Sleeve crown attachment

Abstract

The utility model discloses a telescopic crown attachment. The telescopic crown attachment comprises an abutment tooth, an inner crown component and an outer crown component, the inner crown assembly is arranged on the outer side of the abutment tooth in a sleeving mode and comprises an inner crown base body, the inner crown base body is arranged on the outer side of the abutment tooth in a sleeving mode, a plurality of sets of evenly-distributed outer bosses are integrally formed on the two sides of the inner crown assembly, and elastic friction layers are arranged on the outer sides of the inner crown base body and the outer bosses in a sleeving mode. The inner crown base body is sleeved with the outer crown assembly, the outer crown assembly comprises an outer crown base body, a plurality of inner bosses are integrally formed on the inner wall of the outer crown base body, and the inner bosses and the outer bosses are distributed in a staggered mode. According to the telescopic crown attachment body disclosed by the utility model, the outer boss, the inner boss and the elastic friction layer are tightly matched, so that the matching degree of the inner crown and the outer crown of the telescopic crown attachment body is improved, and the conditions of deviation and slippage of the telescopic crown attachment body due to the influence of the matching degree of the inner crown and the outer crown in the use process are reduced; and the use stability of the telescopic crown attachment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of telescopic crown dentures, and in particular relates to a telescopic crown attachment. Background Art

[0002] A telescopic crown attachment is a removable denture with a telescopic crown as the fixed body. The telescopic crown attachment is generally composed of two parts: an inner crown and an outer crown. The inner crown is bonded to the abutment tooth, and the outer crown and the removable denture are mounted on the outside of the inner crown. The removable denture is retained by the friction generated by the close fit between the inner crown and the outer crown. It is suitable for the restoration of most missing teeth and a few retained teeth. Compared with ordinary removable dentures and bracket dentures, it has the advantages of less metal exposure, good retention support and stability, natural beauty and comfortable wearing.

[0003] Since the telescopic crown attachment mainly relies on the friction generated by the close fit between the inner crown and the outer crown to retain the removable denture, and the matching accuracy of the inner crown and the outer crown of the telescopic attachment in the prior art mainly depends on the processing accuracy of the inner crown and the outer crown. When the processing accuracy of the inner crown and the outer crown is good, the matching degree of the inner crown and the outer crown is better, and when the processing accuracy of the inner crown and the outer crown is poor, the matching degree of the inner crown and the outer crown is poor. This puts higher requirements on the processing accuracy of the telescopic crown attachment, resulting in poor stability in use of the telescopic crown attachment.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a telescopic crown attachment.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a telescopic crown attachment, which can improve the matching degree between the inner crown and the outer crown in the telescopic crown attachment and improve the use stability of the telescopic crown attachment.

[0007] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a telescopic crown attachment, including: an abutment, an inner crown component, and an outer crown component.

[0008] The inner crown component is sleeved on the outer side of the abutment tooth. The inner crown component includes an inner crown base. The inner crown base is sleeved on the outer side of the abutment tooth. Both sides of the inner crown component are integrally formed with multiple groups of evenly distributed external bosses. The inner crown base and the outer side of the external bosses are sleeved with an elastic friction layer.

[0009] The outer crown assembly is sleeved on the outside of the inner crown base. The outer crown assembly includes an outer crown base. The outer crown base is sleeved on the outside of the inner crown base. A plurality of inner bosses are integrally formed on the inner wall of the outer crown base. The plurality of inner bosses are staggered with the outer bosses.

[0010] In one or more embodiments of the utility model, a bonding layer is bonded between the inner crown base and the abutment, and the bonding layer is an oral adhesive, so that the inner crown base and the abutment can be bonded and fixed through the bonding layer.

[0011] In one or more embodiments of the utility model, the upper end of the inner crown base is rounded, and the number of the outer bosses is 2 to 4. The inner bosses cooperate with the outer bosses to assist in limiting the outer crown base and the inner crown base.

