KR20220141018A - apparatus of cylinder for dental implant - Google Patents

Abstract

In order to improve the bonding force with a prosthesis, the present invention relates to an implant cylinder device which is embedded in a buried hole formed in a position aligned with an implant in the prosthesis so that the prosthesis replacing a lost tooth is coupled to the implant placed in the arch to be restored and fixed in the oral cavity, and which is hardened and attached through a curable resin. The implant cylinder device includes: a cylinder body portion having therein a coupling groove in which the outer surface of the post protruding from the top of the implant is inserted and contact-supported, and having, on an outer circumference, an alignment protrusion corresponding to a polygonal alignment groove formed on an inner circumference of an upper end of the implant so as to align a coupling direction with the implant; and an extension portion extending upward of the cylinder body portion, wherein an engaging step protrudes radially inward along the boundary of the coupling groove and the coupling hole formed through the longitudinal direction to communicate with the coupling groove, a concave-convex part formed in multiple stages by alternating a plurality of ring-shaped projections and filling grooves along the longitudinal direction on the outer circumference, and a guiding groove part recessed in a predetermined cross direction in the plurality of projections so as to form a filling space communicating with the filling grooves to guide the curable resin to each of the filling grooves.

Description

Cylinder device for implants {apparatus of cylinder for dental implant}

The present invention relates to a cylinder device for implants, and more particularly, to a cylinder device for implants in which coupling force with a prosthesis is improved.

In general, a dental restoration refers to an artificial periodontal tissue in the oral cavity that artificially restores the appearance and function to replace a missing tooth. Such dental restorations may be classified into dentures, which are adhesively fixed to the restoration target gums through an adhesive, or dental prosthesis, which is fixed to implants placed in alveolar bone.

In detail, the prosthesis includes an artificial tooth part in which a plurality of artificial teeth replacing the lost natural teeth are arranged or connected to the teeth corresponding to the arch shape of the restoration target gum, and an artificial gum part surrounding and connecting the lower end of the artificial tooth part. can do. In this case, a plurality of implants are placed on the restoration target gum along the arch, and a coupling portion may be formed in the prosthesis to correspond to the placement position of the implant. Here, the coupling part may be formed in the form of a buried hole, and the support cylinder may be buried and fixed in the buried hole through a curable resin.

At this time, the support cylinder is a device that mediates the prosthesis and the implant, and a protruding structure protruding from the upper end of the implant, for example, a coupling groove through which the outer surface of the post of the abutment coupled to the implant is inserted and supported is formed at the lower end. . In addition, when the support cylinder and the abutment are fastened through a fastening screw inserted into the fastening hole formed in the longitudinal direction at the center, the prosthesis may be installed in the oral cavity. As the support cylinder is formed of a metal material, the bonding strength with the abutment formed of the same metal material may be stably supported.

On the other hand, in order to increase the contact area with the curable resin so that the support cylinder is firmly attached to the buried hole, a multi-stage uneven portion is formed on the outer periphery of the support cylinder. In this case, the support cylinder extends in a cylindrical shape having an outer periphery of the upper and lower ends having substantially the same diameter, and the concavo-convex portion is recessed in a ring shape in a radially inward direction of the support cylinder. Accordingly, each concave groove of the concave-convex part is divided vertically by the protruding thickness of each convex part.

For this reason, there is a problem that the curable resin having a predetermined viscosity cannot be uniformly and densely filled in each of the grooves, and the support cylinder cannot be firmly fixed. In addition, since the uneven portion is formed in a ring shape as a whole along the outer periphery of the support cylinder, even after the curable resin is cured, there is a problem in that the support cylinder is idle and the coupling precision is deteriorated.

Korean Patent Registration No. 10-1685934

In order to solve the above problems, an object of the present invention is to provide a cylinder device for implants in which coupling force with a prosthesis is improved.

