A lithium disilicate-based glass-ceramic anterior tooth restoration bridge structure

Abstract

The utility model relates to a related technical field of mouth cavity repair especially a lithium disilicate base glass ceramic anterior tooth repair bridge structure, including bridge body, the lateral edge of bridge body is connected with connecting seat, the inside of connecting seat is provided with clamping assembly, the inside of connecting seat is installed with abutment through clamping assembly, the side surface of abutte is provided with first nest hole, the surface of abutte is provided with second nest hole, the surface of bridge body and connecting seat is provided with auxiliary assembly. This lithium disilicate base glass ceramic anterior tooth repair bridge structure takes lithium disilicate base glass ceramic as core material, and its excellent mechanical strength and biocompatibility provide reliable foundation for overall structure, through the synergistic effect of multiple clamping plate encircling clamping, nest hole mechanical lock and elastic band pre-tightening adhesive bonding, the retention of abutment is enhanced, even when the abutment tooth tissue defect is more or the periodontal condition is poorer, reliable fixation can be provided, and the stability, the aesthetic property and the oral cavity function after repair are considered simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of oral restoration technology, and in particular to a lithium disilicate-based glass-ceramic anterior tooth restoration bridge structure. Background Technology

[0002] Prosthodontics is an important branch of dentistry, referring to the use of artificial materials to fabricate restorations to repair tooth defects, missing teeth, and maxillofacial tissue defects caused by dental caries, trauma, periodontal disease, congenital developmental abnormalities, etc., in order to restore the normal shape and function of the oral cavity, such as chewing, speech, and aesthetics, while protecting oral tissue health and improving the patient's quality of life. It encompasses various techniques such as fixed restorations, removable partial prostheses, complete dentures, and implant restorations. A personalized restoration plan must be developed based on the patient's specific oral condition. However, existing resin-fiber periodontal splint-type bonded bridges have shortcomings in material strength, aesthetic stability, applicability, installation difficulty, and durability, making it difficult to meet the needs of anterior tooth restoration. Therefore, a lithium disilicate-based glass-ceramic anterior tooth restoration bridge structure is particularly needed.

[0003] Chinese Patent CN222623121U, published on March 18, 2025, discloses a resin fiber periodontal splint-type bonded bridge that can repair missing anterior teeth. This device, through splint components and auxiliary components mounted on the bridge body, improves the stability of the bridge during installation. Simultaneously, the auxiliary components are bonded to the abutment teeth on the side of the bridge, further reducing the movement of the bridge and surrounding teeth, thus improving the fixation effect of the bridge and the stabilization effect of loose abutment teeth. However, the resin fiber material is prone to wear, deformation, and even breakage when subjected to the incisive forces of the anterior teeth over a long period, especially in patients with a strong occlusal habit, potentially limiting its lifespan. Furthermore, since the splint components and auxiliary components rely on occlusion and lateral bonding with the abutment teeth, the occlusion stability and bonding strength will significantly decrease in cases with significant tooth tissue loss or poor periodontal conditions, making it difficult to provide reliable retention. Therefore, the applicable population is relatively narrow. Utility Model Content

[0004] The purpose of this invention is to provide a lithium disilicate-based glass-ceramic anterior dental bridge structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium disilicate-based glass-ceramic anterior dental restoration bridge structure, comprising a bridge body, a connecting seat connected to the side of the bridge body, a clamping component provided on the inner side of the connecting seat, an abutment tooth installed inside the connecting seat through the clamping component, a first cavity opened on the side of the abutment tooth, a second cavity opened on the surface of the abutment tooth, and auxiliary components provided on the surfaces of the bridge body and the connecting seat; The clamping assembly includes a first clamping plate disposed inside the connecting seat, a second clamping plate disposed inside the connecting seat, a third clamping plate disposed inside the connecting seat, a fourth clamping plate disposed inside the connecting seat, a fifth clamping plate disposed inside the connecting seat, and a sixth clamping plate disposed inside the connecting seat. A connecting body connects adjacent sets of clamping plates. An elastic buffer layer is disposed inside the first, second, third, fourth, fifth, and sixth clamping plates.