[0012] In one or more embodiments of the present invention, the inner crown base consists of a pair of inner crown side surfaces, a pair of inclined inner crown side surfaces and an inner crown top surface, and multiple groups of outer bosses are symmetrically arranged on both sides of a pair of inner crown side surfaces.

[0013] In one or more embodiments of the present invention, a pair of the inclined inner crown side surfaces are arranged on both sides of the inner crown side surface, the inner crown top surface is arranged between a pair of inner crown side surfaces and a pair of inclined inner crown side surfaces, and rounded corners are made between the inner crown top surface and the pair of inclined inner crown side surfaces.

[0014] In one or more embodiments of the present invention, an angle α is formed between the plane where the inclined inner crown side surface is located and the mid-vertical plane, and the size of the angle α is 3°.

[0015] In one or more embodiments of the utility model, a wear-resistant outer layer is sheathed on the outer side of the outer crown base body. By sheathing the wear-resistant outer layer on the outer side of the outer crown base body, the wear-resistant effect of the outer crown base body is improved.

[0016] In one or more embodiments of the present invention, the wear-resistant outer layer consists of a pair of wear-resistant front surfaces, a pair of wear-resistant side surfaces and a wear-resistant top surface. The pair of wear-resistant side surfaces are arranged on both sides of a pair of wear-resistant front surfaces, and the wear-resistant top surface is arranged between a pair of wear-resistant front surfaces and the wear-resistant side surfaces.

[0017] Compared with the prior art, the utility model discloses a sleeve crown attachment, which improves the fit between the inner crown and the outer crown of the sleeve crown attachment through the close fit between the outer boss, the inner boss and the elastic friction layer, reduces the deviation and slippage of the sleeve crown attachment caused by the fit between the inner crown and the outer crown during use, and improves the use stability of the sleeve crown attachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a side cross-sectional view of a telescopic crown attachment body in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0021] Figure 3 It is a top view of a telescopic crown attachment body in one embodiment of the utility model;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at B in the middle;

[0023] Figure 5 A three-dimensional diagram of an inner crown in one embodiment of the utility model;

[0024] Figure 6 It is a front view of an inner crown in one embodiment of the utility model;

[0025] Figure 7 It is a stereoscopic diagram of a telescopic crown attachment body in one embodiment of the utility model.

[0026] Description of main reference numerals:

[0027] 1- abutment, 2- inner crown assembly, 201- inner crown base, 2011- inner crown side surface, 2012- inclined inner crown side surface, 2013- inner crown top surface, 202- outer boss, 203- elastic friction layer, 204- bonding layer, 3- outer crown assembly, 301- outer crown base, 302- inner boss, 303- wear-resistant outer layer, 3031- wear-resistant front surface, 3032- wear-resistant side surface, 3033- wear-resistant top surface. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown, a telescopic crown attachment in one embodiment of the utility model includes: an abutment 1, an inner crown component 2, and an outer crown component 3.

[0030] like Figures 1 to 6 As shown, the inner crown assembly 2 is sleeved on the outer side of the abutment 1. The inner crown assembly 2 and the outer crown assembly 3 cooperate with each other to retain the removable denture and the abutment 1. The inner crown assembly 2 includes an inner crown base 201, which is sleeved on the outer side of the abutment 1. The inner crown base 201 is used to limit the assembly of the outer crown base 301 and the abutment 1.

[0031] like Figure 5 to Figure 6 As shown, the upper end of the inner crown base 201 is rounded. By rounding the upper end of the inner crown base 201, it is convenient to fit the abutment 1 through the inner crown base 201.

[0032] Specifically, the number of the outer bosses 202 is 2 to 4. The outer crown base 301 and the inner crown base 201 are assisted in limiting the positions by the cooperation between the inner bosses 302 and the outer bosses 202 .

[0033] Preferably, the number of the outer bosses 202 is three groups.

[0034] like Figure 5 As shown, the inner crown base 201 is composed of a pair of inner crown side surfaces 2011 , a pair of inclined inner crown side surfaces 2012 and an inner crown top surface 2013 , and multiple groups of outer bosses 202 are symmetrically arranged on both sides of the pair of inner crown side surfaces 2011 .

