KR101056357B1 - Impression Coping for Implant Procedures - Google Patents

Abstract

Impression Coping for Implant Procedures is disclosed. Impression coping for implant surgery of the present invention, the first body is formed with at least one groove along the circumference of the outer peripheral surface; A second body extending downward from the first body and having a plurality of inlet grooves disposed radially with respect to the center; And a third body extending downward from the second body. According to the present invention, it is possible to minimize the axial flow and the rotational flow of the impression coping in the impression material during the impression taking to achieve accurate impression acquisition, as well as to perform the pickup function of the impression coping stably.

Implants, Impression Coping, Impressions, Impression Materials

Description

IMPRESSION COPING FOR IMPLANT OPERATION}

The present invention relates to impression coping for implant procedures, and more particularly, to the structure of the impression coping for minimizing the axial flow and rotational flow of the impression coping in the impression material during the impression taking.

Implant surgery is a replacement procedure that recovers when the tissues of the human body are lost. In the dentistry, implantation of artificial roots, or tooth roots, is used. It is a cutting-edge procedure that restores the function of teeth by fixing artificial teeth after planting artificial tooth made of titanium (Titanium), which has no rejection on the human body, to replace the lost tooth roots. In the case of general prosthetics or dentures, the surrounding teeth and bones may be damaged over time, but the implants do not damage the surrounding dental tissues, and they have the same function or shape as natural teeth, but do not cause tooth decay. have.

In this implant procedure, it is most important to make the prosthesis according to the tooth shape of the subject and place it exactly where the lost tooth was. For this purpose, the impression acquisition process of producing the correct working model by floating the tooth shape of the subject as an impression material And to produce a prosthesis that fits the shape of the patient's teeth based on the work model.

In general, the impression acquisition is performed by binding impression copings directly or by using a guide pin to a fixture placed in the alveolar bone, applying a fluid impression material to the teeth of the subject, and when the impression material is hardened, remove the impression material from the teeth of the subject. This is achieved through a series of processes in which plaster is poured into the impression material to produce a working model. In this case, the impression coping is classified into a transfer type and a pick-up type. The impression coping of the pickup method is an impression coping separated from the teeth of the subject together with the impression material while being embedded in a hardened impression material. The transfer-type impression coping refers to an impression coping that remains bound to the fixture when the hardened impression material is separated from the subject's teeth.

On the other hand, in order to obtain an ideal impression, the impression coping should not be moved or rotated up and down in the impression material.In reality, axial flow may occur in the process of removing the impression material from the teeth of the subject, and the fixture or the lap analog Rotational flow may occur in the course of tightening or releasing the guide pin to engage or disengage the impression coping.

As such, when axial flow and / or rotational flow of the impression coping occurs in the impression material, accurate impression acquisition becomes difficult and thus prosthesis treatment based on the impression acquisition fails.

Therefore, in order to improve the accuracy of the impression taking to determine the success of the prosthesis treatment, the development of the impression coping having a structure capable of minimizing the axial flow and rotational flow of the impression coping in the impression material is urgently required.

An object of the present invention is to minimize the axial flow and rotational flow of the impression coping in the impression material at the time of impression acquisition to achieve accurate impression acquisition, as well as the implant procedure capable of stably performing the pickup function of the impression coping To provide impression coping.

The object is, according to the invention, at least one groove is formed along the circumference of the outer peripheral surface; A second body extending downward from the first body and having a plurality of inlet grooves disposed radially with respect to a center thereof; And a third body extending downwardly from the second body.

Here, the groove may be provided as a helix groove formed to be inclined obliquely on the outer circumferential surface of the first body.

The at least one groove may be a plurality of grooves arranged at intervals along the longitudinal direction of the first body.

The second body may include the plurality of outer surfaces defining the plurality of inlet grooves together with the lower surface of the first body and the upper surface of the third body, and the plurality of outer surfaces may be arranged in a polygonal structure. .

The second body may further include a plurality of connection surfaces connecting the two outer surfaces adjacent to each other on the plurality of outer surfaces.

The third body may include a plurality of bite protrusions disposed at intervals along the circumferential direction to protrude on the outer circumferential surface, or a plurality of bite grooves disposed at intervals on the outer circumferential surface along the circumferential direction.

The plurality of connection surfaces may be disposed in substantially the same position in the circumferential direction with the plurality of biting protrusions or the plurality of biting grooves.

The plurality of connection surfaces may be provided in the same number as the plurality of biting protrusions or the plurality of biting grooves.