In order to solve the above problems, the present invention provides a prosthesis replacing a lost tooth by being embedded in a buried hole formed at a position aligned with the implant in the prosthesis so that it is coupled to an implant placed in the restoration target arch and fixed in the oral cavity. In the cylinder device for implant which is hardened and attached through a resin, a coupling groove in which an outer surface of a post protruding from an upper portion of the implant is inserted and supported in contact is formed therein, and the upper end of the implant is aligned in a coupling direction with the implant. a cylinder body having an alignment protrusion corresponding to the polygonal alignment groove formed on the inner periphery formed on the outer periphery; And extending upwards of the cylinder body portion, the engaging step protrudes in the radially inward direction along the boundary of the coupling hole formed through the coupling groove in the longitudinal direction so as to communicate with the coupling groove, and has a ring shape along the longitudinal direction on the outer periphery. Induction recessed in a predetermined intersection direction on a plurality of protrusions so that a plurality of protrusions and filling grooves are alternately formed in multiple stages, and a filling space communicating with the filling grooves is formed to guide the curable resin into the filling grooves. It provides a cylinder device for implants, characterized in that it includes an extended portion formed with a groove portion.

Through the above solutions, the present invention provides the following effects.

First, as the guide grooves are continuously depressed along the vertical direction of the protrusions formed in plurality along the longitudinal direction of the extension to increase the contact area of the curable resin, the filling grooves divided up and down are communicated and the curable resin is filled as a whole, so the fixing force This can be significantly improved.

Second, the curable resin is filled and cured in the filling groove formed recessed along the circumferential direction of the extension to prevent vertical deviation of the cylinder device, and the curable resin is also filled and cured in the guide groove formed in the direction crossing the filling groove in the circumferential direction. By preventing the rotation to the coupling direction precision can be remarkably improved.

Third, as the guide groove is formed to extend in a gradient in one circumferential direction of the extension, when the cylinder device is inserted into the buried hole filled with the curable resin, the curable resin rotates and flows into the inside of the filling groove along the gradient of the guide groove to make it more dense. Since it is filled, the cylinder device can be firmly fixed.

Fourth, the recessed depth of the filling recess formed at the upper end of the extension is formed deeper than the recessed depth of the filling recess formed at the lower end of the extended part adjacent to the bonding position with the implant. Because it is easy, the usability can be significantly improved as it can be applied interchangeably to the prosthesis manufactured for the patient.

1 is an exemplary view showing a state in which a cylinder device for implants is fixed to a prosthesis according to an embodiment of the present invention.
Figure 2 is a perspective view of a cylinder device for implants according to an embodiment of the present invention.
3 is a cross-sectional view of a cylinder device for implants according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing a modified example of the cylinder device for implants according to an embodiment of the present invention.
5 is a perspective view of a cylinder device for implants according to another embodiment of the present invention.
Figure 6 is a lateral cross-sectional view of the cylinder device for implants according to another embodiment of the present invention.
7 is a cross-sectional photograph comparing a state in which the cylinder device for implant according to the present invention is fixed to a buried hole of a prosthesis with a conventional example.

Hereinafter, a cylinder device for implants according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. At this time, it is preferable to understand that the cylinder device and the cylinder device for implants have the same meaning in the following. In addition, the arrow indicated by a in the drawing indicates the extension direction of the guide groove to be described later, and the arrow indicated by b in the drawing indicates the direction in which the curable resin to be described later flows into the filling groove to be described later through the guide groove. It is desirable to understand

1 to 3 , the cylinder device 100 for implant according to the present invention includes a cylinder body portion 10 and an extension portion 20 , and the prosthesis 300 is fixed to the prosthesis 300 . ) mediates the coupling of the implant (1). Here, the cylinder device 100 is preferably formed of a metal material such as titanium, which has high strength and excellent corrosion resistance, and is biocompatible, and may be made of a metal material commonly used for dental restoration.

In detail, the cylinder device 100 is embedded in the embedding hole 301 formed in the prosthesis 300 so that the prosthesis 300 is coupled to the implant 1 placed in the restoration target arch 2 and fixed in the oral cavity. It is preferable to understand that it is a dental restoration part that is attached through a resin. In addition, it is preferable to understand that the implant (1) is a fixture to be placed in the alveolar bone of the restoration target arch (2), and the abutment (5) can be selectively fastened to the upper end of the implant (1). . In addition, the prosthesis 300 is preferably understood as a dental restoration to replace a lost tooth, and is in a form supported by the alveolar bone through the implant 1 , and is located in a portion corresponding to the placement position of the implant 1 . A buried hole 301 may be formed. In addition, it is preferable to understand that the restoration target arch 2 is an arch that requires dental restoration.

