WO2017048031A1 - Identification target for scan data matching, and method of acquiring tooth model scan data using same - Google Patents

Abstract

The present invention relates to an identification target for scan data matching, and a method of acquiring tooth model scan data using same and, particularly, to an identification target for scan data matching which is used as a reference when matching scan data measured by an optical scanner and a contact scanner, and to a method of acquiring tooth model scan data which can use the identification target to reduce the time expended for acquiring scan data on a tooth model including accurate scan data on an implant fixture.

Description

Identification target for matching scan data and method of acquiring dental model scan data using the same

The present invention relates to an identification target for matching scan data and a method for acquiring dental model scan data using the same. Specifically, the present invention relates to a method of matching scan data measured by an optical scanner and a contact scanner. The identification target for matching scan data and the tooth model scan data acquisition method which can shorten the time required to acquire the scan data of the tooth model including the scan data of the correct implant fixture using this identification target. It is about.

The implant is a biocompatible implant body (fixture) to the jaw bone that has been enlarged so that it can be sufficiently wrapped through additional surgery, such as bone graft and bone elongation, on the jawbone where the tooth is missing or the tooth is pulled out. It is a dental treatment that restores the function of natural teeth by planting.

The implant undergoes a bone reconstruction of the jawbone around the implant after the oosseintegration of the jawbone where the normal function is maintained and the surface of the implant fixture. There are many kinds of such implants, but recently, intraosseous implants of the screw type are mainly used.

The implant first checks the position of the implant and drills it to create a hole in the jawbone to accommodate the implant fixture and then plant the fixture. When the bone adhesion is satisfactory to the planted fixture, the process of making an artificial dental prosthesis (crown) by connecting the abutment is carried out.

The artificial prosthesis makes an impression on the tooth of the patient where the fixture is implanted, creates a tooth model based on the impression, and then models the prosthesis suitable for the patient's tooth shape based on the scan data obtained by scanning the tooth model. Produced through the process of generating.

At this time, in order to generate a model of the prosthesis suitable for the shape of the patient's teeth, the scan data obtained by scanning the dental model should include accurate scan data (center coordinates and direction information of the screw holes of the fixture).

However, when the scan data of the dental model is acquired using an optical scanner, the scan data can be acquired within a relatively short time. However, the exact fixture is used for the scanned data of the dental model obtained using the optical scanner. There is a problem that no scan data is included.

In order to solve this problem, a method of acquiring the scan data of the tooth model by using a contact scanner may be considered. In this case, the scan data of the tooth model including the scan data of the correct fixture may be obtained. Although possible, there is a problem that it takes a very long time to acquire such scan data. This is because the contact scanner acquires scan data based on the numerical data obtained by tracking the contour of the object with a probe, so it takes much time to acquire the scan data of the entire dental model using the contact scanner. .

Therefore, it is possible to obtain accurate scan data while reducing the time, and the scan data of the entire dental model is obtained by using an optical scanner, and only the portion of the dental model that needs accurate scan data such as the fixture is required. Separately, after acquiring scan data using a contact scanner, a method of matching the two scan data may be considered.

However, for this purpose, an identification target which is a reference for matching scan data of a fixture obtained by using a contact scanner to scan data of a tooth model obtained by using an optical scanner is required.

On the other hand, as a related art in the related art Korean Patent Publication No. 10-2013-0110850 (published date: 2013.10.10) "implant scan abutment" has been disclosed.

The prior art relates to an implant scan abutment capable of securing scan data by optically scanning directly in the oral cavity without making an impression or making a model based on the impression.

However, even when using the implant scan abutment according to the prior art, the accuracy of the scan data obtained through the optical scan is inferior to the accuracy of the scan data obtained through the contact scanner, the prosthesis suitable for the dental environment of the patient There is a limit to manufacturing.

The present invention is to solve the above problems, and provides an identification target for matching scan data as a reference when matching scan data measured by an optical scanner and a contact scanner.

In addition, the present invention provides an identification target for matching scan data, which can shorten the time required to obtain contact scan data through the contact scanner.

In addition, the present invention provides a method for obtaining a dental model scan data that can reduce the time required to acquire the scan data of the dental model including the scan data of the correct implant fixture using the identification target for matching the scan data to provide.

Identification target for scan data matching according to an embodiment of the present invention, the body; An optical scan identification target provided in the body; And a contact scan identification target formed on the body and formed on one side of the optical scan identification target to fix a relative position with the optical scan identification target.

In addition, the scan data matching identification target according to an embodiment of the present invention includes a body and a contact scan identification target having a three-dimensional shape protruding from the upper surface of the body, at least two or more surface data during optical scanning May be coated to produce.

In addition, the scan data acquisition method of the dental model according to an embodiment of the present invention, the implant fixture using a scan data matching identification target fixed relative position of the optical scan identification target and the contact scan identification target (fixture) A method for acquiring dental model scan data for acquiring scan data of a planted tooth model, the method comprising: fixing relative positions of an identification target for matching the scan data and the fixture; Acquiring optical scan data of the dental model including optical scan data of the optical scan identification target using an optical scanner; Acquiring contact scan data of the scan body including contact scan data of the contact scan identification target using a contact scanner while the scan body is coupled to the fixture; And matching the contact scan data of the scan body to the optical scan data of the dental model by matching the contact scan data of the contact scan identification target to a preset relative position based on the optical scan data of the optical scan identification target. It can include;

In addition, the method for obtaining scan data of a dental model according to an embodiment of the present invention includes a body and a contact scan identification target projecting from an upper surface of the body, and at least two or more surface data are generated during optical scanning. In the dental model scan data acquisition method for obtaining the scan data of the implant model implanted (fixture) implanted using the identification target for matching the matched data to be coated so that the scan data matching identification target and the fixture Fixing the relative position of the; Acquiring optical scan data of the dental model including the at least two plane data using an optical scanner; Matching 3D CAD data of the scan data matching identification target previously stored on the basis of the at least two plane data with the optical scan data of the dental model; Acquiring contact scan data of the scan body including contact scan data of the contact scan identification target using a contact scanner while the scan body is coupled to the fixture; And matching the contact scan data of the scan body to the optical scan data of the tooth model by matching the contact scan data of the contact scan identification target with the 3D CAD data matched to the optical scan data of the tooth model. It may include.

