KR20100090564A - Abutment for implant and method for manufacturing the same - Google Patents

Abstract

PURPOSE: A dental implant abutment and a manufacturing method thereof are provided to improve the optical scan efficiency of the CAD/CAM exclusive abutment, to simplify the manufacturing process and to improve the performance. CONSTITUTION: A method of manufacturing a dental implant abutment includes: a step(S100) of preparing a CAD/CAM exclusive abutment combined to the top of a customized abutment; a step(S200) of doing the diffused reflection surface treatment on the outer surface of the CAD/CAM exclusive abutment; a step(S300) of obtaining figure data via the optical scanning of the CAD/CAM exclusive abutment which has gone through the diffused reflection surface treatment; a step(S400) of forming an adhesive passage hole coping with the obtained figure data inside the customized abutment via the CAD/CAM process; and a step(S500) that a joint protrusion of the CAD/CAM exclusive abutment is inserted into and bonded to the adhesive passage hole formed in the customized abutment.

Description

Abutment for implant and method for manufacturing the same

The present invention relates to an implant abutment, and more particularly, to manufacture an implant abutment to induce efficiency and process simplicity during the scanning process of a CAD / CAM dedicated abutment to which a custom abutment is seated to produce a customized prosthesis using a CAD / CAM It is about a method.

In general, an implant may be used as a concept representing a dental procedure or in the same sense as a fixture, in which an artificial root fixture is implanted and adhered to an alveolar bone where natural teeth are lost, and a prosthsis to the fixture. Refers to the combination formed).

In addition, the implant is divided into a fixture made of titanium that is largely fixed to the alveolar bone and an artificial tooth instead of the natural tooth. The fixture and the artificial tooth are connected by an abutment and an abutment screw. do. That is, the abutment is fixed by the abutment screw on the fixture, and an artificial tooth having a coping and an appearance is coupled to the abutment.

Here, the abutment is provided with a combination of two abutment of the upper and lower sides of different materials, the lower abutment is a portion of the upper portion of the projection is bonded by titanium / CAD for the convenience of CAD / CAM for convenience It is defined as the abutment, the upper abutment means a prosthesis made of ceramic material, and since the internal structure formed by the CAD / CAM system is bonded and bonded closely to the protrusion of the lower abutment, it is defined as a customized abutment for convenience. In other words, for the customized prosthesis of artificial teeth using CAD / CAM, a dedicated abutment for the prosthesis and a CAD / CAM abutment for connecting the fixture are required.

In detail, the outer circumferential surface of the CAD / CAM exclusive abutment for prosthetic fabrication using CAD / CAM equipment is first scanned by optical scanning method to obtain 3D scan shape data, and the inner surface of the abutment precisely customized according to the acquired data is precisely determined. Process under a CAD / CAM system. In this way, the upper portion of the CAD / CAM exclusive abutment is bonded to the inner side of the customized abutment so that it is accurately bonded.

However, the general conventional CAD / CAM dedicated column is made of titanium metal, so the scanning operation is not smooth due to the specular reflection of light during the optical scan, thus preventing the specular reflection of the light from the light source (or specular reflection). In order to induce diffuse reflection (or deflected reflection), there is a problem in that a coating material is applied to the outer surface of the CAD / CAM exclusive column before the light scanning operation.

Therefore, the application of such a coating material has to be applied, which leads to a problem in that work efficiency is lowered and the process is complicated. Furthermore, when optical scanning is performed with uneven coating, the three-dimensional scan data may be incorrect.

As such, the addition of a complicated and inefficient process due to the use of the coating material has a problem that increases the unit cost of the product.

The present invention is to solve the problem of providing a method of manufacturing abutment for implants to improve the light scan efficiency and to simplify the process and improve the product performance of the abutment for the custom abutment to produce a customized prosthesis using CAD / CAM It is a task.

The present invention comprises the steps of preparing a CAD / CAM dedicated abutment provided with a coupling protrusion coupled to the customized abutment on the top to solve the above problems; Performing diffuse reflection surface treatment on the outer surface of the CAD / CAM exclusive rent column; Optically scanning the diffuse reflection surface-treated CAD / CAM abutment to obtain shape data; Forming an adhesive passage hole inside the customized rent column according to the obtained shape data through a CAD / CAM process; And inserting and bonding the coupling protrusion of the CAD / CAM abutment to the adhesive passage hole formed in the custom abutment.