That is, the cylinder device 100 is embedded and fixed in the buried hole 301 formed in the prosthesis 300 . Then, the implant 1 is placed in the restoration target arch 2 , and the abutment 5 is fixed to the upper end of the implant 1 . At this time, the post 5a protruding from the upper end of the abutment 5 is inserted to fit into the coupling groove 11 formed at the lower end of the cylinder device 100 . And, when the cylinder device 100 and the abutment 5 are coupled through the fastening screw (s), the prosthesis 300 is installed in the oral cavity and the restoration target arch 2 through the implant 1 ) can be supported on the alveolar bone.

Here, it is preferable that the cylinder body portion 10 has a coupling groove 11 formed therein through which the outer surface of the post 5a protruding from the upper end of the implant 1 is inserted and supported in contact. At this time, it is preferable to understand that the post 5a protruding from the upper end of the implant 1 is substantially the post 5a formed in the abutment 5 .

On the other hand, it is preferable that the support step 13 and the alignment protrusion 12 are formed on the outer surface of the cylinder body 10 .

In detail, the support step 13 is formed to have a diameter exceeding the inner diameter of the buried hole 301 , and is preferably formed to have a step difference from the extension part 20 . Accordingly, when the cylinder device 100 is inserted into the embedding hole 301 , the insertion depth may be limited as the upper surface of the support step 13 is caught by the edge of the embedding hole 301 . At this time, it is preferable that the circumferential direction upper surface edge of the support step 13 and the circumferential direction edge of the buried hole 301 are in full contact. Accordingly, it is possible to prevent the adhesive filled inside the buried hole 301 from leaking out of the buried hole 301 . At this time, the adhesive is preferably provided with a curable resin (r) containing the same composition as the prosthetic material, and will be described as the curable resin (r) hereinafter.

In addition, the alignment protrusion 12 is preferably formed to be spaced apart from the upper side of the support step 13 , and preferably formed to have a cross-sectional area less than the inner periphery of the buried hole 301 . At this time, it is preferable that the alignment protrusion 12 is formed with a decut alignment surface 12a corresponding to a predetermined direction. Accordingly, the alignment protrusion 12 may have a substantially hexagonal cross-sectional shape in the transverse direction. The alignment surface 12a is preferably formed to correspond to each surface of the polygonal alignment groove formed on the inner periphery of the upper end of the implant 1, through which the coupling direction between the cylinder device 100 and the implant 1 is aligned. can be

Here, between the alignment protrusion 12 and the support step 13 , a fitting groove 14 recessed to less than the cross-sectional area of the alignment protrusion 12 may be formed. It is preferable to understand that the fitting groove 14 is a groove into which a rubber dam provided to prevent the curable resin r from adhering to the gum of the restoration target arch 2 is inserted. That is, when the fitting groove 14 is inserted into the insertion hole formed in the rubber dam, the curable resin r is filled in the embedding hole 301 and even if it flows downward by gravity, the restoration target arch (2) direct adhesion to the At this time, it is preferable that the insertion hole is formed with a diameter smaller than the cross-sectional diameter of the fitting groove (14). Therefore, since the rubber dam is elastically fixed to the cylinder device 100, contamination of the restoration target arch 2 due to the curable resin r in the filling and curing process of the curable resin r can be prevented in advance. can

On the other hand, the extension portion 20 is formed in a hollow communication with the coupling groove (11), it is preferable to extend integrally to the upper side of the cylinder body portion (10). That is, in the cylinder device 100, the cylinder body portion 10 and the extension portion 20 are integrally formed, and it is preferable to understand that it is described separately according to its position.

In detail, it is preferable that the extension part 20 includes a fastening hole 21 penetrating in the longitudinal direction so as to communicate with the coupling groove 11 therein. And, it is preferable that the engaging step 22 protruding radially inward along the boundary between the coupling groove 11 and the fastening hole 21 is formed therein. That is, the cylinder device 100 may be formed in a tubular shape in which the coupling groove 11, the inside of the engaging step 22, and the fastening hole 21 are continuously communicated.