According to the scan data matching identification target according to an embodiment of the present invention, it is possible to obtain optical scan data of the entire measured object including contact scan data which is performed only on an important part of the measured object that requires accurate data values. Furthermore, there is an effect that can greatly shorten the time required.

In addition, according to the scan data matching identification target according to an embodiment of the present invention, the contact scan data of the important part of the object to be accurately matched with the optical scan data of the object to be measured without an optical target, so that an optical target in the form of a sticker There is an effect that can prevent the occurrence of errors occurring when attaching.

In addition, according to the scan data matching identification target according to an embodiment of the present invention, in the case of matching the 3D CAD data of the identification target to the optical scan data of the object to be measured, the operator does not need to directly match based on the optical target It is convenient because it can be done automatically.

In addition, according to the method for obtaining dental model scan data according to an embodiment of the present invention, it is possible to greatly shorten the time required to acquire the scan data of the dental model including the scan data of the correct fixture. have.

Effects according to the present invention are not limited to the above-mentioned effects, and other effects not mentioned above will be clearly understood by those skilled in the art from the claims and the detailed description. Could be.

1 is a perspective view of an identification target for matching scan data according to an embodiment of the present invention;

FIG. 2 is a bottom perspective view of the identification target for matching scan data according to FIG. 1;

3 is a view schematically showing optical scan data of an identification target according to FIG. 1 measured by an optical scanner,

4 is a diagram schematically showing contact scan data of an identification target according to FIG. 1 measured by a contact scanner,

FIG. 5 is a diagram schematically illustrating scan data in a state in which contact scan data according to FIG. 4 is matched to optical scan data of an identification target according to FIG. 3;

6 is a view showing a state in which the identification target is coupled to the mounting jig fixed according to the present invention,

7 is a perspective view of an identification target according to another embodiment of the present invention;

8 is a view schematically showing contact scan data of the identification target according to FIG. 7 measured by a contact scanner,

FIG. 9 is a diagram schematically showing optical scan data when optically scanning an identification target according to another embodiment of the present invention;

FIG. 10 is a view illustrating a state in which 3D CAD data of an identification target previously stored in the optical scan data according to FIG. 9 is matched.

11 is a view schematically showing scan data of a dental model implanted with an implant fixture,

12 is a view showing a state in which a mounting jig coupled with an identification target according to the present invention is fixed to a dental model implanted with implant fixtures,

FIG. 13 is a view illustrating a state in which a scan body is coupled to the fixture of FIG. 12.

14 to 16 are views illustrating a method for obtaining dental model scan data according to an embodiment of the present invention.

17 to 19 are views illustrating a method for obtaining dental model scan data according to another embodiment of the present invention.

20 to 23 are views illustrating a method for obtaining dental model scan data according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention;

While the invention allows for various modifications and variations, specific embodiments thereof are illustrated by way of example in the drawings and will be described in detail below. However, it is not intended to be exhaustive or to limit the invention to the precise forms disclosed, but rather the invention includes all modifications, equivalents, and alternatives consistent with the spirit of the invention as defined by the claims.

In this specification, relative terms such as 'top', 'bottom', 'side', etc. may be used to describe the relationship between the components based on the directions shown in the drawings, and the present invention is not limited to such terms. In addition, in the accompanying drawings, the thickness and size may be exaggerated for clarity of the specification, the present invention is not limited by the relative size or thickness shown in the accompanying drawings.

In addition, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

The identification target for matching scan data according to the present invention relates to an identification target which is a reference when matching scan data measured by an optical scanner and a contact scanner.

1 is a perspective view of an identification target for matching scan data according to an embodiment of the present invention, FIG. 2 is a bottom perspective view of the identification target for matching matching data according to FIG. 1, and FIG. 3 is a perspective view of FIG. 1 measured by an optical scanner. FIG. 4 is a diagram schematically showing optical scan data of an identification target, and FIG. 4 is a diagram schematically showing contact scan data of an identification target according to FIG. 1 measured by a contact scanner.

1 to 4, the scan target matching identification target (hereinafter, referred to as an “identification target”) 10 according to an embodiment of the present invention includes a body 20 and a contact scan identification target (hereinafter, “ Contact target) 30, and an optical scan identification target (hereinafter referred to as an “optical target”) 40.

The contact target 30 may be fixed to one side of the optical target 40 so that the relative position with the optical target 40 is fixed. Therefore, the identification target 10 according to an embodiment of the present invention may be preset because the relative position of the contact target 30 and the optical target 40 is fixed. For example, the upper surface 21 of the body 20 may be formed as a flat surface, and the contact target 30 and the optical target 40 may be formed in a state where the relative position is fixed to one side of the upper surface 21, respectively. have.

At least three optical targets 40 may be provided, and each of the optical targets 41, 42, and 43 may have different planar shapes 44, 45, and 46 for identifying one coordinate information during optical scanning. Can have

Therefore, as shown in FIG. 3, when the identification target 10 is optically scanned, at least three or more pieces of coordinate information 47, 48, and 49 may be obtained from the optical target 40. That is, the optical scan data when the identification target 10 is optically scanned according to the present embodiment may include at least three coordinate information 47, 48, and 49.

The contact target 30 may have a three-dimensional shape protruding from the body 20 to enable the contact scan by the probe of the contact scanner, the three-dimensional shape may be in various forms such as sphere, cylinder, The present invention is not limited thereto. However, the minimum number of contact targets 30 and the time required for obtaining the contact scan data values necessary for accurately matching the 3D data may vary depending on the three-dimensional shape of the contact target 30.

For example, the three-dimensional shape of the contact target 30 according to the present embodiment may be a cylinder protruding from the upper surface 21 of the body 20, in this case the minimum contact required to accurately match the three-dimensional data The number of targets 30 may be two.

That is, the contact target 30 according to the present embodiment may be formed of two cylinders 31 and 32 protruding from the upper surface 21 of the body 20 and having upper surfaces 33 and 34, respectively.