[0035] Specifically, a pair of inclined inner crown side surfaces 2012 are arranged on both sides of the inner crown side surface 2011, the inner crown top surface 2013 is arranged between a pair of inner crown side surfaces 2011 and a pair of inclined inner crown side surfaces 2012, and rounded corners are made between the inner crown top surface 2013 and the pair of inclined inner crown side surfaces 2012.

[0036] like Figure 5 to Figure 6 As shown, an angle α is formed between the plane where the inclined inner crown side surface 2012 is located and the mid-vertical plane, and the angle α is 3°. By tilting the inclined inner crown side surface 2012, the friction force formed by the close fit between the inner crown base 201 and the outer crown base 301 is increased, thereby improving the assembly stability of the inner crown base 201 and the outer crown base 301.

[0037] like Figures 1 to 4 As shown, multiple groups of evenly distributed outer bosses 202 are integrally formed on both sides of the inner crown assembly 2. The multiple groups of outer bosses 202 cooperate with the inner bosses 302 to prevent the inner crown base 201 and the outer crown base 301 from falling off and limiting the position.

[0038] like Figures 1 to 4 As shown, an elastic friction layer 203 is sleeved on the outer side of the inner crown base 201 and the outer boss 202. The elastic friction layer 203 is squeezed to improve the matching degree between the inner crown base 201 and the outer crown base 301, reduce the influence of the processing accuracy on the matching process of the inner crown base 201 and the outer crown base 301, and improve the matching degree between the inner crown base 201 and the outer crown base 301.

[0039] like Figures 1 to 4 As shown, a bonding layer 204 is bonded between the inner crown base 201 and the abutment 1, and the bonding layer 204 is an oral adhesive, so that the inner crown base 201 and the abutment 1 can be bonded and fixed through the bonding layer 204.

[0040] like Figures 1 to 4 As shown, the outer crown assembly 3 is sleeved on the outer side of the inner crown matrix 201, and the outer crown assembly 3 includes an outer crown matrix 301, and the outer crown matrix 301 is sleeved on the outer side of the inner crown matrix 201. The movable denture is assembled and limited by the outer crown matrix 301, so that the movable denture can be fixed by assembling and fixing the outer crown matrix 301.

[0041] like Figures 1 to 4 As shown, multiple inner bosses 302 are integrally formed on the inner wall of the outer crown base 301, and the multiple inner bosses 302 are staggered with the outer bosses 202. The inner crown base 201 and the outer crown base 301 are prevented from falling off and limited by the mutual cooperation of multiple groups of inner bosses 302 and the outer crown base 301. At the same time, the inner bosses 302 and the outer bosses 202 can squeeze the bonding layer 204, thereby improving the friction force after the inner crown base 201 and the outer crown base 301 are tightly fitted.

[0042] like Figures 1 to 4 As shown, the outer side of the outer crown base 301 is covered with a wear-resistant outer layer 303. By covering the outer side of the outer crown base 301 with the wear-resistant outer layer 303, the wear-resistant effect of the outer crown base 301 is improved, and the wear of the outer crown base 301 during use is reduced.

[0043] Preferably, the wear-resistant outer layer 303 is a titanium nanolayer.

[0044] like Figure 7 As shown, the wear-resistant outer layer 303 is composed of a pair of wear-resistant front surfaces 3031, a pair of wear-resistant side surfaces 3032 and a wear-resistant top surface 3033. The pair of wear-resistant side surfaces 3032 are arranged on both sides of the pair of wear-resistant front surfaces 3031, and the wear-resistant top surface 3033 is arranged between the pair of wear-resistant front surfaces 3031 and the wear-resistant side surfaces 3032.