In addition, it is preferable that a plurality of ring-shaped protrusions 24 and filling recesses 25 are alternately formed in multiple stages on the outer periphery of the extension portion 20 along the longitudinal direction to form concave-convex portions 23 formed in multiple stages. Accordingly, the contact area between the curable resin r and the cylinder device 100 increases, so that the bonding force can be improved. In addition, the curable resin (r) is filled in the filling groove 25, the cured projection may be caught in the projection 24 protruding above and below the filling groove (25). Accordingly, it is possible to prevent in advance that the cylinder device 100 is separated from the buried hole 301 .

Here, it is preferable that the plurality of protrusions 24 are formed with guide grooves 28 recessed in a predetermined crossing direction. Here, it is preferable to understand that the depression in the cross direction means that the direction in which the guide groove portion 28 is continuously depressed is formed to be different from the direction in which the protrusion portion 24 protrudes in the circumferential direction. That is, when the protrusion 24 protrudes along the circumferential direction of the extension portion 20 , the guide groove portion 28 may be recessed in the longitudinal direction of the extension portion 20 .

In detail, the guide groove portion 28 is formed to be recessed in a radially inward direction from the outer periphery of the extension portion 20 , and is preferably formed in a plurality of spaced apart from the extension portion 20 in the circumferential direction. At this time, as the guide grooves 28 are recessed in each of the protrusions 24, the filling grooves 25 divided up and down through one of the protrusions 24 can communicate with each other as an undercut. can function. In addition, the guide groove 28 itself may be formed as a filling space in which the curable resin r is filled.

Therefore, when the curable resin r having a predetermined viscosity is filled between the cylinder device 100 and the embedding hole 301 , it is directed to both sides of each of the guide grooves 28 through the guide grooves 28 . It can be easily moved to the inside of the filling groove 25 communicating with it and filled. That is, even if the outer diameter of the extension portion 20 and the inner diameter of the buried hole 301 are formed to have a minimum gap, a flow path through which the curable resin r can flow through the guide groove portion 28 is secured. can be

Through this, since the curing protrusion and the protrusion 24 formed by filling and curing the curable resin r in the filling groove 25 are engaged with each other, the cylinder device 100 is prevented from being separated in the vertical direction. can do. In addition, since the contact area with the curable resin r increases through the uneven structure of the uneven portion 23, the adhesive force may be remarkably improved.

Furthermore, the guide grooves 28 are formed to be recessed in each of the protrusions 24 to form the filling space, and the direction thereof is formed in a direction substantially crossing the filling recesses 25 . Therefore, when the curable resin (r) is cured, the cylinder device 100 is not only restricted from moving in the vertical direction through the hardening protrusion formed on the inside of the filling concave groove 25, but also the induction groove portion 28. Rotation in the circumferential direction may also be constrained through the constraining protrusion hardened on the inside. Through this, since the cylinder device 100 is prevented from being rotated unnecessarily in the buried hole 301, the coupling precision can be remarkably improved.

On the other hand, it is preferable that the extension part 20 includes a dimension fixing part 23a and a length variable part 23b. Here, the first filling recess (25a) and the second filling recess (25b) to be described later are divided according to the depth of the depression, and the filling recess (25) is the first filling recess (25a) and the second filling recess (25b). It is preferable to understand that it is meant to encompass (25b).

In detail, it is preferable to understand that the dimension fixing part 23a has a structure formed on the lower side of the extension part 20 integrally connected with the cylinder body part 10 .

In this case, the dimension fixing part 23a includes a plurality of the first filling recesses 25a that are recessed in multiple stages in response to a predetermined first dent depth d1 in a radially inward direction from the outer periphery of the extension part 20 . It is preferable to do Here, the side of the dimension fixing part 23a and the side of the variable length part 23b to be described later have substantially the same thickness from the inner periphery of the fastening hole 21 to the outer periphery of the protrusion 24 . Accordingly, when the first filling groove 25a is depressed corresponding to the first depression depth d1, the first filling groove is the filling groove on the inner periphery of the fastening hole 21 and the dimension fixing part 23a. An inner wall formed between the inner surfaces of the recesses 25a may be formed to a predetermined first thickness w1.