Then, as shown in FIG. 4, when contact scanning the contact target 30 according to the present embodiment, the center coordinates 35 and 36 and the directions of the upper surfaces 33 and 34 of the respective cylinders 31 and 32 are measured. (37,38) can be obtained. That is, the contact scan data when the contact target 30 is scanned by the contact according to the present exemplary embodiment may include center coordinates 35 and 36 and directions 37 and 38 of the two upper surfaces 33 and 34. The center coordinates 35 and 36 and the directions 37 and 38 of the upper surfaces 33 and 34 may be the minimum contact scan data values necessary for accurately matching the 3D data.

In addition, using the contact scanner to obtain the data of the center coordinates 35 and the direction 37 of the upper surface 33 from one cylinder 31, the upper surface 33 and the side surface by the probe of the contact scanner Since it can be easily acquired by contacting a few times, it is possible to shorten the time required to obtain contact scan data.

On the other hand, in the case where the three-dimensional shape of the contact target 30 is a sphere, unlike a cylinder, a direction data value cannot be obtained. Therefore, at least three or more contact scan data are required to accurately match three-dimensional data. In this case, the contact scan data obtained from each sphere may be circular surface data on which the sphere is projected or its center coordinate, and in order to obtain such contact scan data, the probe of the contact scanner should contact the sphere. Since the number of times must be larger than that of the cylinder, the time taken for it also increases.

FIG. 5 is a diagram schematically illustrating scan data in a state in which contact scan data according to FIG. 4 is matched to optical scan data of the identification target according to FIG. 3.

As shown in FIG. 5, since the relative position of the contact target 30 and the optical target 40 is fixed and can be preset, the identification target 10 according to the present embodiment is identified using a contact scanner. When matching the contact scan data of the target 10 with the optical scan data of the identification target 10 measured using the optical scanner, the contact scan data 35, 35, 36, 37 of the contact target 30 are matched. Since it is only necessary to match the fixed position relative to the optical scan data 47, 48, and 49 of the optical target 40, the optical scan data of the identification target 10 and the contact scan data can be easily and accurately matched. It becomes possible.

On the other hand, the optical target 40 according to the present embodiment may be formed directly on the top surface 21 of the body 20, such as printing, planar shape (44, 45, 46), attached to the upper surface 21 It may also be in the form of a sticker possible.

In addition, when the optical target 40 is in the form of a sticker that can be attached, a seat made of a shallow groove or the like on the upper surface 21 of the body 20 so as to be attached to a fixed relative position with the preset contact target 30. An addition can be formed.

Then, the optical target 40 in the form of a sticker is attached to the seat portion formed on the upper surface 21 of the body 20, it can be formed at a fixed relative position of the predetermined contact target 30.

Hereinafter, a method of matching optical scan data and contact scan data of an object to be measured using the identification target 10 according to the present embodiment will be described.

First, the identification target 10 is fixed to one side of the object to be measured.

Thereafter, the optical scanner scans the object to be measured and the identification target 10 at the same time. Then, the optical scan data for the object to be measured may include optical scan data of the identification target 10, that is, data of three coordinates 47, 48, and 49 obtained from the optical target 40.

Thereafter, the contact scanner and the contact target 10 are simultaneously scanned by using a contact scanner. In this case, the contact scan on the object to be measured may be performed only on an important part requiring accurate data values, and the contact scan on the identification target 10 may be performed only on the contact target 30.

Then, the contact scan data of the important part of the object to be measured includes the contact scan data of the identification target 10, that is, the coordinates 35 and 36 and the direction 37 of the two upper surfaces 33 and 34 obtained from the contact target 30. 38) may contain data.

Thereafter, the contact scan data 35, 35, 36, 37 of the contact target 30 are matched to a fixed relative position based on the optical scan data 47, 48, 49 of the optical target 40. Then, the contact scan data of the important part of the object under test can be matched to the correct position of the important part of the optical scan data of the object under test.

Therefore, by using the identification target 10 according to the present embodiment, it is possible to obtain optical scan data of the entire measured object including contact scan data which is performed only on an important part of the measured object that requires accurate data values. There is an effect that can greatly shorten the time required.

6 is a view showing a state in which the identification target is coupled to the mounting jig fixed according to the present invention.

As described above, in order to match the optical scan data and the contact scan data of the object to be measured using the identification target 10 according to the present invention, the relative position of the object to be measured and the identification target 10 is fixed. Scanning and contact scanning should be done.

To this end, the identification target 10 according to the present invention may be fixed to the object to be measured, but may be fixed to the mounting jig 11, as shown in FIG.

The mounting jig 11 is configured to be mounted on the optical scanner and the contact scanner while the object to be fixed is fixed. As shown in FIG. 6, when the identification target 10 according to the present invention is coupled to and fixed to the mounting jig 11. In this case, the optical scan and the contact scan can be made in a state where the relative position of the object to be measured and the identification target 10 is fixed.

The mounting jig 11 is provided on the support 12 supporting the object to be measured, the support 13 protruding upward from one side of the support 12, and the support 13 to be movable in the vertical direction. A fixed arm 14 for fixing the object to be supported), and a fixed part 15 for fixing the fixed arm 14 to the support 13 when the fixed arm 14 fixes the object to be measured. Can be.

In addition, the identification target 10 according to the present invention may be fixed to the fixed arm 14 of the mounting jig (11). Referring to Figure 2, the lower portion of the body 20 of the identification target 10 according to an embodiment of the present invention is formed with a fitting groove 22 to be fitted to the fixed arm 14 of the mounting jig 11, the body A fixing hole 23 for fixing the body 20 fitted to the fixing arm 14 of the mounting jig 11 may be formed at the side of the 20.

7 is a perspective view of an identification target according to another embodiment of the present invention, and FIG. 8 is a view schematically showing contact scan data of the identification target according to FIG. 7 measured by a contact scanner.

Since the identification target 10 according to the present embodiment differs only from the configuration of the contact targets 30 and 50 as compared with the identification target 10 according to FIG. 1, detailed descriptions of other configurations other than the contact targets 30 and 50 are provided. The description and reference numerals refer to the detailed description and reference numerals in the above embodiments.