Here, the step of the diffuse reflection surface treatment is preferably made comprising a step of sintering and sintering titanium powder on the outer surface of the CAD / CAM dedicated abutment.

In addition, the step of the diffuse reflection surface treatment is preferably made to include an acid corrosion treatment of the outer surface of the CAD / CAM dedicated abutment.

And, the step of the diffuse reflection surface treatment is preferably made to include a roughening process through the blasting process using a blasting material on the outer surface of the CAD / CAM dedicated abutment.

Further, the preparing of the CAD / CAM dedicated abutment is preferably formed on one side along the circumferential direction of the coupling projection to form a guide fixing portion for guiding the coupling direction of the custom abutment.

On the other hand, the present invention is coupled to the upper side of the fixture, is provided with a coupling protrusion coupled to the customized abutment on the top, CAD / CAM dedicated abutment with an outer surface irregular reflection surface treatment; It includes a custom abutment formed with an adhesive passage hole through the CAD / CAM process according to the shape data obtained by light scanning the outer surface of the CAD / CAM dedicated abutment surface of the diffuse reflection surface, the adhesive passage hole formed in the custom abutment Provides abutments for implants that are combined and bonded with abutments for CAD / CAM abutments.

The present invention provides the following effects through the problem solving means described above.

First, since it is not necessary to separately apply the diffuser coating material by applying the diffused surface treatment on the outer surface of the CAD / CAM dedicated column for the optical scan, it is possible to improve the accuracy of the shape data obtained through the scan and later apply the coating material. By eliminating complicated processes such as removing the back, the operation efficiency and process efficiency can be improved and the economic efficiency can be improved.

Secondly, the diffuse reflection surface treated portion has improved adhesion to the bonding material of the surface to insert the combined projection of the CAD / CAM dedicated abutment in the adhesive abutment hole formed according to the shape data obtained through the optical scan And it provides an additional effect that can significantly improve the binding performance during bonding.

Third, the characteristics of the alveolar bone structure are extended by variously reflecting the surface of the diffuse reflection surface considering the functional absorption according to the position of maxillary / mandible, the characteristics of the boundary area of the gum and alveolar bone, and the coupling state of the fixture. The surface condition of the CAD / CAM dedicated abutment can be achieved in one process.

Fourth, the guide fixing part is provided on one side of the scanning area of the CAD / CAM dedicated abutment so that the combined position of the customized abutment and the CAD / CAM dedicated abutment is aligned, the customized abutment in the intended direction according to the dental structure of the subject Easily seated, eliminating the additional process of selecting the abutment orientation of the abutments and leading to accurate prosthetic work.

Hereinafter, with reference to the accompanying drawings will be described in detail the implant abutment in accordance with a preferred embodiment of the present invention.

Here, the implant abutment refers to an abutment for connecting a prosthesis such as a fixture and an artificial tooth used in an implant procedure, wherein the abutment is a customized abutment which is a prosthesis and the CAD / CAM exclusive abutment. A state is combined.

That is, the implant is provided with an abutment connecting the fixture and the artificial tooth in order to have an artificial tooth on the upper side of the fixture implanted in the alveolar bone, wherein the abutment is formed inside the inner side of the fixture. An artificial tooth including a coping and an exterior is provided on an upper side of the abutment by being screwed with an abutment screw to an engagement hole communicating with a coupling groove and fixed to the fixture.

At this time, the abutment is used by bonding the divided by the upper / lower abutment according to the material difference between the fixture and the artificial tooth, the CAD / CAM dedicated abutment of titanium material is used on the lower side, the CAD / CAM dedicated abutment on the upper side Attention A custom abutment of ceramic material is used which has an internal structure which is correspondingly formed by scanning the adhesive site with a CAD / CAM system.

In addition, according to the present invention, as the abutment is divided into an external connection method and an internal connection method according to the connection method with the fixture, the CAD / CAM dedicated rent holder may have two structures. Because it is applied, it can be applied to both external connection and internal connection.

1 is a schematic view showing the structure of an implant to which the implant abutment according to an embodiment of the present invention, Figure 2 is a perspective view of a CAD / CAM dedicated abutment applied to an embodiment of the present invention.

As shown in Figure 1, the implant abutment according to an embodiment of the present invention comprises a CAD / CAM dedicated abutment 100, a custom abutment (10).