In addition, it is preferable to understand that the variable length portion 23b is continuously connected to the upper side of the dimension fixing portion 23a and is formed under the extension portion 20 . At this time, the variable length portion 23b includes a plurality of the second filling recesses 25b that are recessed in multiple stages in response to a preset second depression depth d2 in the radially inward direction from the outer periphery of the extension portion 20 . It is preferable to do Here, the second depression depth d2 preferably exceeds the first depression depth d1. Accordingly, when the second filling recess 25b is recessed corresponding to the second recess depth d2, the second filling recess is the filling recess on the inner periphery of the fastening hole 21 and the length-variable part 23b side. The inner wall formed between the inner surfaces of the recesses 25a may be formed to a predetermined second thickness w2. Here, the second thickness w2 may be thinner than the first thickness w1.

Through this, the inner wall of the dimension fixing portion 23a adjacent to the portion to which the post 5a is coupled may be formed to be thicker than the inner wall thickness of the variable length portion 23b. Accordingly, since the bonding strength between the cylinder device 100 and the post 5a and the support strength in a state where the cylinder device 100 is fixed to the prosthesis 300 are improved, it is possible to stably support the masticatory pressure. In addition, even if the first filling groove 25a is formed in multiple stages in the extension part 20, damage to the extension part due to the masticating pressure can be prevented.

And, as the inner wall of the variable length portion 23b is formed to be relatively thin, it may be utilized as a part capable of adjusting the length of the cylinder device 100 . That is, the protrusion 24 and the second filling recess 25b may be cut to a length corresponding to each prosthesis using a predetermined interval as a cutting unit. Therefore, after the cylinder device 100 is standardized to a minimum number and mass-produced, it can be easily cut to a required length to correspond to the height of each prosthesis 300 .

Through this, since the design and facility process of the cylinder device 100 is simplified, productivity and economic efficiency can be significantly improved. In addition, the inconvenience of having to provide a plurality of models to match the cylinder device 100 to the standard of each abutment 5 and the standard of the prosthesis 300 can be minimized in a dentist or dental laboratory. Moreover, since the inner wall of the variable length part 23b side is thinly formed through the second filling groove 25b, it can be easily cut with a dental tool (such as a grinder), so that the convenience of use can be significantly improved.

On the other hand, the guide groove 28 is from the inlet portion 28a opened toward the upper end of the extension portion 20 to the end portion 28b communicating with the lowermost filling groove 25 among the plurality of filling grooves 25. It is preferable to form an extension. At this time, it is preferable to understand that the guide groove portion 28 has an extended shape, so that the guide groove portion 28 recessed in each of the protrusions 24 is continuously matched with a continuous virtual line. Accordingly, the filling space formed inside each of the guide grooves 28 may be continuously formed along the longitudinal direction of the extension 20 , and the plurality of filling grooves 25 may communicate as a whole. .

In addition, it is preferable that the guide grooves 28 are spaced at equal intervals along the circumferential direction of the extension portion 20 to form at least two or more in plurality. For example, as shown in FIG. 2 , the guide groove 28 may be formed to be spaced apart at equal intervals in three places along the circumferential direction of the extension 20 , and as shown in FIG. 6 to be described later, the extension 220 . It may be formed at equal intervals in six places along the circumferential direction of the .

As such, when a plurality of guide grooves 28 are formed along the circumferential direction of the extension 20 , the filling interval of the curable resin r introduced into the filling recess 25 through the guide groove 28 . This can be shortened. That is, even if the curable resin r has somewhat low fluidity due to its own viscosity, it is possible to substantially reduce the movement interval of the curable resin r by shortening the left and right intervals between the respective guide grooves 28 . Therefore, the curable resin (r) can be introduced in both directions through each of the guide grooves 28, and as a plurality of these guide grooves 28 are formed, the curable resin (r) is formed in the filling grooves 25. This can be substantially densely packed.

