WO2014185664A1 - Assist device for removing impression coping and impression coping removing device including assist device - Google Patents

Abstract

The present invention relates to an impression coping for a dental implant and, more specifically, to an assist device for attaching and removing an impression coping, which has a structure for facilitating attachment and removal of the impression coping essentially used in an impression taking process.

Description

Impression coping removal aid and impression coping removal device comprising said aid

The present invention relates to an impression coping for dental implants, and more particularly, to an impression coping removal aid having a structure for facilitating the removal of an impression coping, which is essentially used in an impression acquisition process, and an impression coping including the auxiliary device. It relates to a removal device.

An implant is a screw-shaped titanium root, or fixture, that is implanted in the alveolar bone, and when the bone is fused and hardened around the implanted fixture, the abutment is attached to it. In recent years, implants have become a global trend in dental restorations as a method of creating artificial prostheses.

In this implant procedure, it is most important to make and place the prosthesis precisely according to the tooth shape of the subject, so for this purpose, the accurate tooth model is made by floating the tooth shape of the subject as an impression material and the most accurate prosthesis is made with the tooth model. Because it is actually performed.

As such, impression coping is used in the process of obtaining impressions in order to produce the same working model as the oral cavity and tooth structure of the patient, and a brief description will be made of the impression acquisition process using a known impression coping. 1A-1D show the process of taking impressions and creating a working model using conventional impression copings 3. Referring to FIG. 1A, a conventional impression coping 3 is positioned as shown in FIG. 1C on top of a fixture 4 embedded in an alveolar bone in place of the natural root of a missing tooth 21 and guide pin 1. Is bound to the fixture. Subsequently, both copings 3 are bound with the resin 5 so as not to move during the impression acquisition process. This process is called the splinting process. Since the resin hardens from the liquid phase to the solid phase, it shrinks during the hardening process and affects the position of both copings. Thus, the splicing process cuts the resin between both copings. In addition, the liquid resin is injected therein to reduce the shrinkage, thereby preventing the coping position change. Then, when the splinting process is completed, the impression material (not shown) is then applied to the patient's teeth 2, and cured for a period of time, then the guide pin 1 is removed, and the impression material is removed from the patient's teeth. . At this time, the impression coping 3 is removed from the tooth mold embedded in the impression material. Subsequently, insert the lap analog into the impression coping (3) embedded in the impression material, tighten the guide pins again, pour the plaster to solidify the gypsum, remove the guide pins, and separate the work model from the impression material. You are done.

As shown in FIG. 1C, the known impression coping 3 includes a head part 31, a body part 33 provided in the head part 31, and a fastening hole 37 penetrating the head part and the body part from the top to the bottom. ). The head part 31 is formed in a symmetrical shape around the fastening hole 37 in a circular shape, and the body part 33 has one end of the extension pipe 331 and the extension pipe 331 extending downward from the head part 31. It includes a lower tube 335 is expanded in the lower side. In addition, the fastening hole 37 extends from the upper end of the head portion to the lower end of the lower tube and includes an insertion hole 371 which is reduced in diameter through a stepped portion at a lower position of the lower tube and extends downward. The insertion hole 371 is defined by the inner surface of the polygon as a hole into which the polygon head portion of the fixture or lap analog is inserted. And, the guide pin (1) has a rod shape extending in the longitudinal direction and has a screw portion (11) that is reduced in diameter through a stepped end to the lower end, and is used to fasten or remove the guide pin (1) at the top A groove into which a driver or the like shown in FIG. 1E is fitted is formed.

Therefore, when the impression coping 3 is seated in the fixture embedded in the alveolar bone, the insertion hole 371 of the impression coping 3 is inserted into the polygonal head portion of the fixture (or lap analog), and then the guide pin 1 is It is inserted into the fastening hole 37 of the impression coping 3, and the stepped end of the guide pin 1 and the stepped end of the fastening hole 37 are mutually caught, and the threaded portion 11 of the guide pin is fastened to the fixture (or lap analog). By screwing into a ball (not shown), the impression coping 3 is fixed on the fixture (or lap analog).

Thereafter, a fluid impression material is applied to the patient's teeth, and when the impression material is cured, the fixed impression coping (3) must be separated from the patient's tooth (2) together with the hardened impression material. Pin (1) must be released. In this case, a known dental driver such as FIG. 1E is used to loosen the guide pin 1.

