JP2008284269A - Method for manufacturing implant plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an implant plate manufacturing method for raising correctness and safety in an implant. <P>SOLUTION: The method includes: a step of obtaining oral cavity scanning video data generated by tomographic scanning; a step of copying an oral cavity shape on the basis of a substantial model, scanning the substantial model, and obtaining data of an oral cavity model; a step of defining the oral cavity scanning video data as a reference object and defining the oral cavity model data as a localization object so as to individually select at least one coincident feature from the two objects, and subsequently localizing the oral cavity model data to the oral cavity scanning video data; a step of performing grading calculation with respect to the oral cavity model data, obtaining a distance amount enlarging outward, forming a digital model, and then, forming a working route by CAM processing, thereby manufacturing a digital working model; and a step of working and manufacturing the implant plate, on the basis of the digital working model through the use of a tool machine. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to implant technology, and more particularly to a method for manufacturing an implant plate.

  In the well-known implant method, a general dentist makes a pre-surgery schedule, collects tomographic scans and medical records of the patient as reference data, and provides them to the specialist. The actual 3D model is made on the basis of the scanning diagram, and then the position and depth of the implant and the situation that interferes with nerves and nasal fins are determined. When computed tomographic scan data is processed, it becomes a 2D view. This 2D diagram is difficult to judge accurately without some experience.

In the surgical process, an artificial tooth root is planted by punching a hole in the alveolar bone of the patient with a special instrument. Whether or not the position, depth, and force of striking the hole can be grasped depends on the experience of the doctor, and therefore the risk during surgery cannot be avoided.
From the above, it has been found that the safety and accuracy of implant surgery must rely on a dentist who has both expertise and considerable experience.
As a result of continuous experimentation and trial production in order to solve the above problems, the present inventor completed the present invention.

The main object of the present invention is to provide a method for producing an implant plate which makes it possible to increase the accuracy and safety of the implant.
Another object of the present invention is to provide a method of manufacturing an implant plate that makes it possible to further refine the implant and reduce the risk of surgery by making the implant plate according to the patient's condition. .

  In order to achieve the above object, the method of manufacturing an implant plate according to the present invention includes the following steps. Step (a) The acquisition of the oral scanning video data is to take the oral scanning video data generated by the tomographic scanning. Step (b) The acquisition of the oral model data is to duplicate the oral shape based on the solid model, and to scan the solid model to obtain the oral model data. Step (c) The localization is the above-mentioned oral scanning video data as a reference property, the aforementioned oral model data as the localization property, and at least one matching feature is selected separately from the two properties, and then the oral model data is It is to be localized in the scanned video data. Step (d) Digital processing model is created by performing grading operation on the oral model data, taking the distance to expand outward, forming the digital model, then setting the processing path by CAM processing, and molding the digital processing model It is to be. Step (e) The processing and manufacturing of the implant plate is to process and manufacture the implant plate based on a digital processing model using a tool machine.

Hereinafter, the structure and characteristics of embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 7, a method for manufacturing an implant plate according to an embodiment of the present invention includes the following steps.
Step (a) is acquisition of oral cavity scanning video data. Oral scanning image data 11 (see FIG. 3) generated by the tomographic scan is displayed on a monitor, and a arch curve is pulled along the alveolar bone contour in the image, and a cutting layer is formed on the normal direction and the cut line direction of the curve. To generate an auxiliary figure of the cross section of the tooth and jaws, and to create an auxiliary 2D figure and 3D model. Next, avoid the nerve or nose of the human body based on the oral scanning video data 11, set the direction of the artificial tooth root, then adjust the artificial tooth root to an appropriate position, and then create the oral scanning video data 11 in a file At the same time, the data such as the position coordinates of the artificial tooth root, the direction of the central axis, the CT (computed tomography) 3D model, and the artificial tooth root model are output as a basis for subsequent implant plate processing.

Step (b) is acquisition of oral cavity model data. The above CT3D model and artificial tooth root model are read, the oral shape is duplicated based on the actual model, and the actual model is scanned to obtain (or read) the oral model data 21 (see FIG. 4).
Step (c) is localization. The aforementioned oral scanning video data 11 is a reference property, the aforementioned oral model data 21 is a localization property, and at least one of the oral scanning image data 11 (that is, the reference property) and the oral model data 21 (ie, the localization property). Two matching features 12, 22 are selected separately. For example, by locating the features 12 and 22 of the oral scanning image data 11 (that is, the reference property) and the oral model data 21 (that is, the localization property) with respect to an arbitrary tooth or an alveolar bone region, the oral model data 21 is obtained. Localization is performed on the oral scanning video data 11 (see FIG. 5 for the state), and auxiliary 2D diagrams and 3D models are generated.

