Reinforced all-ceramic crown bridge capable of retaining large-area tooth defect residual root

Abstract

The utility model belongs to the field of dentistry, solves the problem of improving the stability, and provides a reinforced all-ceramic crown bridge capable of retaining large-area tooth defect residual roots, which comprises a crown bridge and a veneer directly connected to the side surface of the crown bridge, the veneer is provided with a first wing and a second wing matched with the surface shape of adjacent teeth, and the first wing and the second wing are arranged in parallel. The root part of the first wing and the root part of the second wing are directly connected with the crown bridge, the first wing and the second wing are provided with gluing surfaces, the gluing surfaces are used for smearing adhesive so as to enable the veneering to be attached to the surfaces of adjacent teeth, and the gluing surfaces are provided with glue containing grooves which are concave inwards from the surfaces. The veneer is connected to the crown bridge, and the all-ceramic crown bridge with the wing plates is bound with front and rear teeth due to the bonding of the wing plates while restoring the appearance of a tooth body, so that the fracture resistance of residual roots and crowns can be improved, and the purpose of retaining the residual roots and crowns for a long time can be achieved. As the wing plate is bonded and bound with the front and rear teeth, the preparation of the front and rear teeth is less (tooth preparation can be carried out without local anesthesia), and a patient does not have obvious discomfort in the treatment period.

Description

Technical Field

[0001] The utility model belongs to the field of dentistry and relates to a tooth caries repair material, in particular to a reinforced all-ceramic crown bridge for retaining a large area of ​​tooth defect residual root. Background Art

[0002] When the crown of a tooth has been decayed or defective over a large area (about 3 or nearly 4 sides are defective or decayed), and the residual root has no crown, the root surface is flat with the gum or within 3mm below the gum, and the periodontium is normal, the root is stable, there is no obvious alveolar bone absorption and no pulp cavity floor defect, it is often recommended clinically to extract the tooth and then restore it with implants, fixed bridges or removable dentures. This increases the cost of treatment and prolongs the treatment cycle. Some patients refuse to extract the tooth because the residual roots and crowns are not loose, and because they are told that the long-term effect of later restoration is not good, they are unwilling to restore the crown shape of the affected tooth, so the chewing function and aesthetic function cannot be restored. Some patients insist on retaining the residual roots and crowns, and undergo root canal treatment + post crown restoration, but because their own crowns are too defective or there is no crown, the later restoration is not long-lasting. Utility Model Content

[0003] The utility model aims to provide a reinforced all-ceramic crown bridge which can retain a large area of ​​tooth defect and residual root, thereby solving the problem of how to improve the stability of the all-ceramic crown bridge.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides a reinforced all-ceramic crown bridge for retaining residual roots with large-area tooth defects, comprising a crown bridge and a veneer directly connected to the side of the crown bridge, wherein the veneer has a first wing and a second wing that match the shape of the surface of the adjacent tooth, and the roots of the first wing and the second wing are directly connected to the crown bridge, and the first wing and the second wing have a glue-coated surface, and the glue-coated surface is used to apply adhesive to make the veneer fit the surface of the adjacent tooth, and the glue-coated surface has a glue-receiving groove concave from the surface.

[0006] Preferably, the glue containing groove is dot-shaped, and there are multiple glue containing grooves distributed on the glue coating surface.

[0007] Furthermore, the glue containing grooves are distributed in both the vertical and horizontal directions of the teeth.

[0008] Preferably, the glue containing groove is long and narrow and extends vertically along the tooth.

[0009] Furthermore, there are multiple glue containing grooves, which are distributed in the transverse direction of the tooth.

[0010] Furthermore, one end of the glue containing groove extends to the edge of the veneer.

[0011] Furthermore, both ends of the glue containing groove extend to the edge of the veneer.

[0012] Preferably, the full crown in the crown and bridge is integrated with the post and core.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] This reinforced all-ceramic crown and bridge, designed to preserve large tooth defects and residual roots, features a veneer attached to the crown and bridge. The all-ceramic crown and bridge with wings restores the tooth's contour while bonding the wing plates to the anterior and posterior teeth. This increases the fracture resistance of the residual root and crown, ensuring long-term preservation. Because the wings bond the wing plates to the anterior and posterior teeth, minimal tooth preparation is required (no local anesthesia is required), and patients experience no significant discomfort during treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure's appearance;

[0018] Figure 3 is a schematic structural diagram of Example 1;

[0019] Figure 4 is a schematic structural diagram of Example 2;

[0020] Figure 5 is a schematic structural diagram of Example 3;

[0021] The description of the accompanying drawings is as follows:

[0022] 1. Crown and bridge; 2. Veneer; 21. First wing; 22. Second wing; 23. Glue coating surface; 24. Glue receiving groove; 3. Post and core. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some 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 making any creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1The figure shows a reinforced all-ceramic crown and bridge that retains a large area of ​​tooth root defect. The post and core 3 are connected to the residual roots of teeth A and B. The tooth between the two residual roots is missing.