As shown in FIG. 1E, a known dental driver needs to secure a length that a doctor can hold and apply a force, so when the guide pin fixing the impression coping fixed to the patient's mouth, in particular, the molar part, needs to be removed. There was a problem that not only the patient undergoing the procedure but also the doctor performing the procedure is not very easy.

Accordingly, there has been a need for development of an impression coping removal device that solves this problem.

As a result of research efforts to solve the above problems, the present inventors completed the present invention by developing a new structure of the auxiliary device that can remove the impression coping without using a conventional dental driver.

Accordingly, an object of the present invention is to shorten the overall length of the implant as well as to minimize the discomfort of the patient at the time of implantation as well as to provide the necessary force to apply sufficient rotational force required to remove the impression coping as well as to ensure the convenience of the doctor procedure It is to provide a new structure for eliminating impression coping.

Another object of the present invention, unlike the conventional dental screwdriver used in the patient's mouth during implant surgery by separately comprising an auxiliary device for removing the removal of the implant coping inserted into the patient's mouth and a rotation device that can apply a force to the auxiliary device It is to provide an impression coping removal device that can minimize the discomfort of the patient at the time of the implant procedure as well as to ensure the convenience of the doctor procedure by shortening the entire length of the impression coping removal device inserted into the implant.

It is still another object of the present invention to provide an impression coping removal device that can replace a dental screwdriver that removes the impression coping by using an existing tool such as an assist device having a very simple structure and a forceps that are always in hospital.

The object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object of the present invention, the present invention provides an insertion member inserted into an insertion groove formed so that the impression coping removal device is inserted into the upper guide pin or the impression coping upper portion exposed after the impression material is cured; A first shaft member extending from the insertion member; A second shaft member spaced apart from the first shaft member; And a connecting member connecting the first shaft member and the second shaft member. It provides an auxiliary device for removing the impression coping comprising a.

In a preferred embodiment, it further comprises a ring member that is rotatably fitted to the second shaft member.

In a preferred embodiment, the connecting member connects the upper end of the first shaft member and the lower end of the second shaft member.

In a preferred embodiment, it further comprises an escape preventing member extending from the upper end of the second shaft member to prevent the ring member from escaping from the second shaft member.

In a preferred embodiment, the separation preventing member is formed of a length member formed in a predetermined length in the direction of the first shaft member, the length member is formed such that its end has a length that is located coaxially with the first shaft member do.

In a preferred embodiment, the separation preventing member is composed of a length member formed in a predetermined length in the direction of the first shaft member and a spherical member formed at the end of the length member, the spherical member is coaxial with the first shaft member. Is located in.

In a preferred embodiment, the inner diameter of the ring member has a diameter spaced apart from the surface of the second shaft member by less than 3mm in the state fitted around the second shaft member.

In a preferred embodiment, the ring member is further provided with a locking groove for catching the ring member on the outer surface.

In a preferred embodiment, the magnitude of the force transmitted to the insertion groove formed to insert the impression coping removal device through the auxiliary device is proportional to the length of the connecting member.

The present invention also provides an auxiliary apparatus for removing any of the above impression copings; And

It provides an impression coping removal device including a rotation device for holding the second shaft member or the ring member of the impression coping removal auxiliary device to rotate the auxiliary device.

In a preferred embodiment, the pivoting device is forceps.

In a preferred embodiment, the rotation device is mounted to the end is a ring-shaped member that can wrap the second shaft member in a spaced apart state.

The present invention has the following excellent effects.

First, according to the impression coping removal aid of the present invention is a structure that can apply the force required to apply sufficient rotational force required to remove the impression coping while the overall length is shortened to minimize the inconvenience of the patient during the implant procedure The doctor can secure the convenience of the procedure.

In addition, according to the impression coping removal device of the present invention, unlike the conventional dental screwdriver used in the implant by removing the auxiliary coping device inserted into the patient's mouth and the rotation device that can apply the force to hold the auxiliary device By shortening the entire length of the impression coping removal device inserted into the patient's mouth during the procedure, the discomfort of the patient can be minimized and the convenience of the doctor can be secured.

In addition, the impression coping removal device of the present invention can replace the dental screwdriver to remove the impression coping by using the existing tools such as the auxiliary device of the very simple structure and the forceps in the hospital.