At this time, it is preferable that the depression depth of the guide groove portion 28 is formed to be less than or equal to the first depression depth d1. That is, the depth of the depression of the guide groove portion 28 is preferably formed to a depth sufficient to allow communication between the filling grooves 25 adjacent up and down. Therefore, while the flow of the curable resin r through the guide groove 28 is facilitated, the thickness of the inner wall on the side of the dimension fixing portion 23a is thin due to the guide groove portion 28. Therefore, durability can be significantly improved.

On the other hand, it is preferable that the guide groove portion 28 is formed in the form of a depression groove formed to be continuously inclined along one circumferential direction of the protrusion portion 24 formed in multiple steps in the vertical direction of the extension portion 20 . Second, the continuous gradient means that the guide groove portion 28 extends in a diagonal line along the longitudinal direction of the extension portion 20 , and that the extension portion 20 extends in a helix along the longitudinal direction of the extension portion 20 . ), it is preferable to understand the meaning to encompass the extension.

As such, when the guide groove 28 is formed to be inclined along one circumferential direction of the protrusion 24, each of the guide grooves 28 formed in each of the protrusions 24 adjacent up and down will be displaced in the circumferential direction. can Therefore, even if each of the guide grooves 28 are formed to be spaced apart along the circumferential direction of the extension 20 , the curable resin r is filled in each of the filling grooves 25 through the guide grooves 28 . It may be distributed as a whole corresponding to the circumferential direction of the extension portion 20 . That is, even if the porous layer is formed inside each of the filling recesses 25 adjacent to the top and bottom by the viscosity of the curable resin r, the positions are different for each filling recess 25 in the longitudinal direction. can Therefore, in the state in which the curable resin r is cured, the fixing force of the cylinder device 100 embedded in the cylinder device 100 is uniformly formed as a whole in the cylinder device 100, so that durability can be remarkably improved.

4 is a cross-sectional view showing a modified example of the cylinder device for implants according to an embodiment of the present invention. In this modified example, the basic configuration except for the detachable abutment 50 is the same as that of the above-described embodiment, so a detailed description of the same configuration will be omitted.

Referring to FIG. 4 , the abutment may be provided as a detachable abutment 50 from which a post is separated. Here, the detachable abutment 50 may include a fixed body portion 50b fixed to the implant and a detachable post coupled to an upper side of the fixed body portion 50b. In this case, the cylinder device 100A may be provided as a detachable post of the detachable abutment 50 . Hereinafter, the detachable post will be described and illustrated as the cylinder device 100A.

In detail, the cylinder device 100A may be formed as a recessed groove in which the coupling groove 111 is fitted to the protrusion 50a protruding upward of the fixed body 50b. And, when the screw (s) introduced through the fastening hole 21 formed in the extension part 20 is fastened to the protrusion part 50a, the engagement between the screw (s) and the protrusion part 50a The step 22 may be clamped and fixed. Through this, the cylinder device 100A may be fixed to the upper side of the detachable abutment 50 .

At this time, the support step 113 is seated on the upper surface of the fixed body portion 50b, and the lower portion of the support step 113 is a restraint protrusion that is inserted into the restraint groove formed on the upper portion of the fixed body portion 50b ( 113a) may protrude. Each of the constraining grooves and the constraining protrusion 113a may have a polygonal shape such as a hexagon in cross-sectional shape, and each side may be formed in a direction corresponding to each other. Through this, the coupling direction between the fixed body portion 50b and the cylinder device 100A may be aligned.

5 is a perspective view of a cylinder device for implants according to another embodiment of the present invention, and FIG. 6 is a lateral cross-sectional view of the cylinder device for implants according to another embodiment of the present invention. In this embodiment, except for the extension part 220, the basic configuration is the same as the above-described embodiment, so a detailed description of the same configuration will be omitted. And, it is preferable to understand that the circular two-dot chain line indicated and shown as m224 in FIG. 6 is an imaginary line corresponding to the shape of the protrusion before the cutting surface portion 229, which will be described later, is formed.