The connection surface may extend from the outer peripheral surface of the lower end of the first body to the outer peripheral surface of the upper end of the third body.

The outer surface may form a plane, and the connection surface may have a curved surface.

The third body may have a tapered shape in which the outer diameter decreases toward the lower side.

The plurality of inlet grooves may include a first inlet groove, a second inlet groove, and a third inlet groove, wherein the second body defines a first outer surface defining the first inlet groove and the second inlet groove. And a third outer surface defining a second outer surface and the third inlet groove, wherein the first outer surface, the second outer surface and the third outer surface may be disposed in a triangular structure.

The second body may include a first connecting surface connecting the first outer surface and the second outer surface, a second connecting surface connecting the second outer surface and the third outer surface, and the third outer surface; It may further include a third connecting surface for connecting the first outer surface.

The third body has a tapered shape in which the outer diameter decreases toward the lower side, and the first bite protrusion, the second bite protrusion, and the third bite protrusion are disposed to be spaced apart from each other along the circumferential direction to protrude on the outer peripheral surface. The first connection surface, the second connection surface and the third connection surface may be disposed to correspond to the first bite protrusion, the second bite protrusion and the third bite protrusion, respectively.

The present invention provides an impression coping for implant surgery comprising a first body having at least one groove formed along a circumference of the outer circumferential surface and a second body having a plurality of inlet grooves disposed radially about a center thereof. At the time of acquisition, it is possible to achieve an accurate impression acquisition by minimizing the axial flow and the rotational flow of the impression coping in the impression material, and to perform the pickup function of the impression coping stably.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in order to avoid unnecessary obscuration of the present invention.

1 is a perspective view of an implant coping for implant surgery according to an embodiment of the present invention, Figure 2 is a front view of the impression coping of Figure 1, Figure 3 is a cut flatness of the impression coping according to line III-III of Figure 2 4 is a cross-sectional view of the impression coping along line IV-IV of FIG. 2.

1 to 4, the impression coping 1 according to the present embodiment is a pick-up type impression coping used in an implant procedure, and a plurality of grooves 112 are formed on an outer circumferential surface thereof. The second body 12 is formed with a first body 11 formed along the circumference and three inlet grooves 121a, 122a, 123a extending downward from the first body 11 and disposed radially with respect to the center. ) And a third body 13 extending downward from the second body 12. In addition, the impression coping 1 has a fastening hole 15 into which the guide pin 3 (see FIG. 5) to be described later is inserted from the upper end of the first body 11 to the lower end of the third body 13.

The impression coping 1 may be made of metal or synthetic resin such as stainless steel. On the other hand, in the present embodiment, the first body 11, the second body 12 and the third body 13 is formed as one body, that is, integrally, the present invention is not limited thereto.

1 and 2, the first body 11 basically has a hollow cylindrical shape, and the upper end 111 has a tapered shape in which an outer diameter decreases toward the upper side. A plurality of grooves 112 are formed along the circumference of the outer circumferential surface of the first body 11. The plurality of grooves 112 are disposed at intervals along the length direction of the first body 11. The plurality of grooves 112 formed on the outer circumferential surface of the first body 11 minimize the axial flow of the impression coping 1 in the impression material when the impression is taken to enable accurate impression acquisition, as well as the impression coping 1 The pickup function can be performed stably.

Particularly, in the present embodiment, the groove 112 is provided as a helix groove 112 formed at an angle to the outer circumferential surface of the first body 11 at an inclined angle at a predetermined angle α (see FIG. 2), and the helix groove ( 112 has a longer contact line than a horizontally disposed groove (not shown), thereby increasing the area of contact with the impression material, thereby further minimizing the axial flow of the impression coping 1 in the impression material and increasing the impression coping 1 in the impression material. Makes the pickup function more stable. On the other hand, the shape of the groove 112 is applicable to a variety of shapes, such as triangular screw shape, square screw shape, round screw shape.

However, unlike the present exemplary embodiment, a plurality of grooves (not shown) arranged horizontally may be formed on the outer circumferential surface of the first body 11, and one groove (not shown) may be formed instead of a plurality of grooves.