7 and 8, the contact target 50 according to the present exemplary embodiment may be formed in a single cylindrical shape, and the cylindrical 50 may have an upper surface 51 and a cross section 52 formed by cutting a portion thereof. )

Therefore, as shown in FIG. 8, when contact scanning the contact target 50 according to the present embodiment, the center coordinates 54 and the direction 56 and the cross-section 52 of the upper surface 51 of the cylinder 50. The central coordinate 55 and the direction 57 can be obtained.

That is, the contact scan data when the contact target 50 is contact scanned according to the present embodiment includes data of two central coordinates 54 and 55 and directions 56 and 57 of the upper surface 51 and the end surface 52. The scan data may be a minimum contact scan data value necessary for accurately matching three-dimensional data, as in the contact target 30 according to FIG. 1 (see FIG. 4).

FIG. 9 is a diagram schematically showing optical scan data when an identification target is optically scanned according to another embodiment of the present invention, and FIG. 10 is a diagram illustrating 3D CAD data of an identification target previously stored in the optical scan data according to FIG. 9. It is a figure which shows the matched state.

Since the identification target 10 according to the present embodiment differs only in that the identification target 10 is coated in comparison with the identification target 10 according to the above embodiments, detailed descriptions and reference numerals for other components are described in detail. Reference numerals will be used.

The identification target 10 according to the present exemplary embodiment may be coated so that at least two or more plane data 61, 62, 63, and 64 may be generated by diffuse reflection during optical scanning.

Although the coating treatment of the identification target 10 according to the present embodiment may be coated in its entirety, at least one of the upper surface 21 of the body 20 and the surface of the contact target 30 may be coated.

Then, as shown in FIG. 9, surface data may be generated when the identification target 10 according to the present embodiment is optically scanned, and the top surface 33 of the two contact targets 31 and 32 may be generated in the surface data. Two plane data 61 and 62 for the 34 and the plane data 63 and 64 for the upper surface 21 of the body 20 may be included. That is, the optical scan data of the identification target 10 according to the present embodiment may include at least two or more plane data 61, 62, 63, and 64.

For example, in the case where the contact target 30 is composed of two cylinders 31 and 32 (see FIG. 1), the at least two or more surface data are displayed on the top surface 33 of each of the cylinders 31 and 32. 34) data 61 and 62, and when the contact target 30 consists of one cylinder 50 having a cross-section 52 (see FIG. 7), the at least two or more face data It may include data of the upper surface 51 and the cross-section 52 of the cylinder 50. Of course, when the entire body 20 of the identification target 10 is coated, the at least two or more surface data may also include the upper surface 21 data 63 and 64 of the body 20.

The identification target 10 according to the present embodiment may be made of a metal material such as aluminum, and the coating may be performed by anodizing when the identification target 10 is made of aluminum.

As such, when at least two or more pieces of plane data 61, 62, 63, and 64 are generated during the optical scan of the identification target 10, it is possible to match the optical scan data and the contact scan data without a separate optical target 40. Can be.

In detail, the 3D CAD data 70 of the identification target 10 pre-stored based on at least two or more plane data 61, 62, 63, and 64 included in the optical scan data of the identification target 10 is optically displayed. As shown in FIG. 10, the 3D CAD data 70 of the previously stored identification target 10 is matched to the scan data, and thus the upper surface 31 of the contact target 30 may be matched to the scan data. The center coordinates 33 and 34 and the orientations 35 and 36 of 32 may be included.

Then, based on the contact scan data of the contact target 30, that is, the data of the center coordinates 33 and 34 and the directions 35 and 36 of the upper surfaces 31 and 32 (see FIG. 4), the identification target 10 The contact scan data of the object to be measured can be matched to the optical scan data of the object to be matched with the 3D CAD data 70 of.

The identification target 10 according to the present exemplary embodiment having the above configuration is effective when the optical target 40 is configured in the form of a sticker and attached to a seat formed on the upper surface 21 of the body 20.

In detail, when the optical target 40 in the form of a sticker is attached to a seat formed on the upper surface 21 of the body 20, the seat is formed at a position where the relative position with the contact target 30 is fixed. Even if it is, it is difficult to accurately attach the optical target 40 in the form of a sticker, so that the relative position of the contact target 30 and the optical target 40 is an error occurs compared to the preset position 1, when the contact scan data of the contact target 30 is matched to the relative position of the preset optical target 40, an error occurs.

However, as in the present embodiment, the 3D CAD data 70 of the identification target 10 is matched to the optical scan data of the identification target 10 by using the plane data included in the optical scan data of the identification target 10. When the optical scan data of the identification target 10 may include accurate data of the contact target 30, the contact scan data of the contact target 30 obtained through the contact scanner is included in the optical scan data. By matching with the contact target 30, it is possible to accurately match the optical scan data of the identification target (10).

Hereinafter, a method of matching optical scan data and contact scan data of an object to be measured using the scan target matching identification target 10 according to the present embodiment will be described.

First, the identification target 10 is fixed to one side of the object to be measured.

Thereafter, the optical scanner scans the object to be measured and the identification target 10 at the same time. Then, the optical scan data for the object to be measured may include at least two or more plane data 61, 62, 63, and 64 of the identification target 10.

Thereafter, the 3D CAD data 70 of the identification target 10 previously stored based on the at least two or more plane data 61, 62, 63, and 64 is matched to the optical scan data of the object to be measured. Then, in the optical scan data in which the 3D CAD data 70 of the previously stored identification target 10 is matched, the center coordinates 33 and 34 and the direction 35 of the upper surfaces 31 and 32 of the contact target 30 are matched. 36) Data may be included.

Thereafter, the contact scanner and the contact target 10 are simultaneously scanned by using a contact scanner. In this case, the contact scan on the object to be measured may be performed only on an important part requiring accurate data values, and the contact scan on the identification target 10 may be performed only on the contact target 30.

Then, the contact scan data of the important part of the object to be measured includes the contact scan data of the identification target 10, that is, the coordinates 35 and 36 and the direction 37 of the two upper surfaces 33 and 34 obtained from the contact target 30. 38) may contain data.