FIG. 1A is a perspective view showing a state of use of a known impression coping, FIG. 1B is a perspective view of an impression coping and a guide pin shown in FIG. 1A, and FIG. 1C is a plan view of a known impression coping fixed on a fixture. FIG. 1D is a side view of a splinting process for a known impression coping fixed on a fixture, and FIG. 1E is a perspective view of a known dental driver used to remove the impression material shown in FIG. 1D.

2 is a schematic diagram of an apparatus for removing an impression coping according to an embodiment of the present invention.

3 is a schematic diagram of an apparatus for removing an impression coping according to another embodiment of the present invention.

4A-4C are schematic diagrams of an auxiliary coping removal aid in accordance with another embodiment of the present invention.

5 is a schematic diagram of an impression coping removal apparatus according to another embodiment of the present invention.

The terms used in the present invention were selected as general terms as widely used as possible, but in some cases, the terms arbitrarily selected by the applicant are included. In this case, the meanings described or used in the detailed description of the present invention are considered, rather than simply the names of the terms. The meaning should be grasped.

Hereinafter, with reference to the accompanying drawings and preferred embodiments will be described in detail the technical configuration of the present invention.

However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Like reference numerals used to describe the present invention throughout the specification denote like elements.

Technical features of the present invention is a structure that can apply sufficient force to give the rotational force required to remove the impression coping, and unlike the conventional dental driver used as a short-length impression coping removal aid and impression coping removal device Impression coping removal aid inserted into the patient's mouth and the rotation device that can be applied to hold the assist device is configured separately.

That is, the known dental driver conventionally used to remove the impression coping is a structure that operates in line with the impression coping.

Furthermore, the known dental driver is inserted into a groove formed in the upper portion of the guide pin to remove the impression coping, and a force transmission part capable of transmitting the rotational force required to release the guide pin and the surgeon may apply the force to the force transmission part. The structure can be distinguished by a handle part, which can be applied to the impression coping only when the force transmission part has a sufficient length, and the handle part also needs to have a length sufficient to transmit a force through the force transmission part. This is because the known dental driver is naturally expected to have a structural problem that is too long compared to the patient's mouth size.

Accordingly, a first technical feature of the present invention resides in an aid for eliminating impression coping, which is shorter than the length of the force transmitting part of the known dental driver, but which has a simple structure while sufficiently applying the required rotational force to eliminate the impression coping.

In addition, the second technical feature of the present invention is the force transmission portion and the handle portion constituting a known dental driver formed in a straight line to solve the problem of operating in a straight line with the impression coping impression coping corresponding to the impression coping By separating and configuring the removal device and the rotating device corresponding to the handle portion of the known dental driver separately, it is possible to apply the force to the device in a direction perpendicular to the direction of the force applied to the impression coping. The technical feature is to minimize the required length to be inserted into the patient's mouth when the impression coping is removed so that it does not work.

2-4 are schematic diagrams of an auxiliary coping removal aid according to embodiments of the present invention.

As shown in FIG. 2, the auxiliary coping removal apparatus 100 according to an embodiment of the present invention includes an insertion member 110, a first shaft member 120, a connection member 130, and a second shaft member. 140.

First, the insertion member 110 constitutes the lower end of the impression coping removal aid 100 of the present invention, the insertion formed to insert the impression coping removal device is inserted into the upper guide pin or the impression coping upper exposed after the impression material is cured. This part is inserted into the groove.

Therefore, the size and shape of the insertion member is inserted into the insertion groove, it is not limited as long as the auxiliary device does not escape from the insertion groove during the rotation, but if possible, it may be of a size and shape that fits in the insertion groove without being loose. The length of the insertion member 110 is also not limited so long as it can be inserted into the insertion groove to apply a rotational force to the guide pin, but may be formed to be the same or longer than the depth of the insertion groove.

In addition, the first shaft member 120 is formed in a straight line with the insertion member 110 may be formed integrally with the insertion member 110. The shape of the first shaft member 120 is not limited as long as it is in the form of a shaft, but the length thereof does not come into contact with the hardened impression material when the auxiliary device 100 rotates while the insertion member 110 is inserted into the insertion groove. The length of is required. Therefore, when the insertion member 110 is formed long, the first shaft member 120 may be formed short.