1 to 3, the second body 12 extends from the bottom surface of the first body 11 to the top surface of the third body 13 and has three inlet grooves 121a radially disposed with respect to the center thereof. , 122a, 123a are formed. The second body 12 includes three outer surfaces 121, 122, 123 defining three inlet grooves 121a, 122a, 123a together with the lower surface of the first body 11 and the upper surface of the third body 13. do. Specifically, the second body 12 includes a first outer surface 121 defining the first inlet groove 121a, a second outer surface 122 and a third inlet groove defining the second inlet groove 122a. A third outer surface 123 defining 123a. At this time, the three outer surfaces 121, 122, 123 in the second body 12 is arranged in a triangular structure. That is, the shape of interconnecting the three outer surfaces (121, 122, 123) is substantially a triangular pillar. The three outer surfaces 121, 122, and 123 are all formed in a flat surface, but alternatively, the three outer surfaces 121, 122, and 123 may be formed as curved surfaces such as a convex curved surface and a concave curved surface.

In addition, the second body 12 may include a first connection surface 125 connecting the first outer surface 121 and the second outer surface 122, a second outer surface 122, and a third outer surface 123. It further includes a second connection surface 126 for connecting the third connection surface 127 and the third outer surface 123 and the first outer surface 121. The three connecting surfaces 125, 126, 127 define three inlet grooves 121a, 122a, 123a and are spaced 120 ° with respect to the center of the second body 12. Each of the three connection surfaces 125, 126, and 127 forms the same surface as the lower outer peripheral surface 114 of the first body 11 and the upper outer peripheral surface 134 of the third body 13. That is, each of the three connection surfaces 125, 126, and 127 extends in the longitudinal direction from the lower outer peripheral surface 114 of the first body 11 to the upper outer peripheral surface 134 of the third body 13. Meanwhile, the three connecting surfaces 125, 126, and 127 are formed of curved surfaces having substantially the same curvature as the lower outer peripheral surface 114 of the first body 11 and the upper outer peripheral surface 134 of the third body 13. It can be formed as.

As such, the second body 12 has three inlet grooves 121a, 122a, and 123a radially disposed with respect to the center thereof, and is formed by three outer surfaces 121, 122, and 123 having a triangular structure. It is possible to minimize the rotational flow of the impression coping 1 to achieve an accurate impression acquisition, as well as to enhance the pickup function of the impression coping 1.

However, unlike the present embodiment, two inlet grooves or four or more inlet grooves may be formed in the second body 12. In other words, in the present invention, the second body 12 is not limited to including three outer surfaces 121, 122, and 123 disposed in a triangular structure, and may include a plurality of outer surfaces disposed in a polygonal structure. In addition, the second body 12 in the present invention is not limited to including three connecting surfaces (125, 126, 127) connecting the three outer surfaces (121, 122, 123), the two outer surfaces adjacent to each other in the plurality of outer surfaces It may include a plurality of connection surface for connecting. That is, the number of connection surfaces in the second body 12 may be changed according to the number of outer surfaces.

1 to 4, the third body 13 extends downward from the second body 12 and has a tapered shape in which the outer diameter decreases toward the lower side. The third body 13 is a portion coupled to the fixture 2 implanted in the alveolar bone when the impression is taken, and the three outer projections 135, 136 and 137 are formed on the outer circumferential surface of the lower end of the third body 13 to be spaced apart from each other. . 5 and 6, the three bite protrusions 135, 136, and 137 have three bite grooves formed on the inner side of the fixture 2 in a state where the third body 13 is inserted and coupled to the fixture 2. (Not shown), thereby determining the binding position of the impression coping 1 with respect to the fixture 2, and using the guide pin 3 to be described later to fix the impression coping 1 to the alveolar bone. When binding to (2), the binding position of the impression coping 1 with respect to the fixture 2 is kept stable.

On the other hand, the three biting projections 135, 136, 137 formed on the outer peripheral surface of the lower end of the third body 13, the three connecting surfaces (125, 126, 127) of the second body 12 and the position in the circumferential direction is disposed substantially the same ( AA line of FIG. 1, see FIGS. 3 and 5). In detail, the first bite protrusion 135 has a first connection surface 125, the second bite protrusion 136 has a second connection surface 126, and the third bite protrusion 137 has a third connection surface ( 127) and the position in the circumferential direction are arranged to coincide. That is, the first engagement protrusion 135, the second engagement protrusion 136, and the third engagement protrusion 137 may be formed of the first connection surface 125, the second connection surface 126, and the third connection surface 127. Each is arranged to correspond.

As such, disposing three biting protrusions 135, 136, 137 of the third body 13 so that the three connecting surfaces 125, 126, 127 of the second body 12 coincide with the positions in the circumferential direction, the operator is placed in the alveolar bone. This is to improve the convenience of the procedure by making it easy to hold the binding position of the impression coping 1 with respect to the fixture (2). This will be described in detail below.