[0006] Preferably, the first clamping plate and the sixth clamping plate are symmetrically distributed at both ends of the inner side of the connecting seat, and the second clamping plate, the third clamping plate, the fourth clamping plate and the fifth clamping plate are evenly distributed between the first clamping plate and the sixth clamping plate, and the distance between two adjacent sets of clamping plates is 1mm to 2mm.

[0007] Preferably, the connector adopts an arc-shaped elastic structure, and the connector and the adjacent first clamping plate, second clamping plate, third clamping plate, fourth clamping plate, fifth clamping plate and sixth clamping plate are all integrally molded. The thickness of the connector is 1 / 3 to 1 / 2 of the thickness of the clamping plate.

[0008] Preferably, the thickness of the elastic buffer layer is 0.2mm to 0.5mm, and the surface of the elastic buffer layer away from the clamping plate is provided with micron-level anti-slip texture, which is distributed in a grid pattern.

[0009] Preferably, the inner sides of the first, second, third, fourth, fifth, and sixth clamping plates are provided with protrusions that are adapted to the shape of the holes at the positions corresponding to the first and second holes, and the protrusions are embedded in the first and second holes.

[0010] Preferably, the auxiliary component includes an elastic band connected to the side of the housing, an elastic hinge is provided at the connection point of the elastic band, and medical silicone is provided on the surface of the elastic band that mates with the abutment tooth.

[0011] Preferably, the elastic band adopts a segmented structure, and each segment is provided with an elastic hinge. The maximum rotation angle of the elastic hinge is 45°, and the thickness of the medical silicone on the mating surface of the elastic band and the abutment tooth is 0.2mm to 0.4mm. The surface of the medical silicone is provided with an annular anti-slip groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This lithium disilicate-based glass-ceramic anterior dental bridge structure uses lithium disilicate-based glass-ceramic as the core material. Its excellent mechanical strength and biocompatibility provide a reliable foundation for the overall structure. At the same time, it has optical properties close to those of natural teeth, ensuring the aesthetics of the anterior teeth after restoration.

[0013] 2. This lithium disilicate-based glass-ceramic anterior dental bridge structure can enhance the retention of the abutment teeth through the synergistic effect of multi-splice circumferential clamping, cavity mechanical locking, and elastic band pre-tightening bonding. It can provide reliable fixation even when there are many defects in the abutment tooth structure or poor periodontal conditions, thus expanding the applicable population. At the same time, it takes into account the stability, aesthetics, and oral function after restoration. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of the present utility model; Figure 2 This is a schematic diagram of the clamping component structure of this utility model; Figure 3 This is a schematic diagram of the abutment tooth structure of this utility model from the side. Figure 4 This is a schematic diagram of the auxiliary component structure of this utility model.