Thereafter, the contact scan data 35, 35, 36, and 37 of the contact target 30 are matched to the optical scan data, that is, the data of the contact target 30 of the 3D scan data 70, that is, the upper surface of the contact target 30. Match the center coordinates (33, 34) of the (31, 32) and the direction (35, 36) data. Then, the contact scan data of the important part of the object under test can be matched to the correct position of the important part of the optical scan data of the object under test.

Therefore, using the identification target 10 according to the present embodiment, it is possible to accurately match the contact scan data of the important part of the object to the optical scan data of the object to be measured without the optical target 40, so that the optical target in the form of a sticker There is an effect that can prevent the occurrence of errors occurring when attaching (40).

Meanwhile, the optical scan data of the 3D CAD data 70 of the identification target 10 pre-stored based on at least two or more plane data 61, 62, 63, and 64 included in the optical scan data of the identification target 10. Matching to, it is inconvenient for the operator to directly match the face data to the face data on the 3D CAD data 70 of the identification target 10 corresponding thereto. At this time, if the matching operation is automatically made based on the optical target 40, the operator does not need to directly match it is convenient.

To this end, the identification target 10 according to the present embodiment may further include an optical target 40, and thus information about the optical target 40 in the optical scan data and 3D CAD data of the identification target 10 accordingly. May be included.

Then, before matching the at least two or more plane data included in the optical scan data with the plane data on the corresponding 3D CAD data, if the 3D CAD data is matched to the optical scan data based on the optical target 40, As a result, surface data included in the optical scan data and surface data on the 3D CAD data corresponding thereto may be approximately matched.

At this time, the matching of the plane data included in the optical scan data and the plane data on the corresponding 3D CAD data occurs when the optical target 40 in the form of a sticker is attached to the seat of the upper surface 21 of the body 20. As much as the error occurs, this error is not large, so that the matching of the surface data included in the optical scan data and the surface data on the corresponding 3D CAD data can be made automatically.

 That is, the optical target 40 according to the present embodiment has a sticker shape, and due to an error occurring when the optical target 40 is attached to the seat formed on the upper surface 21 of the body 20, the optical scan data and the contact scan data are referred to. Although it is not suitable for matching the 3D CAD data to the optical scan data as described above, it can be an approximate standard, and thus the operator can directly include the plane data (61, 62, 63, 64 included in the optical scan data). ) Does not need to match the plane data on the corresponding 3D CAD data.

Hereinafter, a method of matching optical scan data and contact scan data of an object to be measured using the identification target 10 according to the present embodiment will be described.

First, the identification target 10 is fixed to one side of the object to be measured.

Thereafter, the optical scanner scans the object to be measured and the identification target 10 at the same time. Then, the optical scan data for the object to be measured includes optical scan data of the identification target 10, that is, three coordinates 47, 48, and 49 data obtained from the optical target 40, and at least two plane data ( 61, 62, 63, 64 may be included.

Thereafter, the 3D CAD data of the previously stored identification target 10 is matched to the optical scan data of the object to be measured based on the three coordinates 47, 48, and 49. Then, the at least two or more face data 61, 62, 63, and 64 and the face data on 3D CAD data corresponding thereto may be approximately matched.

The 3D CAD data is then matched to the optical scan data for the object under test so that the surface data on the 3D CAD data is correctly matched to the at least two or more surface data 61, 62, 63, 64. Then, in the optical scan data in which the 3D CAD data of the previously stored identification target 10 is matched, data of the center coordinates 33 and 34 and the directions 35 and 36 of the upper surfaces 31 and 32 of the contact target 30 are included. Can be included.

Thereafter, the contact scanner and the contact target 10 are simultaneously scanned by using a contact scanner. In this case, the contact scan on the object to be measured may be performed only on an important part requiring accurate data values, and the contact scan on the identification target 10 may be performed only on the contact target 30.

Then, the contact scan data of the important part of the object to be measured includes the contact scan data of the identification target 10, that is, the coordinates 35 and 36 and the direction 37 of the two upper surfaces 33 and 34 obtained from the contact target 30. 38) may contain data.

Thereafter, the contact scan data 35, 35, 36, 37 of the contact target 30 are matched with the optical scan data, that is, the data of the contact target 30 of the 3D scan data, that is, the upper surface 31 of the contact target 30. 32 is matched with data of the center coordinates 33 and 34 and the directions 35 and 36. Then, the contact scan data of the important part of the object under test can be matched to the correct position of the important part of the optical scan data of the object under test.

Therefore, when the identification target 10 according to the present embodiment is used, when the 3D CAD data of the identification target 10 is matched to the optical scan data of the object to be measured, the optical target 40 does not need to be directly matched by an operator. It can be done automatically based on).

Hereinafter, various embodiments of a method for obtaining a dental model scan data for acquiring scan data of a dental model implanted with a fixture using the identification target 10 according to the present invention will be described in detail with reference to the accompanying drawings. .

11 is a view schematically showing scan data of a dental model implanted with implant fixtures.

As described above, in order to generate a model of a prosthesis suitable for the shape of the patient's teeth during the implant procedure, the exact fixture (101, 102) is scanned on the scan data obtained by scanning the dental model (100) in which the implant fixture (101, 102) is implanted. Data, that is, the center coordinates 103 and 104 and the orientations 105 and 106 of the screw holes of the fixtures 101 and 102 should be included.

The method for acquiring the dental model scan data according to the present embodiment relates to a method for shortening the time while acquiring the scan data of the correct fixtures 101 and 102 using the identification target 10 according to the present invention. Scan data of the entire model 100 is obtained by using an optical scanner, and scan data of the fixtures 101 and 102 of the dental model 100 is obtained by using a contact scanner, and then the two pieces of scan data are described. It relates to a method for matching based on the identification target 10 according to.

FIG. 12 is a view illustrating a state in which a mounting jig having an identification target coupled thereto is fixed to a tooth model in which an implant fixture is implanted, and FIG. 13 is a view illustrating a state in which a scan body is coupled to the fixture of FIG. 12. to be.

As shown in FIG. 12, the identification target 10 according to the present invention may be fixedly coupled to the mounting jig 11 mounted to the optical scanner and the contact scanner while fixing the dental model 100.