As described above, the engagement positions of the impression copings 1 with respect to the fixture 2 are three bite projections 135, 136, 137 formed in the third body 13 which engage the three bite grooves formed in the fixture 2. Since the fixture 2 is placed in the alveolar bone and the portion where the three bite protrusions 135, 136 and 137 of the third body 13 are formed is inserted into the fixture 2, the operator has three bite protrusions. It is difficult to visually determine the position of the 135, 136, and 137, and it is difficult to establish the binding position of the impression coping 1 with respect to the fixture 2 based only on the positions of the three bite protrusions 135, 136, and 137.

However, the impression coping according to the present embodiment includes three biting protrusions 135, 136, and 137 having three connection surfaces 125, 126, 127 of the second body 12, which are not inserted into the fixture 2, on the third body 13. ) And the position in the circumferential direction is the same, the operator can easily see the binding position of the impression coping (1) relative to the fixture (2), based on the position of the three connecting surfaces (125, 126, 127), Therefore, the convenience of the procedure is improved.

However, unlike the present embodiment, three bite grooves (not shown) may be recessed on the outer circumferential surface of the third body 13 instead of the three bite protrusions 135, 136, and 137 protruding from each other. On the inner side of (2), three bite projections (not shown) are to be formed to protrude. In addition, the number of bite protrusions or bite grooves (not shown) formed on the outer circumferential surface of the third body 13 is not limited to three and may be appropriately changed. However, the bite protrusion or bite groove (not shown) of the third body 13 is preferably provided in the same number as the connection surface of the second body (12).

FIG. 5 is a perspective view illustrating the coupling between the impression coping and the fixture of FIG. 1, FIG. 6 is a front view illustrating the coupling between the impression coping and the fixture of FIG. 1, and FIG. 7 illustrates the use of the impression coping of FIG. 1. It is a perspective view which shows a state.

5 and 6, the impression coping 1 is bound to the fixture 2 by a guide pin 3, the guide pin 3 penetrating the fastening hole 15 of the impression coping 1. The lower end is screwed to the inner side of the fixture 2. To this end, a thread 31 is fastened to a screw groove (not shown) formed in the fixture 2 at the lower end of the guide pin 3, and a hexagonal driver (not shown) is provided on the upper surface of the guide pin 3. Hex nut groove 33 is formed to rotate the guide pin (3) using.

Hereinafter, an impression acquisition process using the impression coping 1 according to the present embodiment will be briefly described with reference to FIG. 7.

First, the impression coping 1 is placed on the upper end of the fixture 2 placed in the alveolar bone, and the impression coping 1 is attached to the fixture 2 using the guide pin 3. At this time, the operator can easily position the binding position of the impression coping 1 with respect to the fixture 2 based on the positions of the three connection surfaces 125, 126, 127 formed in the second body 12 of the impression coping 1. have. On the other hand, the operator can use the hex driver (not shown) to rotate the guide pin 3 to bind the impression coping 1 to the fixture 2.

Next, after the impression material is applied to the teeth 10 of the subject, wait for a predetermined time until the impression material is cured, and when the impression material is cured, release the guide pin 3 using a hexagonal driver (not shown) to release the impression coping. After removal from the cured impression material, the cured impression material is removed from the patient's tooth 10. At this time, the impression coping 1 is picked up in a state of being embedded in the hardened impression material, and the plurality of grooves 112 formed in the first body 11 and three drawing grooves 121a and 122a formed in the second body 12 are provided. The pickup function of the impression coping 1 can be stably performed by 123a. In addition, the plurality of grooves 112 formed in the first body 11 minimize the axial flow of the impression coping 1 in the process of removing the impression material from the tooth 10 of the patient, and the second body 12 The three inlet grooves 121a, 122a, and 123a are formed by the impression coping in the process of rotating the guide pin 3 using a hexagonal driver (not shown) to remove the guide pin 3 from the impression coping 1. The flow in the rotational direction of 1) can be minimized.

Next, the lab analog (not shown) is inserted into the impression coping 1 embedded in the hardened impression material, the guide pin 3 is fastened to the impression coping 1 again, and the plaster is poured into the impression material to finally form the work model. To complete.

As described above, the impression coping 1 according to the present embodiment includes a plurality of grooves 112 in which the plurality of grooves 112 are radially disposed with respect to the center and the first body 11 formed along the circumference of the outer circumferential surface ( By including the second body 12, 121a, 122a, 123a is formed, it is possible to achieve the exact impression by minimizing the axial flow and rotational flow of the impression coping 1 in the impression material when the impression is taken Of course, the pickup function of the impression coping 1 can be performed stably.

