A space maintaining device for thin site of buccal bone plate after tooth extraction

Abstract

The utility model discloses a kind of space maintaining devices for adjacent tooth fixed type of buccal side bone plate thin site after tooth extraction, belong to oral cavity instrument field, contain adjacent tooth fixing assembly, support plate, connecting component;Retention base is adapted to the shape of adjacent tooth and is bonded and fixed, support plate is arranged between lip soft tissue and tooth extraction area gingival gap, connecting component connects support plate and retention base.This device blocks lip soft tissue lateral pressure by support plate, prevents alveolar bone absorption, uses adjacent tooth fixation without flap surgery to further reduce tissue damage, reduce infection, risk of rejection, dismount simply, avoid secondary injury, provide stable space for bone tissue regeneration.

Description

Technical Field

[0001] This utility model relates to the field of dental restoration medical device technology, specifically to a space maintenance device for adjacent teeth fixed at thin buccal bone plate sites after tooth extraction. Background Technology

[0002] In restorations at sites where the buccal bone plate is thin after tooth extraction, alveolar bone resorption is likely to occur. For example... Figure 1 As shown, the outer side of the tooth root is formed by the periodontal ligament, alveolar bone, and gingiva. After tooth extraction, a cavity exists, and the inner side of the alveolar bone loses its support. Under the lateral force of the labial and buccal muscles, the alveolar bone on the labial side is easily partially absorbed.

[0003] The commonly used solution is to augment the alveolar bone before or during implantation. Traditional space-maintaining methods have significant drawbacks:

[0004] 1) Bone augmentation involves significant trauma and causes obvious damage to surrounding tissues during the procedure.

[0005] 2) Bone augmentation leads to a significant increase in postoperative healing time, and the treatment cycle will be extended by 3 to 6 months.

[0006] 3) Space-maintaining components such as titanium mesh and titanium nails need to be placed inside the gums, which not only increases the complexity of the surgery, but may also lead to postoperative infection, tissue rejection and other risks.

[0007] 4) The removal of titanium mesh and titanium plates involves a large flapping range, resulting in severe secondary damage and significant discomfort during treatment. Utility Model Content

[0008] This utility model provides a space-maintaining device for adjacent teeth at thin buccal bone plate sites after tooth extraction, comprising:

[0009] The adjacent tooth fixation assembly includes retention bases respectively disposed on both sides of the extraction site. The bottom surface of the retention base is an arc surface adapted to the shape of the adjacent tooth and is used to fix it to the adjacent tooth by means of adhesive.

[0010] A support plate is placed in the gap between the soft tissue of the lip and the gingiva at the extraction site to block the pressure of the soft tissue of the lip on the gingiva at the extraction site.

[0011] The connecting component is fixedly connected to the support plate in the middle and connected to the retaining base at both ends.

[0012] Furthermore, the adjacent tooth fixing components, support plates, and connecting components are 3D printed or injection molded as a single unit.

[0013] Furthermore, the fixation base is equipped with ligation wing;

[0014] The connecting assembly includes a support connecting rod and a ligation fixing ring. The support connecting rod passes through the ligation side wing and is locked and fixed to the ligation side wing by the ligation fixing ring. The support plate is fixedly connected to the support connecting rod.

[0015] Furthermore, the support plate can be a 3D printed preform or a sheet structure that can be heated and shaped.

[0016] Furthermore, the support connecting rod is a flexible and bendable dental wire, which is welded to the support plate.

[0017] Furthermore, the retaining base is made of metal, and the bottom surface is provided with an uneven retaining mesh.

[0018] Furthermore, the retaining base mesh can be any of the following structures:

[0019] The porous sintered layer structure is formed by interconnected pores created by metal powder particles or metal fibers sintered on the bottom surface of the fixed base.

[0020] The mechanically machined textured structure has an array of grooves, blind holes, or dovetail grooves formed on the bottom surface of the retaining base;

[0021] The surface roughening structure is formed by sandblasting, acid etching, or laser etching to create a micro-irregular uneven surface on the bottom surface of the locating base.

[0022] Furthermore, the support plate is a perforated plate with numerous holes.