In addition, as shown in FIG. 12, since the fixtures 101 and 102 are implanted in the tooth model 100, it is difficult to directly measure contact scan data of the fixtures 101 and 102 using the contact scanner, and thus FIG. 13. As shown in FIG. 2, scan bodies 110 and 111 may be coupled to the fixtures 101 and 102 to enable contact scanning.

The scan bodies 110 and 111 may be screwed into the screw holes of the fixtures 101 and 102. The scan bodies 110 and 111 screwed in this way are the center coordinates 103 and 104 and the directions 105 and 106 of the screw holes of the fixtures 101 and 102. It may have a substantially cylindrical shape so as to represent.

Then, the center coordinates 103 and 104 and the direction 105 and 106 data of the screw holes of the fixtures 101 and 102 can be measured by measuring the center coordinates and the direction data of the upper surfaces 112 and 113 of the scan bodies 110 and 111 using the contact scanner. Will be.

However, the present invention is not limited to the specific shapes of the scan bodies 110 and 111, and the scan data of the fixtures 101 and 102, that is, the center coordinates 103 and 104 and the direction 105 and 106 data of the screw holes of the fixtures 101 and 102, may be measured. If possible, it may be formed in any shape. For example, the scan bodies 110 and 111 according to the present invention may be abutments.

On the other hand, as shown in FIG. 13, the scan body 110 and 111 are coupled to the fixtures 101 and 102 when the contact scan is performed using the contact scanner, while the optical scan using the optical scanner is shown in FIG. 13. As shown in FIG. 12, the scan bodies 110 and 111 may be coupled to the fixtures 101 and 102, and as shown in FIG. 12, the scan bodies 110 and 111 may not be coupled to the fixtures 101 and 102. The invention is not limited thereto.

Hereinafter, a method of obtaining dental model scan data according to an embodiment of the present invention will be described with reference to FIGS. 14 to 16.

In the method according to the present embodiment, like the identification target 10 according to FIG. 1, the implant fixtures 101 and 102 using the identification target 10 in which the relative position of the contact target 30 and the optical target 40 are fixed. It relates to a method of obtaining the scan data of the implanted tooth model (100).

FIG. 14 is a view schematically showing optical scan data when an optical scan of a tooth model and an identification target is performed using an optical scanner, and FIG. 15 is a contact scan when contact scanning of a tooth model and an identification target is performed using a contact scanner. FIG. 16 is a diagram schematically showing data, and FIG. 16 is a diagram schematically showing scan data in a state in which optical scan data according to FIG. 14 and contact scan data according to FIG. 15 are matched.

First, the method according to the present embodiment fixes the relative positions of the identification target 10 and the fixtures 101 and 102.

The identification target 10 may be fixed relative to the fixtures 101 and 102 by being fixed to one side of the tooth model 100. As shown in FIG. 13, the fixtures 101 and 102 by being coupled to the wood jig 11 are fixed. The relative position with) may be fixed.

Thereafter, the optical model scans the dental model 100 and the identification target 10 simultaneously using an optical scanner.

Then, as shown in FIG. 14, the optical scan data of the dental model 100 may include the optical scan data of the optical target 40. Here, the optical scan data of the optical target 40 may be data of three coordinates 47, 48, and 49 obtained from the optical target 40.

Subsequently, while the scan bodies 110 and 111 are coupled to the fixtures 101 and 102, the tooth model 100 and the identification target 10 are simultaneously scanned by using a contact scanner. In this case, the contact scan for the dental model 100 may be performed only for the scan bodies 110 and 111, and the contact scan for the identification target 10 may be performed only for the contact target 30.

Then, as shown in FIG. 15, the contact scan data of the scan bodies 110 and 111 may include the contact scan data of the contact target 30. Here, the contact scan data of the scan bodies 110 and 111 may be data of the center coordinates 114 and 115 and the directions 116 and 117 of the upper surfaces 112 and 113 of the scan bodies 101 and 111, and the contact scan data of the contact target 30 may be a cylinder 31. 32 may be data of the center coordinates 35 and 36 and the directions 37 and 38 of the upper surfaces 33 and 34.

Thereafter, the contact scan data of the contact target 30 is matched to a predetermined relative position based on the optical scan data of the optical target 40.

Then, as shown in FIG. 16, the contact scan data of the scan bodies 110 and 111 may be matched to the exact positions of the fixtures 101 and 102 of the optical scan data of the dental model 100.

Therefore, according to the method according to the present embodiment, there is an effect that the time required to acquire the scan data of the dental model 100 including the scan data of the correct fixtures 101 and 102 can be greatly shortened.

Hereinafter, a method of obtaining dental model scan data according to another embodiment of the present invention will be described with reference to FIGS. 17 to 19.

In the method according to the present embodiment, like the identification target 10 according to FIG. 9, at least two or more surface data 61, 62, 63, and 64 may be generated during optical scanning. The present invention relates to a method for obtaining scan data of a dental model implanted with a fixture fixture.

FIG. 17 is a view schematically showing optical scan data when an optical scan of a tooth model and an identification target is performed using an optical scanner, and FIG. 18 is an optical image in which 3D CAD data of an identification target is matched based on surface data of the identification target. FIG. 19 is a diagram schematically showing scan data, and FIG. 19 is a diagram schematically showing scan data in a state in which optical scan data according to FIG. 18 and contact scan data according to FIG. 15 are matched.

First, the method according to the present embodiment fixes the relative positions of the identification target 10 and the fixtures 101 and 102.

As in the above embodiment, the identification target 10 may be fixed to one side of the tooth model 100 so that the relative position with the fixtures 101 and 102 may be fixed, as shown in FIG. 13, coupled to the firewood jig 11. By being fixed, the relative position with the fixtures 101 and 102 may be fixed.

Thereafter, the optical model scans the dental model 100 and the identification target 10 simultaneously using an optical scanner.

Then, as shown in Figure 17, the optical scan data for the dental model 100 may include at least two or more plane data (61, 62, 63, 64) of the identification target (10). Here, the two or more face data (61, 62, 63, 64) is the top surface (33, 34) data of the two cylinders (31, 32) and the surface data (63, 64 of the upper surface 21 of the body 20) It may include at least one of).

Thereafter, the 3D CAD data 70 of the previously stored identification target 10 is matched to the optical scan data of the dental model 100 based on the at least two or more plane data 61, 62, 63, and 64.