[0045] When used specifically, the abutment 1 is cleaned by an oral cleaning device, and the bonding layer 204 is applied to the abutment 1 after cleaning, and the inner crown base 201 is mounted on the outer side of the abutment 1, and the inner crown base 201 is bonded to the outer side of the abutment 1 by the bonding layer 204. Subsequently, the outer crown base 301 is mounted on the outer side of the inner crown base 201, and during the mounting process of the outer crown base 301, the outer crown base 301 and the inner crown base 201 are assembled and limited by the cooperation of multiple groups of inner bosses 302 and outer bosses 202. At the same time, the outer crown base 301 and the inner crown base 201 can be tightly fitted by squeezing the elastic friction layer 203 by multiple groups of inner bosses 302 and outer bosses 202, and the cooperation degree between the inner crown base 201 and the outer crown base 301 is improved by the deformation of the elastic friction layer 203, thereby improving the stability of the use of the sleeve crown adhesion.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A telescopic crown attachment, characterized in that: include: Abutment teeth; An inner crown component is sleeved on the outer side of the abutment, the inner crown component comprises an inner crown base, the inner crown base is sleeved on the outer side of the abutment, two sides of the inner crown component are integrally formed with multiple groups of evenly distributed outer bosses, and the outer sides of the inner crown base and the outer bosses are sleeved with an elastic friction layer; The outer crown assembly is sleeved on the outer side of the inner crown base. The outer crown assembly includes an outer crown base. The outer crown base is sleeved on the outer side of the inner crown base. A plurality of inner bosses are integrally formed on the inner wall of the outer crown base. The plurality of inner bosses are staggered with the outer bosses.

2. A telescopic crown attachment according to claim 1, characterized in that: A bonding layer is bonded between the inner crown matrix and the abutment tooth, and the bonding layer is an oral adhesive.

3. A telescopic crown attachment according to claim 1, characterized in that: The upper end of the inner crown base is rounded, and the number of the outer bosses is 2 to 4 groups.

4. A telescopic crown attachment according to claim 1, characterized in that: The inner crown matrix consists of a pair of inner crown side surfaces, a pair of inclined inner crown side surfaces and an inner crown top surface, and a plurality of groups of outer bosses are symmetrically arranged on both sides of a pair of inner crown side surfaces.

5. A telescopic crown attachment according to claim 4, characterized in that: A pair of inclined inner crown side surfaces are arranged on both sides of the inner crown side surface, the inner crown top surface is arranged between a pair of inner crown side surfaces and a pair of inclined inner crown side surfaces, and a rounded corner is made between the inner crown top surface and the pair of inclined inner crown side surfaces.

6. A telescopic crown attachment according to claim 5, characterized in that: An angle α is formed between the plane where the inclined inner crown side surface is located and the mid-vertical plane, and the size of the angle α is 3°.

7. A telescopic crown attachment according to any one of claims 2 or 3, characterized in that: The inner crown matrix consists of a pair of inner crown side surfaces, a pair of inclined inner crown side surfaces and an inner crown top surface, and a plurality of groups of outer bosses are symmetrically arranged on both sides of a pair of inner crown side surfaces.

8. A telescopic crown attachment according to claim 7, characterized in that: A pair of inclined inner crown side surfaces are arranged on both sides of the inner crown side surface, the inner crown top surface is arranged between a pair of inner crown side surfaces and a pair of inclined inner crown side surfaces, and rounded corners are made between the inner crown top surface and the pair of inclined inner crown side surfaces, and an angle α is formed between the plane where the inclined inner crown side surfaces are located and the median vertical plane, and the size of the angle α is 3°.

9. A telescopic crown attachment according to claim 1, characterized in that: The outer side of the outer crown matrix is ​​sheathed with a wear-resistant outer layer.

10. A telescopic crown attachment according to claim 9, characterized in that: The wear-resistant outer layer consists of a pair of wear-resistant front surfaces, a pair of wear-resistant side surfaces and a wear-resistant top surface. The pair of wear-resistant side surfaces are arranged on both sides of the pair of wear-resistant front surfaces, and the wear-resistant top surface is arranged between the pair of wear-resistant front surfaces and the wear-resistant side surfaces.

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