Sleeve crown denture structure

Abstract

The utility model discloses a telescopic crown denture structure which comprises a telescopic crown, an artificial tooth body and a base plate, the telescopic crown is arranged on the base plate, the artificial tooth body covers the telescopic crown, the telescopic crown comprises an inner crown and an outer crown, the inner crown is connected with the base plate, the inner crown is connected with the outer crown through a screw locking device, and the outer crown is connected with the base plate through a screw locking device. The outer crown is connected with the artificial tooth body, the screw locking device comprises a screw, a groove arranged on the contact surface of the inner crown and a bulge arranged on the contact surface of the outer crown, and the bulge is matched with the groove in shape. According to the utility model, the inner crown and the outer crown are connected through the screws to provide stronger retention force, so that the crown is suitable for the condition requiring long-term stability; and the bulges or the grooves matched in shape are arranged on the contact surfaces of the inner crown and the outer crown, so that the contact area of the inner crown and the outer crown can be increased, and a more stable locking effect is provided.

Description

Technical Field

[0001] The utility model relates to the technology of tooth correction, and more specifically, to a telescopic crown denture. Background Art

[0002] A telescopic crown denture is a denture including a telescopic crown as a retainer. The telescopic crown retainer is composed of an inner crown and an outer crown. The inner crown is cemented on the abutment tooth or the denture base, and the outer crown is connected with other components of the denture as a whole. The denture generates a retention force through the fitting between the inner crown and the outer crown, so that the denture obtains good retention and stability. The support of the denture is jointly borne by the abutment tooth or the abutment tooth and the tissue under the denture base.

[0003] Since the existing telescopic crown system cements the inner layer crown on the abutment tooth or the denture base, and the outer layer crown is placed inside the denture, and the denture is retained by the friction force generated by the tight fit between the inner and outer crowns, the structure is not stable enough. During use, the outer crown of the telescopic crown is prone to shaking up and down, resulting in serious wear between the outer crown and the inner crown, short service life, and poor economy.

[0004] The utility model patent document with the patent application number CN201922421633 discloses an anti-loosening telescopic crown denture, which includes an abutment tooth, an inner crown and an outer crown. The outer ring of the abutment tooth is bonded to the inner ring of the inner crown, the outer crown covers the inner crown, an anti-slip layer is provided between the inner crown and the outer crown, a first clamping component connected to the anti-slip layer is provided on the inner side of the outer crown, and a second clamping component is provided on the outer side of the anti-slip layer. The first clamping component cooperates with the second clamping component, and the anti-slip layer is provided with a guiding component for guiding the first clamping component. Although this technical solution uses the first clamping component and the second clamping component to be clamped together, so as to stably fix the outer crown on the outer peripheral side of the anti-slip layer. However, this prior art adds an anti-slip layer, a first clamping component and a second clamping component, the structure is relatively complex, and the use of the clamping method still has the disadvantage that the inner and outer crowns fall off and separate under the action of external force. Summary of the Utility Model

[0005] Aiming at the shortcomings of the prior art, the main purpose of the utility model is to provide a telescopic crown denture structure to solve the problem of unstable connection between the outer crown and the inner crown in the telescopic crown denture.

[0006] To achieve the above purpose, the technical solution of the utility model is: a telescopic crown denture structure, including a telescopic crown, artificial tooth bodies, and a denture base. The telescopic crown is arranged on the denture base, the artificial tooth bodies cover the telescopic crown. The telescopic crown includes an inner crown and an outer crown. The inner crown is connected to the denture base, the inner crown is connected to the outer crown through a screw locking device, the outer crown is connected to the artificial tooth bodies, and the screw locking device includes a screw, a groove provided on the contact surface of the inner crown, and a protrusion provided on the contact surface of the outer crown. The shapes of the protrusion and the groove match.

[0007] Preferably, the protrusions or grooves are evenly distributed in the circumferential direction on the contact surface to ensure uniform pressure generated by the screw during installation, thereby reducing the risk of loosening.