Here, the CAD / CAM dedicated abutment 100 has a hollow on the inside as a whole, and comprises a connecting portion 110, the coupling protrusion 120 and the guide fixing portion 130.

In detail, the connection unit 110 is provided to be coupled to the upper side of the fixture 15. To this end, the connecting portion 110 includes a fixture connecting portion 111, a fixture contact portion 112, a gingiva contact portion 113 and a margin portion 114, the connection portion 110 is a fixture 15 The fixture connection part 111 and the fixture contact part 112 are selectively included according to the difference between the external connection method and the internal connection method according to the connection method. The difference between the internal connection method and the external connection method is depending on the presence or absence of a portion inserted into the lower fixture (15).

Here, the fixture connection portion 111 is used when inserted into and coupled to the fixture 15, and the fixture contact portion 112 refers to a portion that is contacted when inserted into the fixture 15. The gingiva contact portion 113 corresponds to an upper portion of the connection portion 110, and the fixture 15 is fixed to the jaw bone B in a shape in contact with the gingiva (gum, G) and supported by the alveolar bone (B). In addition, the margin part 114 is seated on the bottom edge of the customized abutment 10 to be described later as an upper surface of the upper edge portion of the connecting portion 110.

Thus, as shown in Figure 1, the fixture 15 is bonded to the alveolar bone (B), the implant connecting the artificial tooth consisting of the fixture 15, the inner tube (coping, 13) and the appearance (not shown) Since the abutment 10 and 100 are inserted or contacted on the upper side of the fixture 15 and joined by an abutment abutment screw (not shown), an implant which can be used semi-permanently is performed.

On the other hand, the upper side of the connecting portion 110 is provided with a coupling protrusion 120 is extended, the coupling protrusion 120 is CAD / inside the customized zone note 10 is seated on the bottom portion of the margin 114. It is inserted into and coupled to the adhesive passage hole 10a formed by the CAM. Here, the coupling protrusion 120 is preferably formed integrally with the connecting portion 110, and is manufactured by precision processing because it has a small size of titanium material, the manufacturing method is not limited.

2, the outer surface of the CAD / CAM dedicated abutment 100 is a diffuse reflection surface treatment. At this time, it is preferable that the hatched-marked portion of the coupling protrusion 120 which is important for obtaining accurate shape data as a part of the CAD / CAM dedicated abutment 100 that is combined with the customized abutment 10 is preferably surface-reflected. Through this, it is possible to prevent the scanned shape data from being inaccurate due to the specular reflection caused by the reflection of light from the light source when the outer surface of the CAD / CAM exclusive abutment 100 is scanned.

That is, as described below, the outer surface of the CAD / CAM dedicated column 100 is diffusely reflected from the light source so that accurate shape data can be obtained during a scan operation.

3A to 3C are schematic diagrams showing an example of diffuse reflection surface treatment according to a modification of the embodiment of the present invention. In each of the drawings, the hatched portions are the parts with diffuse reflection surface treatment.

3a to 3c, in addition to the coupling protrusion 120 in consideration of the functional aspect according to the coupling state of the fixture, the consideration of bone absorption according to the position of the maxillary / mandible, the boundary region of the gum and alveolar bone The diffuse reflection surface treatment area may extend to 113, the fixture contact portion 112, and the fixture connection portion 111.

On the other hand, Figures 4a and 4b is a schematic diagram according to the case where the implant abutment according to another embodiment of the present invention is applied to the external connection method of the fixture connection method.

4A and 4B, even in the case of external connection method CAD / CAM considering the functional aspect according to the position of the maxillary / mandible, consideration of bone resorption according to the characteristics of the boundary region of the gum and alveolar bone, the coupling state of the fixture In addition to the engaging protrusion 220 of the dedicated abutment 200, the diffuse reflection surface treatment region may extend to the gingiva contact portion 213.

In this way, the adhesive passage hole 10a through the CAD / CAM process on the lower inner side of the customized abutment 10 according to the shape data obtained by light scanning the outer surface of the diffuse reflection surface treated CAD / CAM dedicated abutment (100,200) To form. Therefore, the shape of the adhesive passage hole (10a) is formed to correspond to the outer shape of the coupling projections (120,220), the entrance hole (not shown) through the above-mentioned abutment screw through the upper center portion of the adhesive passage hole (10a) Is formed.