Then, as shown in FIG. 18, the 3D CAD data 70 may be matched to the exact identification target 10 position of the optical scan data of the dental model 100, and thus the 3D CAD data 70 may be matched. The optical scan data of the tooth model 100, which are matched with each other, may include data about the center coordinates 33 and 34 and the directions 35 and 36 of the upper surfaces 31 and 32 of the contact target 30.

Subsequently, while the scan bodies 110 and 111 are coupled to the fixtures 101 and 102, the tooth model 100 and the identification target 10 are simultaneously scanned by using a contact scanner. In this case, as in the above embodiment, the contact scan for the dental model 100 may be performed only for the scan bodies 110 and 111, and the contact scan for the identification target 10 may be performed only for the contact target 30.

Then, as shown in FIG. 15, the contact scan data of the scan bodies 110 and 111 may include the contact scan data of the contact target 30. Here, the contact scan data of the scan bodies 110 and 111 may be data of the center coordinates 114 and 115 and the directions 116 and 117 of the upper surfaces 112 and 113 of the scan bodies 101 and 111, and the contact scan data of the contact target 30 may be a cylinder 31. 32 may be data of the center coordinates 35 and 36 and the directions 37 and 38 of the upper surfaces 33 and 34.

Thereafter, the contact scan data of the contact target 30 is matched to the 3D CAD data 70 matched to the optical scan data of the dental model 100.

Then, as shown in FIG. 19, the contact scan data of the scan bodies 110 and 111 may be matched to the exact positions of the fixtures 101 and 102 of the optical scan data of the dental model 100.

Therefore, according to the method according to the present embodiment, the scan data of the dental model 100 including the scan data of the correct fixtures 101 and 102 can be obtained without the optical target 40, so that the optical target 40 in the form of a sticker is obtained. ), There is an effect that can prevent the occurrence of errors occurring.

Hereinafter, a method of obtaining dental model scan data according to another embodiment of the present invention will be described with reference to FIGS. 20 to 23.

The method according to the present embodiment may further include an optical target 40 attached to the seat of the upper surface 21 of the jersey body 20 in the form of a sticker, compared to the method according to FIGS. 17 to 19. There is a difference in using (10).

FIG. 20 is a view schematically showing optical scan data when an optical scan of a tooth model and an identification target is performed using an optical scanner, and FIG. 21 is an optical image in which 3D CAD data of an identification target is matched based on surface data of the identification target. FIG. 22 is a diagram schematically showing scan data, and FIG. 22 is a diagram schematically showing scan data in a state in which optical scan data according to FIG. 21 and contact scan data according to FIG. 15 are matched.

First, the method according to the present embodiment fixes the relative positions of the identification target 10 and the fixtures 101 and 102.

As in the above embodiments, the identification target 10 may be fixed to one side of the tooth model 100 so that the relative position with the fixtures 101 and 102 may be fixed, as shown in FIG. 13, coupled to the wood jig 11. By being fixed, the relative position with the fixtures 101 and 102 may be fixed.

Thereafter, the optical model scans the dental model 100 and the identification target 10 simultaneously using an optical scanner.

Then, as shown in FIG. 20, the optical scan data for the tooth model 100 includes optical scan data of the optical target 40 and at least two or more surface data 61, 62, 63, of the identification target 10. 64). Here, the optical scan data of the optical target 40 may be three coordinates (47, 48, 49) data obtained from the optical target 40, the two or more surface data (61, 62, 63, 64) May include at least one of upper surface 33 and 34 data of the two cylinders 31 and 32 and surface data 63 and 64 of the upper surface 21 of the body 20.

Thereafter, the 3D CAD data 71 of the identification target 10 previously stored based on the optical target 40 is matched to the optical scan data of the dental model 100.

Then, as shown in FIG. 21, the 3D CAD data 71 may be matched to an approximate position of the identification target 10 of the optical scan data of the dental model 100. Here, the position error of the 3D CAD data 71 may occur due to an error occurring when the optical target 40 in the form of a sticker is attached to the seat portion of the upper surface 21 of the body 20.

Thereafter, the 3D CAD data 71 is realigned with the optical scan data of the dental model 100 based on the at least two or more plane data 61, 62, 63, and 64.

Then, as shown in FIG. 22, the 3D CAD data 71 may be matched to the exact identification target 10 position of the optical scan data of the dental model 100, and thus the 3D CAD data 71. The optical scan data of the tooth model 100, which are matched with each other, may include data about the center coordinates 33 and 34 and the directions 35 and 36 of the upper surfaces 31 and 32 of the contact target 30.

Subsequently, while the scan bodies 110 and 111 are coupled to the fixtures 101 and 102, the tooth model 100 and the identification target 10 are simultaneously scanned by using a contact scanner. In this case, as in the above embodiments, the contact scan for the dental model 100 may be performed only for the scan bodies 110 and 111, and the contact scan for the identification target 10 may be performed only for the contact target 30.

Then, as shown in FIG. 15, the contact scan data of the scan bodies 110 and 111 may include the contact scan data of the contact target 30. Here, the contact scan data of the scan bodies 110 and 111 may be data of the center coordinates 114 and 115 and the directions 116 and 117 of the upper surfaces 112 and 113 of the scan bodies 101 and 111, and the contact scan data of the contact target 30 may be a cylinder 31. 32 may be data of the center coordinates 35 and 36 and the directions 37 and 38 of the upper surfaces 33 and 34.

Thereafter, the contact scan data of the contact target 30 is matched to the 3D CAD data 71 matched to the optical scan data of the dental model 100.

Then, as shown in FIG. 23, the contact scan data of the scan bodies 110 and 111 may be matched to the exact positions of the fixtures 101 and 102 of the optical scan data of the dental model 100.

Therefore, according to the method according to the present embodiment, in the case of matching the 3D CAD data 71 of the identification target 10 to the optical scan data of the dental model 100, the operator does not need to directly match the optical target 40 It can be done automatically based on).