  Step (d) is preparation of a digital processing model. As shown in FIG. 6, a grading operation is performed on the oral model data 21, and a digital model 26, that is, an outer model of an implant plate, is generated by taking a distance amount that expands outward. By matching the artificial tooth root 28 scheduled to stand (perform a Boolean operation), the correspondence between the artificial tooth root 28 and the digital model 26 is found. Subsequently, as shown in FIG. 7, the CAD model of the portion 261 of the implant plate to be manufactured is selected. Finally, a machining path is established by CAM processing, and a digital machining model corresponding to the portion 261 of the implant plate is generated.

Step (e) is the fabrication of the implant plate. If the implant plate 29 is processed and manufactured based on the digital processing model using a tool machine, the manufacture of the implant plate is completed.
The above-described steps make it possible to easily produce an implant plate according to the patient's condition, so that a doctor can perform an implant operation based on the implant plate.

Summarizing the above, the advantages of this embodiment are as follows.
First, it is possible to improve the accuracy and safety of the implant. In this example, it is possible to produce an implant plate with extremely high accuracy by computerized production steps, contrast between tomographic scan data and actual tooth type, and grading technology, so accuracy and safety are greatly improved. improves.

Second, it is possible to reduce the risk of surgery. In this embodiment, the implant plate is manufactured according to the condition of the patient. Therefore, the doctor can perform the implant operation while trusting the implant plate manufactured according to the present embodiment. That is, the doctor can overcome the technical difficulties in the operation according to the present embodiment and reduce the risk of the operation.
The steps posted by this example are merely illustrative and cannot limit the scope of the present invention. And the scope of the present invention should be based on the claims. Further, changes and diversions should be within the scope of the present invention without departing from the spirit of the present invention.

It is a schematic diagram which shows the step (flow) of the manufacturing method of the implant plate by one Example of this invention. It is a schematic diagram which shows the detailed process of the manufacturing method of the implant plate by one Example of this invention. It is a schematic diagram which shows the oral-scanning image data in operation of the manufacturing method of the implant plate by one Example of this invention. It is a schematic diagram which shows the oral model data in operation of the manufacturing method of the implant plate by one Example of this invention. It is a schematic diagram which shows the state which orient | assigned the oral model data in the operation of the manufacturing method of the implant plate by one Example of this invention to the oral scan image data. It is a schematic diagram which shows the grading state with respect to the oral model data in operation of the manufacturing method of the implant plate by one Example of this invention. It is a schematic diagram which shows the state which produces an implant plate based on the specific grading site | part in operation of the manufacturing method of the implant plate by one Example of this invention.

Explanation of symbols

  11: Oral operation image data, 12: Feature, 21: Oral model data, 22: Feature, 26: Digital model, 261: Implant plate part, 28: Artificial root, 29: Implant plate

Claims (5)

An oral scanning video data acquisition step (a) for taking oral scanning video data generated by tomographic scanning;
Step of obtaining oral model data (b) by copying the oral shape based on the real model, scanning the real model, and taking oral model data;
Using the oral scanning video data as a reference property and the oral model data as a localization property, separately selecting at least one matching feature from the reference property and the localization property, followed by localization of the features of the reference property and the localization property A localization step (c) for localizing the oral model data into the oral scanning video data by performing
A digital machining model is created by performing a grading operation on the oral model data and generating a digital model by taking a distance amount to be expanded outward, and then setting a machining path by CAM processing to create a digital machining model ( d) and
Implant plate processing / manufacturing step (e) in which a tool machine is used to process and manufacture an implant plate based on a digital processing model;
The manufacturing method of the implant plate characterized by including.   The method for producing an implant plate according to claim 1, wherein in step (a), the direction of the artificial tooth root is calculated based on the oral scanning image data, and the artificial tooth root is adjusted to an appropriate position.   The method for producing an implant plate according to claim 2, wherein, in the step (a), when calculating the direction of the artificial tooth root, a portion of a human nerve or a nasal fin is avoided.   2. The method of manufacturing an implant plate according to claim 1, wherein in step (a), the oral scan image data is created and output as a file, and at the same time, data such as the position coordinates of the artificial tooth root and the central axis direction are output.   In step (d), the digital model and the artificial tooth root are matched to find a corresponding relationship between the artificial tooth root and the digital tooth model, a machining path is established by CAM processing, and finally a digital machining model is produced. The manufacturing method of the implant plate of Claim 1.

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