In addition, the impression coping 1 according to the present embodiment, the second bite projections (135, 136, 137) formed in the third body 13 to determine the binding position of the impression coping (1) relative to the fixture (2) second By arranging the three connecting surfaces 125, 126 and 127 formed in the body 12 so that their positions in the circumferential direction coincide, the operator can easily position the binding position of the impression coping 1 with respect to the fixture 2 placed in the alveolar bone. The convenience of the procedure can be improved.

It is apparent to those skilled in the art that the present invention is not limited to the above-described embodiments and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

1 is a perspective view of an implant coping for an implant procedure according to an embodiment of the present invention.

FIG. 2 is a front view of the impression coping of FIG. 1.

3 is a cutaway plan view of the impression coping along line III-III of FIG.

4 is a cross-sectional view of the impression coping along line IV-IV of FIG. 2.

5 is a perspective view for explaining the binding between the impression coping and the fixture of FIG.

FIG. 6 is a front view for explaining the binding between the impression coping and the fixture of FIG. 1.

7 is a perspective view showing a state of use of the impression coping of FIG.

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

1: Impression Coping

2: fixture

3: guide pin

11: first body

12: second body

13: third body

15: fastener

112: Helix Groove

121,122,123: Outer side

125,126,127: connection surface

121a, 122a, 123a: Inlet Groove

135,136,137: bite bump

Claims (14)

A first body having at least one groove formed along a circumference of an outer circumferential surface thereof; A second body extending downward from the first body and having a plurality of inlet grooves disposed radially with respect to a center thereof; And Impression coping for implant surgery, characterized in that it comprises a third body extending downward from the second body. The method of claim 1, The groove is Impression coping for implant treatment, characterized in that provided with a helix groove (helix groove) is formed obliquely inclined on the outer peripheral surface of the first body. The method of claim 2, The at least one groove is Impression coping for implant surgery, characterized in that a plurality of grooves are arranged at intervals along the longitudinal direction of the first body. The method according to claim 1 or 3, The second body includes the plurality of outer surfaces defining the plurality of inlet grooves together with the lower surface of the first body and the upper surface of the third body, Impression coping for implant surgery, characterized in that the plurality of outer surface is arranged in a polygonal structure. 5. The method of claim 4, The second body, Implant coping for implant surgery, characterized in that it further comprises a plurality of connecting surfaces for connecting the two outer surfaces adjacent to each other in the plurality of outer surfaces. The method of claim 5, The third body, Impression coping for implant treatment, characterized in that a plurality of bite protrusions disposed at intervals along the circumferential direction protrude on the outer circumferential surface, or a plurality of bite grooves disposed at intervals on the outer circumferential surface are recessed on the outer circumferential surface. . The method of claim 6, The plurality of connection surfaces, Implant coping for implant operation, characterized in that the plurality of biting projections or the plurality of bite grooves and the position in the circumferential direction is arranged substantially the same. The method of claim 7, wherein The plurality of connection surfaces, Impression coping for implant surgery, characterized in that provided in the same number as the plurality of biting projections or the plurality of biting grooves. The method of claim 5, The connecting surface is Impression coping for implant operation, characterized in that extending from the outer peripheral surface of the lower end of the first body to the outer peripheral surface of the upper end of the third body. The method of claim 5, Implantable coping for implant surgery, characterized in that the outer surface is a plane, the connection surface is a curved surface. The method according to claim 1 or 3, The third body, Impression coping for implant surgery, characterized in that it has a tapered shape that the outer diameter decreases toward the lower side. The method according to claim 1 or 3, The plurality of inlet grooves include a first inlet groove, a second inlet groove, and a third inlet groove, The second body includes a first outer side defining the first inlet groove, a second outer side defining the second inlet groove and a third outer side defining the third inlet groove, And the first outer side surface, the second outer side surface and the third outer side surface are arranged in a triangular structure. The method of claim 12, The second body, A first connection surface connecting the first outer surface and the second outer surface, a second connection surface connecting the second outer surface and the third outer surface, and the third outer surface and the first outer surface; Impression coping for implant treatment further comprises a third connecting surface for connecting. The method of claim 13, The third body has a tapered shape in which the outer diameter decreases toward the lower side, and the first bite protrusion, the second bite protrusion, and the third bite protrusion are disposed to be spaced apart from each other along the circumferential direction, protruding from the outer peripheral surface, And the first connection surface, the second connection surface and the third connection surface are disposed to correspond to the first bite protrusion, the second bite protrusion and the third bite protrusion, respectively.

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