As described above, the present invention includes an identification target for matching scan data as a reference when matching scan data measured by an optical scanner and a contact scanner, and scan data of an accurate implant fixture using the identification target. The present invention relates to a method for acquiring dental model scan data that can shorten the time required to acquire the scan data of the dental model, and the embodiment of the present invention may be modified in various forms. Therefore, the present invention is not limited to the embodiments disclosed in the present specification, and all forms changeable by those skilled in the art to which the present invention pertains will belong to the scope of the present invention.

Claims (20)

In the identification target for matching scan data as a reference when matching scan data measured by an optical scanner and a contact scanner, The identification target includes a body, an optical scan identification target provided in the body, and a contact scan identification target formed on one side of the optical scan identification target to be fixed to a relative position with the optical scan identification target. Identification target for matching scan data, characterized in that. The optical scan identification target of claim 1, wherein at least three optical scan identification targets are provided, wherein each optical scan identification target has a planar shape for identifying one coordinate information, and the contact scan identification target protrudes from the body. Identification target for scan data matching, characterized in that it has a three-dimensional shape. The identification target of claim 2, wherein two contact scan identification targets are formed, and each contact scan target has a cylindrical shape. The identification target of claim 2, wherein the contact scan identification target is formed in one cylindrical shape and has a cross section formed by cutting a portion of the cylindrical shape. The scan data of claim 2, wherein each of the optical scan identification targets has a sticker shape in which the planar shape is formed, and the body has a seat portion for attaching the optical scan identification target in the sticker shape. Identification target for matching. The identification target of claim 1, wherein the identification target for matching the scan data is fixed to a mounting jig mounted to the optical scanner and the contact scanner while the measurement target is fixed. According to claim 6, The optical scan identification target and the contact scan identification target is provided on the upper surface of the body, the lower portion of the body is formed with a fitting groove to be fitted to the mounting jig, the side of the body is mounted Identification target for matching the scan data, characterized in that the fixing hole for fixing the body fitted to the jig is formed. In the identification target for matching scan data as a reference when matching scan data measured by an optical scanner and a contact scanner, The identification target includes a body and a contact scan identification target having a three-dimensional shape protruding from the upper surface of the body, The identification target is an identification target for matching scan data, characterized in that the coating process so that at least two or more surface data can be generated during optical scanning. 10. The method of claim 8, wherein two contact scan identification targets are formed, each of the contact scan targets having a cylindrical shape, and the at least two or more surface data includes upper surface data of the respective cylinders. Identification target for matching scan data. The method of claim 8, wherein the contact scan identification target is formed in one cylindrical shape, the cylinder has a cross section formed by cutting a portion, the at least two or more surface data includes the top surface data and the cross-sectional data of the cylinder Identification target for scan data matching, characterized in that. 10. The method of claim 8, wherein the identification target for matching the scan data further comprises an optical scan identification target provided on the upper surface of the body, the optical scan identification target is provided with at least three or more each of the optical scan identification target The identification target for matching the scan data, characterized in that formed in the form of a sticker having a plane shape for identifying one coordinate information, the upper surface of the body is formed with a seat for attaching the optical scan identification target in the form of a sticker. The identification target of claim 8, wherein the identification target for matching the scan data is fixedly coupled to a mounting jig mounted to the optical scanner and the contact scanner while the measurement target is fixed. The scan data of claim 12, wherein a fitting groove is formed at a lower portion of the body to be fitted to the mounting jig, and a fixing hole for fixing the body fitted to the mounting jig is formed at a side of the body. Identification target for matching. In the tooth model scan data acquisition method of acquiring scan data of a dental model implanted with a fixture fixture using an identification target for matching scan data having a fixed relative position between an optical scan identification target and a contact scan identification target, Fixing a relative position between the scan data matching identification target and the fixture; Acquiring optical scan data of the dental model including optical scan data of the optical scan identification target using an optical scanner; Acquiring contact scan data of the scan body including contact scan data of the contact scan identification target using a contact scanner while the scan body is coupled to the fixture; And Matching the contact scan data of the scan body to the optical scan data of the dental model by matching the contact scan data of the contact scan identification target to a predetermined relative position based on the optical scan data of the optical scan identification target; Dental model scan data acquisition method comprising a. 15. The dental model scan data of claim 14, wherein the fixing step is performed by coupling the scan data matching identification target to a mounting jig mounted to the optical scanner and the contact scanner while fixing the dental model. Acquisition method. 15. The method of claim 14, wherein the scan body has a cylindrical shape, and the contact scan data of the scan body is center coordinate data and direction data of the upper surface of the cylindrical body. Implant fixture using a scan data matching identification target including a body and a contact scan identification target protruding from the upper surface of the body, and coated at least two plane data can be generated during optical scanning In the tooth model scan data acquisition method for acquiring scan data of the implanted tooth model, Fixing a relative position between the scan data matching identification target and the fixture; Acquiring optical scan data of the dental model including the at least two plane data using an optical scanner; Matching 3D CAD data of the scan data matching identification target previously stored on the basis of the at least two plane data with the optical scan data of the dental model; Acquiring contact scan data of the scan body including contact scan data of the contact scan identification target using a contact scanner while the scan body is coupled to the fixture; And Matching the contact scan data of the scan body to the optical scan data of the tooth model by matching the contact scan data of the contact scan identification target with the 3D CAD data matched to the optical scan data of the tooth model; Dental model scan data acquisition method, characterized in that. 18. The method of claim 17, wherein the identification target for matching the scan data further comprises an optical scan identification target provided on the upper surface of the body, The optical scan data acquiring step of the tooth model may include acquiring the optical scan data of the tooth model including the at least two or more plane data and the optical scan data of the optical scan identification target using an optical scanner, The optical scan data matching step of the tooth model may include matching 3D CAD data of the scan target matching identification target with the optical scan data of the tooth model based on the optical scan identification target, and the at least two And realigning the 3D CAD data with the optical scan data of the dental model based on the plane data. The dental model scan data of claim 18, wherein the fixing step is performed by coupling the scan data matching identification target to a mounting jig mounted to the optical scanner and the contact scanner while fixing the dental model. Acquisition method. 19. The method of claim 18, wherein the scan body has a cylindrical shape, and the contact scan data of the scan body is center coordinate data and direction data of the upper surface of the cylindrical body.

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