[0025] The core components of the two posts and cores 3 are wrapped with all-ceramic crowns to form a crown bridge 1. Since the bonding strength between the posts and cores 3 and the residual root is not strong enough, the crown bridge 1 is not stable enough and may not be used for a long time.

[0026] A veneer 2 is attached to the side of the crown bridge 1. The veneer 2 is bonded to the adjacent teeth, thereby increasing the stability of the crown bridge 1. The veneer 2 has a first wing 21 and a second wing 22. The first wing 21 and the second wing 22 match the surface shape of the adjacent teeth to bond to the adjacent teeth. The roots of the first wing 21 and the second wing 22 are directly connected to the crown bridge 1. The resulting reinforced all-ceramic crown bridge is shown in the front view. Figure 2 .

[0027] Example 1

[0028] like Figure 3 As shown (viewed from above or below, or above if installed on the maxillary side), the first wing 21 and the second wing 22 have adhesive surfaces 23 for applying adhesive to align the veneer 2 with the adjacent tooth surface. Surfaces 23 also have a plurality of adhesive grooves 24, recessed from the surface. These grooves accommodate adhesive, increasing the bonding area and enhancing the bond strength between the veneer 2 and the adjacent tooth.

[0029] The adhesive grooves 24 are dot-shaped, i.e., small, approximately circular, with a curved bottom. Several adhesive grooves 24 are provided, distributed vertically (roughly in the direction of tooth growth) and horizontally (roughly in the direction of the tooth's occlusal surface) along the tooth to enhance bonding strength.

[0030] Example 2

[0031] like Figure 4 As shown, the difference from embodiment 1 is that the glue holding groove 24 is long and extends in the vertical direction of the tooth, which can increase the glue holding capacity. There are also multiple glue holding grooves 24, which are distributed in the transverse direction of the tooth.

[0032] Example 3

[0033] like Figure 5 As shown, unlike Example 2, the adhesive groove 24 extends to the edge of the veneer 2, which further increases the adhesive capacity and makes it easier to drain excess adhesive in the adhesive groove 24. In this example, both ends of the adhesive groove 24 extend to the edge of the veneer 2, or only one end can extend to the edge of the veneer 2.

[0034] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reinforced all-ceramic crown and bridge for retaining large-area tooth defect residual roots, characterized in that: The invention comprises a crown bridge (1) and a veneer (2) directly connected to the side of the crown bridge (1), wherein the veneer (2) has a first wing (21) and a second wing (22) that match the shape of the surface of the adjacent tooth, and the roots of the first wing (21) and the second wing (22) are directly connected to the crown bridge (1), and the first wing (21) and the second wing (22) have a glue-coating surface (23), and the glue-coating surface (23) is used to apply glue so that the veneer (2) fits the surface of the adjacent tooth, and the glue-coating surface (23) has a glue-receiving groove (24) that is concave from the surface.

2. The reinforced all-ceramic crown and bridge for retaining large-area tooth defects and residual roots according to claim 1, characterized in that: The glue containing groove (24) is dot-shaped, and there are a plurality of the glue containing grooves (24) distributed on the glue coating surface (23).

3. The reinforced all-ceramic crown and bridge for retaining large-area tooth defects and residual roots according to claim 2, characterized in that: The glue containing grooves (24) are distributed in both the vertical and horizontal directions of the teeth.

4. The reinforced all-ceramic crown and bridge for retaining large-area tooth defects and residual roots according to claim 1, characterized in that: The glue containing groove (24) is long and strip-shaped and extends in the vertical direction of the tooth.

5. The reinforced all-ceramic crown and bridge for retaining large-area tooth defect and residual root according to claim 4, characterized in that: There are a plurality of glue containing grooves (24), which are distributed in the transverse direction of the tooth.

6. The reinforced all-ceramic crown and bridge for retaining large-area tooth defect and residual root according to claim 4, characterized in that: One end of the glue containing groove (24) extends to the edge of the veneer (2).

7. The reinforced all-ceramic crown and bridge for retaining residual roots of large-area tooth defects according to claim 4, characterized in that: Both ends of the glue containing groove (24) extend to the edge of the veneer (2).

8. The reinforced all-ceramic crown and bridge for retaining large-area tooth defect and residual root according to claim 1, characterized in that: The full crown in the crown bridge is combined with the post and core (3).

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