[0023] The main advantages of this utility model are:

[0024] 1) The device forms a physical barrier in the oral vestibule space through the support plate, which effectively blocks the lateral pressure of the lip soft tissue on the gingiva at the extraction site, so that the thin lateral bone plate at the extraction site can reduce external pressure during the healing period, thereby effectively preventing alveolar bone resorption.

[0025] 2) This device uses adjacent tooth fixation, eliminating the need for flap surgery and significantly reducing damage to surrounding tissues. Because the components do not enter the tissue, the risks of postoperative infection, tissue rejection, and material exposure are greatly reduced. The device is easy to disassemble, avoiding the secondary damage caused by extensive flap removal of foreign objects in traditional space-maintaining techniques. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram illustrating the principle that alveolar bone is prone to resorption after tooth extraction in existing technologies.

[0028] Figure 2 This is a schematic diagram of the installation of a space-maintaining device for adjacent teeth fixed at thin sites of buccal bone plate after tooth extraction, according to the present invention.

[0029] Figure 3 This is a schematic diagram of the installation of a space-maintaining device for adjacent teeth fixed at thin sites of buccal bone plate after tooth extraction, according to the present invention.

[0030] Figure 4 This is a schematic diagram of the support plate of this utility model blocking the soft tissue of the lip and the labial gingiva;

[0031] Figure 5 Schematic diagrams of three different structural forms of the retaining base mesh. Detailed Implementation

[0032] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0033] To fully understand this utility model, detailed steps and structures will be presented in the following description to illustrate the technical solution of this utility model. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0034] Reference Figure 2-4 As shown, this utility model provides a space maintenance device for adjacent teeth fixed at thin buccal bone plate sites after tooth extraction, including adjacent tooth fixing component 10, support plate 20, and connecting component 30.

[0035] The adjacent tooth fixation assembly 10 includes retention bases 11 respectively disposed on both sides of the extraction site. The bottom surface of the retention base 11 is an arc surface adapted to the shape of the adjacent tooth. The retention base is fixed to the adjacent tooth by adhesive, providing a stable support foundation for the support plate 20 and the connecting assembly 30.

[0036] The support plate 20 is placed in the oral vestibule space formed by the soft tissue of the lip and the gingiva of the extraction site, effectively blocking the lateral pressure exerted by the soft tissue of the lip on the gingiva of the extraction site during chewing or speech movements, thereby preventing the thin lateral bone plate below from being resorbed by pressure.

[0037] The connecting component 30 is fixedly connected to the support plate 20 in the middle and connected to the retention base 11 at both ends, thereby transferring the muscle load borne by the support plate 20 to the adjacent tooth abutment through the connecting component.

[0038] In an optional embodiment, the adjacent tooth fixation component 10, the support plate 20, and the connecting component 30 are 3D printed or injection molded as a single unit. Through integrated modeling (such as an anatomical model based on CBCT data), the connection gaps between components can be reduced, the overall mechanical strength and biocompatibility of the device can be improved, and the clinical wearing process of doctors can be simplified.

[0039] In an optional embodiment, the retention base 11 is provided with a ligation wing 12; the connecting assembly includes a support connecting rod 31 and a ligation fixing ring 32. The support connecting rod 31 passes through the ligation wing and connects to the retention base 11, and the ligation fixing ring 32 is used to lock and fix the support connecting rod 31 and the ligation wing 12. The support plate 20 is fixedly connected to the support connecting rod 31. It should be noted that the retention base 11 can directly adopt the clinically commonly used orthodontic bracket-type wing structure, and its tooth surface bonding method and technology are common knowledge in the art, and will not be described in detail here.

[0040] In an optional embodiment, the support plate 20 can be used as a 3D printed preform, the thickness and shape of which can be set according to the degree of bone plate defects, or it can be a medical-grade thermoplastic sheet structure that can be heated and shaped, so that doctors can make personalized fine adjustments on the spot according to the actual fullness of the alveolar ridge.

[0041] In an optional embodiment, the support connecting rod 31 is preferably dental stainless steel wire or nickel-titanium wire, which is connected to the support plate 20 by laser welding or resistance spot welding.