In addition, the second shaft member 140 is formed so as not to be coaxially spaced apart from the first shaft member 120, it may be preferably formed parallel to the first shaft member 120. The shape of the second shaft member 140 is also not limited as long as it is in the form of a shaft, but the length is preferably formed to a length suitable for the rotation device used to rotate the auxiliary device 100.

The connecting member 130 is formed to connect the first shaft member 120 and the second shaft member 140, the connecting member 130 connects the first shaft member 120 and the second shaft member 140. The shape, length and the connection angle are not limited, but may be connected to be perpendicular to the first shaft member 120 and the second shaft member 140. In particular, the connection member 130 may be formed to form a shaft shape for the force transmission and to connect the upper end of the first shaft member 120 and the lower end of the second shaft member 140.

As shown in FIG. 2, the auxiliary device 100 of the present invention is known in the art through a structure that connects the first shaft member 120 and the second shaft member 140 to the connection member 130. Compared to a force transmission structure using one axis, such as a dental driver, it is possible to transmit a force equal to or greater than a force transmitted by one axis structure while reducing the overall length.

If the magnitude of the force transmitted to remove the impression coping through the two-axis structure of the present invention configured as described above is a long length of the connection member 130 connecting the first shaft member 120 and the second shaft member 140 As it gets bigger and shorter it becomes smaller.

Therefore, although the auxiliary device 100 of the present invention can lengthen the connecting member 130 to shorten the overall length, if the connecting member 130 is too long, the space required for the auxiliary device 100 to rotate is provided to the patient. The length of the connection member 130 may be determined in consideration of the total length of the auxiliary device 100 and the rotational space on the premise that it may be too extended in comparison with the mouth size.

Next, the auxiliary coping removal apparatus 100 according to another embodiment of the present invention may further include a ring member 150 in addition to the configuration of FIG. 2 as shown in FIG. 3.

That is, the auxiliary device 100 shown in FIG. 3 differs only in that it further includes a ring member 150 having the same configuration as the auxiliary device shown in FIG. 2 and rotatably fitted to the second shaft member 140. Therefore, only the ring member 150 will be described.

The ring member 150 is a rotational device to remove the impression coping using the auxiliary device shown in FIG. Rotating the auxiliary device 100 can transmit the force required to remove the impression coping, but not only requires a larger force to rotate the auxiliary device 100, but also to solve the problem that the auxiliary device 100 is not easily rotated. This is because the component is introduced for.

The ring member 150 is not limited in shape and length as long as the ring member 150 is rotatably fitted to the second shaft member 140, but at least a length that the rotation device for rotating the auxiliary device 100 can hold and operate. It may be desirable to secure and shorter than the length of the second shaft member 140.

The inner diameter of the ring member 150 should be secured to a diameter capable of securing a distance freely rotatable in a state in which it is fitted to the second shaft member 140, and to rotate the second shaft member 140 to the maximum. There will be no limitation as long as the diameter is within the range. However, in consideration of the rotational efficiency of the auxiliary device 100, the diameter of the ring member 150 spaced apart from the surface of the second shaft member 140 by 3 mm or less in a state where the inner diameter of the ring member 150 is fitted around the second shaft member 140. For example, the spacing may be in the range 0.2mm to 3mm. Considering the size of the auxiliary device 100 and the mouth space of the patient, 1.5mm to 2mm may be preferable.

As a result, when the auxiliary device 100 of the structure in which the ring member 150 is pivotally fitted to the second shaft member 140 is used to remove the impression coping, as shown in FIG. 3, the general forceps does not have a special structure as the rotation device. Even if the second shaft member 140 and the forceps do not directly contact, the friction force is significantly reduced, so that less power required to rotate the auxiliary device 100, as well as the auxiliary device 100 can be easily and stably rotated It can be seen that.

Next, the auxiliary coping removal apparatus 100 according to another embodiment of the present invention may further include a departure preventing member 160 in addition to the configuration of FIG. 3 as shown in FIGS. 4A to 4C. . That is, since the separation preventing member 160 is a component that prevents the ring member 150 fitted into the second shaft member 140 from being pulled out.

As shown in FIGS. 4A to 4C, the separation preventing member 160 extends from an upper end of the second shaft member 140 to prevent the ring member 150 from escaping from the second shaft member 140. Since it is a component, it may be formed in a spherical shape on the upper end of the second shaft member 140 as shown in Figure 4a, but if the departure prevention member 160 is formed in the structure shown in Figures 4b and 4c auxiliary device ( 100) can be rotated more stably.