5 to 6 , the induction groove 228 is cut to be stepped in a radially inward direction from the outer circumferential surface of the extension portion 220 so that the filling groove 225 communicates through the cut surface portion 229 . can be formed. In this case, the cutting surface portion 229 may be formed in a plane formed at a position spaced apart from the virtual tangent with the outer peripheral surface of the extension portion 220 by a distance smaller than the minimum dent depth of the filling recess 225 . Accordingly, each of the cutting surfaces 229 may be formed along the circumferential direction of each of the protrusions 224 . In addition, a nail or semicircular space formed between each of the cutting surface part 229 and the embedding hole 301 may function as the guide groove part 228 .

In this case, the extension portion 220 may be formed in a polygonal cross-sectional shape through the cutting surface portion 229 . For example, the cutting surface portion 229 may be formed at equal intervals in six places along the circumferential direction of the extension portion 220, and thus the extension portion 220 on which the cutting surface portion 229 is formed, preferably the A transverse cross-sectional shape of the protrusion 224 may be formed in a hexagonal shape.

As such, the cutting surface portion 229 may function as a restraining surface for preventing rotation of the cylinder device 200 . In addition, the gap formed through the cutting surface portion 229 may function as the guide groove portion 228 through which the curable resin r may flow into the filling groove 225 .

Moreover, the cutting surface portion 229 is preferably formed to correspond to the alignment surface 12a formed on the alignment protrusion 12, so that the coupling direction between the cylinder device 200 and the implant can be aligned.

7 is a cross-sectional photograph comparing the state in which the cylinder device for implant according to the present invention is fixed to the buried hole of the prosthesis with the conventional example.

At this time, it is preferable to understand that in the embodiment, the guide groove is formed in the extension portion, as in the above-described embodiment, and in the prior art, the guide groove portion is not formed in the extension portion. At this time, the guide groove formed in the above embodiment was prepared to be formed in a spiral shape in the extension portion. At this time, the prosthetic specimens for testing the holding force of the examples and the prior art were made of the same material and the same size, and after forming a buried hole of the same size in each of the prosthetic specimens, the same amount of curable resin was applied. In addition, the cylinder device samples prepared in the embodiment and the conventional example were prepared to have the same basic configuration and size except for the guide groove portion.

As shown in FIG. 7 , in the embodiment in which the guide groove portion is formed in the extension part, it can be confirmed that the curable resin is substantially filled in the inner filling space (r2) of the filling groove (r1) and the guide groove portion (r2). have.

And, in the conventional example in which the guide groove is not formed in the extension part, it can be confirmed that the curable resin is not properly filled in the inner side (r3) of the filling groove, and a large number of voids are generated. It is preferable to understand that this is because the curable resin did not flow properly because each of the filling grooves was partitioned as a whole along the circumferential direction due to the protrusion protruding in the radially outward direction.

Through this, in the cylinder device according to the present invention, it can be confirmed that the curable resin is completely filled in the filling groove through the guide groove part, and thus the cylinder device can be firmly embedded and fixed in the embedding hole. can be checked through

In this way, the cylinder device 100, 100A, 200 according to the present invention has a vertical direction on the protrusions 24 and 224 formed in plurality along the longitudinal direction of the extension parts 20 and 220 so that the contact area of the curable resin r is increased. Accordingly, the guide grooves 28 and 228 are continuously depressed. Accordingly, as the filling recesses 25 and 225 partitioned in the upper and lower portions communicate with each other, the curable resin r is entirely filled inside each of the filling recesses 25 and 225, so that the fixing force can be significantly improved.

At this time, the curable resin (r) is filled and cured in the filling grooves 25 and 225 recessed along the circumferential direction of the extension parts 20 and 220 to prevent vertical separation of the cylinder devices 100, 100A, 200. have. In addition, the curable resin r may be filled and cured in the guide grooves 28 and 228 formed in the direction crossing the filling grooves 25 and 225 . Through this, the cylinder device (100, 100A, 200) can be prevented from rotating in the circumferential direction at the same time, the coupling direction precision can be significantly improved.