Here, the CAD / CAM process refers to a machining operation through a computer aided design / computer aided manufacturing system, and processes a shape through control by a computer program according to the shape data obtained by scanning an image with a 3D camera. Say the way.

In this way, the CAD / CAM dedicated abutment (100,200) of the present invention by using a CAD / CAM equipment, the 3D shape through the scan (data) data to the custom abutment (10) and custom inner tube (coping, 13), etc. This is the part of the abutment for implants that is used to make customized prostheses for each individual.

After the manufacturing of the parts is completed, the coupling protrusions 120 and 220 are inserted and bonded to the adhesive passage hole 10a formed in the customized abutment 10 to form an implant abutment. That is, the abutment for implant is a custom abutment of ceramic material to facilitate the processing of artificial teeth to fit the CAD / CAM dedicated abutment (100,200) of titanium material and the dental structure of the human body to be firmly coupled to the fixture (15) (10) It is provided by bonding.

On the other hand, as shown in Figures 1 and 2, when manufacturing the CAD / CAM dedicated abutment 100, it is preferable that the guide fixing part 130 is formed on one side of the circumferential direction of the coupling protrusion 120. Through this, the adhesive passage hole 10a of the customized abutment 10 formed according to the shape data obtained by optically scanning the CAD / CAM exclusive abutment 100 is also formed in a shape to be joined to the guide fixing part 130. Therefore, the circumferential coupling position can be accurately guided when bonding and bonding between the CAD / CAM dedicated abutment 100 and the custom abutment 10 during the operation or operation.

Here, the guide fixing part 130 is not limited to a shape in which one side of the circumferential direction is cut as shown, and may be formed in one side protruding shape.

As such, the guide fixing part 130 is formed integrally with the CAD / CAM abutment 100 as a first step, so that a separate processing step is omitted, thereby greatly improving the convenience of handling and simplifying the process. Corresponding molding through scan is precisely formed in the adhesive passage through CAD / CAM process, which improves work efficiency with quick and accurate guides, and can significantly improve the reliability of the procedure by preventing and simplifying side effects of the procedure. .

On the other hand, Figure 5 is a flow chart showing a method of manufacturing abutment for implants according to an embodiment of the present invention.

Referring to Figures 1 to 5, it will be described in detail the manufacturing method of the abutment for implants according to an embodiment of the present invention.

First, the CAD / CAM dedicated abutment 100 is coupled to the upper side of the fixture 15 through the connecting portion 110, the coupling projection 120 is coupled to the customized abutment 10 on the top ( S100). At this time, it is preferable to form a guide fixing part 130 for guiding the coupling direction of the customized rent column on one side along the circumferential direction of the coupling protrusion 120.

Thereafter, a diffuse reflection surface treatment is performed on the outer surface of the CAD / CAM exclusive abutment 100 so that light from a light source is diffusely reflected instead of specularly reflected (S200). Through this, it is possible to improve the reliability and accuracy of the shape data obtained during the optical scan without using a separate diffused coating material.

Here, the step of the diffuse reflection surface treatment includes the step of sintering the titanium powder to the outer surface of the CAD / CAM dedicated abutment 100 by high temperature sintering, or acid corrosion treatment of the outer surface of the CAD / CAM dedicated abutment 100 It may be made, including the step.

Furthermore, the step of surface treatment of the diffuse reflection may include a step of roughening the outer surface of the CAD / CAM dedicated abutment 100 through a blasting process using a blasting material such as Al ₂ O ₃ to TiO ₂ . .

Of course, other surface treatment methods may be added to induce diffuse reflection (or deffused reflection) on the surface of the CAD / CAM dedicated abutment (100).

Next, light scanning the outer surface of the diffuse reflection surface-treated CAD / CAM dedicated column 100 to obtain the shape data accurately and quickly (S300). In addition, according to the obtained shape data, the adhesive passage hole 10a is formed inside the customized abutment 10 through a CAD / CAM process (S400), and the adhesive passage hole 10a formed in the customized abutment 10 is formed. By inserting and bonding the engaging protrusion 120 of the CAD / CAM dedicated abutment 100 can be completed for the preparation of the implant abutment.

Through this, it is not necessary to separately apply a diffused coating material to the outer surface of the CAD / CAM dedicated abutment 100 for the optical scan, it is possible to improve the accuracy of the shape data obtained through the scan. In addition, the part of the diffuse reflection surface treatment is improved adhesion to the bonding material of the surface, the coupling performance when inserting and bonding the coupling protrusion 120 of the CAD / CAM dedicated abutment 100 in the adhesive passage hole (10a) May be significantly improved.