That is, FIG. 4B shows only the length member 161 having the separation preventing member 160 formed in a predetermined length in the direction of the first shaft member 120, and the length member 161 has an end thereof at the end of the first shaft member 120. And the separation preventing member 160 illustrated in FIG. 4C having a length coaxially with the length member 161 and the length member 161 formed in a predetermined length in the direction of the first shaft member 120. It consists of a spherical member 162 formed at the end, because the spherical member 162 is formed to be coaxial with the first shaft member 120.

As such, when the end of the separation preventing member 160 is positioned coaxially with the first shaft member 120, the doctor assists the insertion groove to remove the impression coping in the configuration of the auxiliary device 100 having the two-axis structure. When inserting the insertion member 110 of the (100), when rotating the auxiliary device 100 with the rotation device, the finger tip of the other hand not holding the rotation device is located on the coaxial line with the first shaft member 120 Just by supporting the end of the member 160, the auxiliary device 100 can be rotated more stably without shaking. In particular, if the end is composed of a spherical member 162 as shown in Figure 4c the effect can be further increased.

5 is a schematic diagram of an impression coping removal apparatus according to another embodiment of the present invention.

Looking at an example of the impression removing device of the present invention with reference to Figure 5, the impression removing device of the present invention may include any one of the above-described impression coping removal aid for the impression coping removal shown in FIG. It can be seen that the configuration including a rotating device 200 for holding the second shaft member or the ring member of the auxiliary device 100 and the impression coping removal auxiliary device to rotate the auxiliary device.

At this time, when the auxiliary device 100 includes the ring member 150 as shown in FIGS. 3 and 4A to 4C, the auxiliary device includes a forceps having various structures such as a straight line or a curved line. As long as the doctor can hold and turn the ring member, it may have any structure. However, when the auxiliary device 100 does not include the ring member 150 as shown in FIG. 2, the rotation device 200 may serve as the ring member 150 of the auxiliary device 100. That is, the structure that is capable of wrapping the second shaft member 140 in a spaced apart state is mounted on the distal end portion may improve the convenience of use of the impression coping removal apparatus when the surgeon performs the procedure.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various changes and modifications will be possible.

Claims (12)

An insertion member inserted into an insertion groove formed to insert an impression coping remover into an upper guide pin or an impression coping upper portion exposed after the impression material is cured; A first shaft member extending from the insertion member; A second shaft member spaced apart from the first shaft member; And A connection member connecting the first shaft member and the second shaft member; Impression coping removal aid comprising a. The method of claim 1, And a ring member rotatably fitted to the second shaft member. The method of claim 1, And the connecting member connects an upper end of the first shaft member to a lower end of the second shaft member. The method of claim 2, And an escape preventing member extending from an upper end of the second shaft member to prevent the ring member from escaping from the second shaft member. The method of claim 4, wherein The release preventing member is formed of a length member formed in a predetermined length in the direction of the first shaft member, the length member is formed so that the end portion has a length that is located coaxially with the first shaft member Coping removal aid. The method of claim 4, wherein The release preventing member is composed of a length member formed in a predetermined length in the direction of the first shaft member and a spherical member formed at the end of the length member, the spherical member is located on the coaxial line with the first shaft member. Aid for eliminating impression coping. The method of claim 2, And the inner diameter of the ring member has a diameter spaced apart from the surface of the second shaft member by 3 mm or less in a state of being fitted around the second shaft member. The method of claim 2, The ring member is an auxiliary coping removal apparatus, characterized in that the engaging groove for holding the ring member is further formed on the outer surface. The method of claim 1, And an amount of force transmitted to the insertion groove formed to insert the impression coping removing device through the auxiliary device is proportional to the length of the connection member. 10. An auxiliary apparatus for removing an impression coping according to any one of claims 1 to 9; And And a pivoting device for holding the second shaft member or ring member of the impression coping removal aid and rotating the assist device. The method of claim 10, And said rotatable device is a forceps. The method of claim 10, The rotation device is an impression coping removal device characterized in that the ring-shaped member that can be wrapped in the spaced apart state the second shaft member is mounted at the end.

Images