[0042] In an optional embodiment, the retaining base 11 is made of metal and has an uneven retaining bottom mesh on its bottom surface, which increases the bonding strength by increasing the surface area and mechanical interlocking force.

[0043] In an optional embodiment, the retaining base mesh is any of the following structures:

[0044] 1) A porous sintered layer structure, in which interconnected pores are formed by metal powder particles or metal fibers sintered on the bottom surface of the retaining base 11, such as... Figure 5 As shown in 'a';

[0045] 2) Mechanically machined textured structure, with an array of grooves, blind holes, or dovetail grooves formed on the bottom surface of the retaining base 11, such as... Figure 5 As shown in b;

[0046] 3) Surface roughening structure: Microscopic irregular uneven surfaces are formed on the bottom surface of the retaining base 11 through sandblasting, acid etching, or laser etching, such as... Figure 5 As shown in c in the figure.

[0047] In an optional embodiment, the support plate is a perforated plate with numerous holes, which reduces weight and provides comfort and breathability, thereby reducing the risk of inflammation caused by foreign objects covering the surface.

[0048] This invention uses the adjacent tooth fixing component 10 to fix the entire device to the abutment teeth on both sides of the extraction site, and utilizes the support plate 20 to construct a rigid shielding structure in the oral vestibule that conforms to the anatomical morphology of the buccal gingiva. This structure can effectively resist the dynamic radial pressure generated by the contraction of the buccal muscles after tooth extraction, thereby reducing the transmission of external loads to the thin buccal bone plate (such as...). Figure 4 As shown in the figure, this eliminates compressive bone resorption caused by external pressure. At the same time, the stable gap formed between the support plate 20 and the gingiva provides the necessary protected space for bone tissue organization and regeneration, ultimately achieving the goal of minimizing alveolar bone resorption and protecting the alveolar ridge morphology.

[0049] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A space-maintaining device for adjacent teeth at thin buccal bone plate sites after tooth extraction, characterized in that, include: The adjacent tooth fixation assembly includes retention bases respectively disposed on both sides of the extraction site. The bottom surface of the retention base is an arc surface adapted to the shape of the adjacent tooth and is used to fix it to the adjacent tooth by means of adhesive. A support plate is placed in the gap between the soft tissue of the lip and the gingiva at the extraction site to block the pressure of the soft tissue of the lip on the gingiva at the extraction site. The connecting component is fixedly connected to the support plate in the middle and connected to the retaining base at both ends.

2. The adjacent tooth fixed space maintenance device according to claim 1, characterized in that, The adjacent tooth fixing components, support plates, and connecting components are 3D printed or injection molded into one piece.

3. The adjacent tooth fixed space maintenance device according to claim 1, characterized in that, The fixation base is equipped with ligation wings; The connecting assembly includes a support connecting rod and a ligation fixing ring. The support connecting rod passes through the ligation side wing and is locked and fixed to the ligation side wing by the ligation fixing ring. The support plate is fixedly connected to the support connecting rod.

4. The adjacent tooth fixed space maintenance device according to claim 2, characterized in that, The support plate can be a 3D printed preform or a sheet structure that can be heated and shaped.

5. The adjacent tooth fixed space maintenance device according to claim 3, characterized in that, The support connecting rod is a flexible and bendable dental wire, which is welded to the support plate.

6. The adjacent tooth fixed space maintenance device according to claim 1, characterized in that, The base is made of metal and has an uneven base mesh on the bottom.

7. The adjacent tooth fixed space maintenance device according to claim 6, characterized in that, The retaining base mesh can be any of the following structures: The porous sintered layer structure is formed by interconnected pores created by metal powder particles or metal fibers sintered on the bottom surface of the retaining base. The mechanically machined textured structure has an array of grooves, blind holes, or dovetail grooves formed on the bottom surface of the retaining base; The surface roughening structure is formed by sandblasting, acid etching, or laser etching to create a micro-irregular uneven surface on the bottom surface of the locating base.

8. The adjacent tooth fixed space maintenance device according to claim 4, characterized in that, The support plate is a perforated plate with numerous holes.

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