[0008] Preferably, at least two or more telescopic crowns are provided on the denture base, a first connecting body is provided between the telescopic crowns, and a second connecting body is provided at the rear of the denture base; through the arrangement of the first connecting body and the second connecting body, the function of dispersing pressure is achieved, making the entire denture structure more stable and firm.

[0009] Preferably, the second connecting body is an arc-shaped component that is wide at both ends and narrow in the middle.

[0010] Preferably, a buffer layer is provided between the inner crown and the outer crown.

[0011] Compared with the prior art, the present utility model connects the inner crown and the outer crown through screws to provide stronger retention force, which is suitable for situations requiring long-term stability; and by providing protrusions or grooves with matching shapes on the contact surface between the inner crown and the outer crown, the contact area between the inner crown and the outer crown can be increased, providing a more stable locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following will describe in detail the structure and its beneficial technical effects of the present utility model in conjunction with the drawings and specific embodiments.

[0013] Figure 1 is a schematic structural view of the present utility model.

[0014] Figure 2 is a schematic structural view of the telescopic crown of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the invention purpose, technical solution and its beneficial technical effects of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are only for explaining the present utility model and not for limiting the present utility model.

[0016] Please refer to Figure 1 and Figure 2, the telescopic crown denture structure of this embodiment includes a telescopic crown 1, artificial tooth bodies 2, and a base 3. The telescopic crown 1 is provided on the base 3, the artificial tooth bodies 2 are coated on the telescopic crown 1. The telescopic crown 1 includes an inner crown 4 and an outer crown 5. The inner crown 4 is connected to the base 3, the inner crown 4 is connected to the outer crown 5 through a screw locking device 6, the outer crown 5 is connected to the artificial tooth bodies 2. The screw locking device 6 includes a screw 7 and a groove 12 provided on the contact surface of the inner crown and a protrusion 11 provided on the contact surface of the outer crown. The shape of the protrusion 11 matches that of the groove 12; a buffer layer 10 can also be provided between the inner crown 4 and the outer crown 5. The utility model connects the inner crown 4 and the outer crown 5 through the screw 7 to provide stronger retention force, which is suitable for situations requiring long-term stability; and the groove 12 on the contact surface of the inner crown and the protrusion 11 on the contact surface of the outer crown can increase the contact area between the inner crown and the outer crown and provide a more stable locking effect.

[0017] The protrusion 11 or the groove 12 is evenly distributed in the circumferential direction on the contact surface to ensure uniform pressure generated when the screw is installed, thereby reducing the risk of loosening. At least two or more telescopic crowns are provided on the base 3, a first connecting body 8 is provided between the telescopic crowns, and a second connecting body 9 is provided at the rear of the base 3. The second connecting body 9 is an arc-shaped member with wide ends and a narrow middle. Through the settings of the first connecting body 8 and the second connecting body 9, the function of dispersing pressure is achieved, making the entire denture structure more stable and firm.

[0018] According to the disclosure and teachings of the above specification, those skilled in the art of the utility model can also make appropriate changes and modifications to the above embodiments. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the utility model.

Claims

1. A telescopic crown denture structure, comprising a telescopic crown, artificial tooth bodies, and a base, characterized in that, The sleeve crown is provided on the base, the artificial tooth body is covered on the sleeve crown, the sleeve crown includes an inner crown and an outer crown, the inner crown is connected to the base, the inner crown is connected to the outer crown through a screw locking device, the outer crown is connected to the artificial tooth body, the screw locking device includes a screw and a groove provided on the contact surface of the inner crown and a protrusion provided on the contact surface of the outer crown, and the shapes of the protrusion and the groove match each other.

2. The telescopic crown denture structure according to claim 1, characterized in that, The protrusion or the groove is distributed circumferentially on the contact surface.

3. The telescopic crown denture structure according to claim 1, characterized in that, At least two or more sleeve crowns are provided on the base, a first connecting body is provided between the sleeve crowns, and a second connecting body is provided at the rear part of the base.

4. The telescopic crown denture structure according to claim 3, characterized in that, The second connecting body is an arc-shaped member with wide ends and a narrow middle.

5. The telescopic crown denture structure according to claim 1, wherein, A buffer layer is provided between the inner crown and the outer crown.

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