Furthermore, the guide groove portion 28 may be formed to extend in a gradient in one circumferential direction of the extension portion 20 . Accordingly, when the cylinder device 100, 100A is inserted into the embedding hole 301 filled with the curable resin r, the curable resin r is formed in the filling groove along the gradient direction of the guide groove 28. As it is rotated into the inside of (25) and filled more densely, the cylinder devices 100 and 100A can be firmly fixed.

In addition, the depth of depression of the filling groove 25b formed at the upper end of the extension parts 20 and 220 is deeper than the depression depth of the filling groove 25a formed at the lower end of the extension parts 20 and 220 adjacent to the bonding position with the implant 1 . is formed Accordingly, as the thickness of the inner wall of the upper end of the extension parts 20 and 220 decreases, the length is cut to facilitate use. Through this, since it can be applied interchangeably to the prosthesis manufactured for the patient, the usability can be significantly improved.

On the other hand, terms such as "comprises", "comprises", "provide" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated. It should be construed as not excluding components, but may further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and variations can be implemented by those of ordinary skill in the art to which the present invention pertains without departing from the scope of the claims of the present invention. and such modifications are within the scope of the present invention.

1: Implant 2: Restoration target arch
5: abutment 10: cylinder body
11: coupling groove 20: extension
23: uneven part 23a: dimension fixing part
23b: variable length part 25: filling groove
28: guide groove 100: cylinder device for implant
300: prosthesis 301: buried hole

Claims (5)

In a cylinder device for implants that are embedded in an embedding hole formed at a position aligned with the implant in the prosthesis and hardened and attached through a curable resin so that the prosthesis replacing the lost tooth is coupled to the implant placed in the restoration target arch and fixed in the oral cavity. in,
A coupling groove is formed therein through which the outer surface of the post protruding from the top of the implant is inserted and supported in contact, and an alignment protrusion corresponding to the polygonal alignment groove formed on the inner periphery of the upper end of the implant so that the coupling direction with the implant is aligned. a cylinder body formed on the outer periphery; and
Doedoe extending to the upper side of the cylinder body, the engaging step protrudes radially inward along the boundary of the coupling hole and the coupling hole formed through the coupling hole in the longitudinal direction to communicate with the coupling groove, and a ring-shaped protrusion on the outer periphery along the longitudinal direction and a plurality of filling grooves alternately formed in multiple stages, and induction grooves recessed in a predetermined intersection direction on the plurality of protrusions to form a filling space communicating with the filling grooves in order to guide the curable resin to each of the filling grooves. Cylinder device for implant, characterized in that it comprises an extended portion formed with an additional. The method of claim 1,
the extension
It is formed on the lower side of the extension part integrally connected with the cylinder body part, and a first recessed depth in a radially inward direction from the outer periphery of the extension part so that an inner periphery of the fastening hole and an inner surface of the filling groove are formed to a predetermined first thickness. In response to the multi-stage recessed dimension fixing part,
It is formed on the upper side of the extension part and exceeds the first depression depth in the radially inward direction from the outer periphery of the extension part so that the space between the inner periphery of the fastening hole and the inner surface of the filling groove is formed to a second thickness thinner than the first thickness Cylinder device for implant, characterized in that it includes a variable length recessed in multiple stages corresponding to the second depression depth. 3. The method of claim 2,
The guide groove
The filling space is formed to be continuously communicated from the inlet part opened toward the upper end of the extension part to the end part which is in communication with the lowermost filling groove among the filling grooves. It is formed in more than one plurality,
Cylinder device for implant, characterized in that the depression depth of the guide groove portion is formed to be less than the first depression depth. 4. The method of claim 3,
The guide groove portion is a cylinder device for implant, characterized in that formed in the form of a recessed groove formed to be continuously inclined along one circumferential direction of the protrusion formed in multiple steps in the vertical direction of the extension portion. The method of claim 1,
The guide groove portion is cut stepwise in the radial direction from the outer circumferential surface of the extension portion at an interval smaller than the minimum dent depth of the filling groove and is formed to communicate with the filling groove through the cutting surface formed to correspond to each surface of the alignment protrusion, ,
The extension portion is a cylinder device for implant, characterized in that the cross-sectional shape is formed in a polygonal shape through the cutting surface portion.

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