Furthermore, the area where the diffuse reflection surface is treated is extended according to the characteristics of the alveolar bone by extending the maxillary / mandibular position, considering the bone absorption according to the characteristics of the boundary region of the gum and alveolar bone, and considering the functional aspects according to the coupling state of the fixture. CAD / CAM dedicated abutment 100 surface state can be achieved in one process.

Meanwhile, in one embodiment of the present invention, the abutment surface is described as an example of diffuse reflection surface treatment, but the abutment may be substituted or modified as an impression coping according to the type of implant. As long as the technical spirit of the present invention is applied, it will be said to belong to the scope of the present invention.

As described above, the implant abutment according to the preferred embodiment of the present invention is not limited to each of the above-described embodiments, and the general knowledge in the art to which the present invention belongs without departing from the scope of the claims of the present invention. It is possible to be modified by the exciter, and such a modification is within the scope of the present invention.

1 is a schematic view showing the structure of an implant to which the implant abutment according to an embodiment of the present invention is applied.

Figure 2 is a perspective view showing a CAD / CAM dedicated abutment applied to an embodiment of the present invention.

Figure 3a is a schematic diagram showing a modification of the diffuse reflection surface treatment of CAD / CAM dedicated rent according to an embodiment of the present invention.

Figure 3b is a schematic diagram showing another modification of the surface treatment of diffuse reflection of CAD / CAM dedicated rent according to an embodiment of the present invention.

Figure 3c is a schematic diagram showing another modification of the surface treatment of diffuse reflection of CAD / CAM dedicated abutment according to an embodiment of the present invention.

Figure 4a is a schematic diagram showing a modification of the diffuse reflection surface treatment of CAD / CAM dedicated abutment according to another embodiment of the present invention.

4B is a schematic view showing another modification of diffuse reflection surface treatment of CAD / CAM exclusive rent according to another embodiment of the present invention.

Figure 5 is a flow chart showing a method of manufacturing abutment for implants according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: customized abutment 10a: adhesive passage

13: coping 15: fixture

G: gum B: alveolar bone

100,200: CAD / CAM only 110: Connection

111: fixture connection 112: fixture contact

113: gingival contact 114: margin

120, 220: engaging projection

130: Guide

Claims (6)

Preparing a CAD / CAM dedicated abutment provided with a coupling protrusion coupled to the custom abutment on the upper; Performing diffuse reflection surface treatment on the outer surface of the CAD / CAM exclusive rent column; Optically scanning the diffuse reflection surface-treated CAD / CAM abutment to obtain shape data; Forming an adhesive passage hole inside the customized rent column according to the obtained shape data through a CAD / CAM process; And And inserting and bonding the engaging projection of the CAD / CAM exclusive abutment into the adhesive passage hole formed in the customized abutment. The method of claim 1, The step of surface treatment of the diffuse reflection is a method of manufacturing abutment for implants, characterized in that comprises the step of sintering the titanium powder on the outer surface of the CAD / CAM dedicated abutment by hot sintering. The method of claim 1, The step of surface treatment of the diffuse reflection is a manufacturing method of abutment for implants, characterized in that it comprises the step of acid corrosion treatment of the outer surface of the CAD / CAM dedicated rent column. The method of claim 1, The surface treatment of the diffuse reflection surface manufacturing method of the implant for abutment characterized in that it comprises the step of roughening the outer surface of the CAD / CAM dedicated abutment through a blasting process using a blasting material. The method of claim 1, Preparing the CAD / CAM dedicated abutment is formed on one side along the circumferential direction of the coupling projection portion to form a guide fixing portion for guiding the coupling direction of the customized abutment zone Attention Manufacturing Method. Is coupled to the upper side of the fixture, provided with a coupling protrusion coupled to the customized abutment on the top, CAD / CAM dedicated abutment with an external surface diffuse reflection; It includes a custom abutment formed by the adhesive passage hole through the CAD / CAM process in accordance with the shape data obtained by light scanning the outer surface of the CAD / CAM dedicated abutment surface of the diffuse reflection, Implant abutment formed by inserting and bonding the joining projection of the CAD / CAM dedicated abutment in the adhesive passage hole formed in the custom abutment.

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