[0015] In the diagram: 1. Bridge body; 2. Connector; 3. Clamping assembly; 301. First clamping plate; 302. Second clamping plate; 303. Third clamping plate; 304. Fourth clamping plate; 305. Fifth clamping plate; 306. Sixth clamping plate; 307. Connector; 308. Elastic buffer layer; 4. Abutment tooth; 5. First cavity; 6. Second cavity; 7. Auxiliary assembly; 701. Elastic band; 702. Elastic hinge; 703. Medical silicone. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: a lithium disilicate-based glass-ceramic anterior dental restoration bridge structure, including a bridge body 1, a connecting seat 2 connected to the side of the bridge body 1, a clamping component 3 provided on the inner side of the connecting seat 2, an abutment tooth 4 installed inside the connecting seat 2 through the clamping component 3, a first cavity 5 opened on the side of the abutment tooth 4, a second cavity 6 opened on the surface of the abutment tooth 4, and auxiliary components 7 provided on the surfaces of the bridge body 1 and the connecting seat 2; The clamping assembly 3 includes a first clamping plate 301 disposed inside the connecting seat 2. A second clamping plate 302, a third clamping plate 303, a fourth clamping plate 304, a fifth clamping plate 305, and a sixth clamping plate 306 are also disposed inside the connecting seat 2. A connecting body 307 connects adjacent sets of clamping plates. Both the fifth clamping plate 305 and the sixth clamping plate 306 have an elastic buffer layer 308 inside. Through the clamping assembly 3, when the connecting seat 2 and the base tooth 4 are installed, the first clamping plate 301, the second clamping plate 302, the third clamping plate 303, the fourth clamping plate 304, the fifth clamping plate 305, and the sixth clamping plate 306 form a clamping structure surrounding the base tooth 4 under the connection of the connecting body 307. The connecting body 307 between adjacent clamping plates adopts an arc-shaped elastic structure, possessing a certain deformation capacity. When the base tooth 4 enters the connecting seat 2... When the tooth is tilted, each splint will adaptively open according to the outline of the abutment tooth 4. The connector 307 will then undergo elastic deformation, generating a rebound force pointing towards the abutment tooth 4, causing the splint to fit tightly against the surface of the abutment tooth 4. At the same time, the elastic buffer layer 308 inside each splint is in direct contact with the abutment tooth 4. Its medical-grade silicone material has good elasticity and deformation capacity, which can further fill the tiny gaps between the splint and the abutment tooth 4, enhancing the fit. The micron-level anti-slip texture on the surface of the elastic buffer layer 308 can increase friction and prevent the splint from slipping between the abutment tooth 4. Relative sliding occurs. In addition, the first clamping plate 301 and the sixth clamping plate 306 are provided with matching protrusions in the first recess 5 on the side of the abutment tooth 4, and the third clamping plate 303 and the fourth clamping plate 304 are provided with matching protrusions in the second recess 6 on the surface of the abutment tooth 4. These protrusions and protrusions are embedded in the recesses to form a mechanical locking structure. They work together with the elastic clamping force of the clamping plates to achieve a firm fixation of the abutment tooth 4. This not only ensures the stability of the connection, but also reduces the damage to the abutment tooth 4 by buffering the impact of external forces through the deformation of the elastic buffer layer and the connector.

[0018] Furthermore, the first clamping plate 301 and the sixth clamping plate 306 are symmetrically distributed at both ends of the inner side of the connecting seat 2. The second clamping plate 302, the third clamping plate 303, the fourth clamping plate 304, and the fifth clamping plate 305 are evenly distributed between the first clamping plate 301 and the sixth clamping plate 306, and the distance between adjacent sets of clamping plates is 1mm to 2mm. Through the arrangement of the first clamping plate 301, the second clamping plate 302, the third clamping plate 303, the fourth clamping plate 304, the fifth clamping plate 305, and the sixth clamping plate 306, a circumferential clamping can be formed from multiple directions of the abutment tooth 4, evenly dispersing the clamping force and avoiding excessive local pressure that could damage the abutment tooth 4. The symmetrical and even distribution ensures the balance of the clamping, prevents the abutment tooth 4 from shifting under force, and improves the overall stability of the clamping.

[0019] Furthermore, the connector 307 adopts an arc-shaped elastic structure, and the connector 307 and the adjacent first clamping plate 301, second clamping plate 302, third clamping plate 303, fourth clamping plate 304, fifth clamping plate 305 and sixth clamping plate 306 are all integrally molded. The thickness of the connector 307 is 1 / 3 to 1 / 2 of the thickness of the clamping plate. Through the setting of the connector 307, the arc-shaped elastic structure allows it to generate moderate deformation when the abutment tooth 4 enters, providing elastic support for the opening of the clamping plate, while generating a rebound force to ensure that the clamping plate and the abutment tooth 4 fit tightly. The integral molding design enhances the connection strength between the connector and the clamping plate and avoids breakage at the connection point. The thinner thickness design ensures the elastic performance of the connector, allowing it to deform flexibly and provide sufficient connection force.

[0020] Furthermore, the elastic buffer layer 308 has a thickness of 0.2mm to 0.5mm, and the surface of the elastic buffer layer 308 away from the splint is provided with micron-level anti-slip textures. The anti-slip textures are distributed in a grid pattern. Through the setting of the elastic buffer layer 308, the appropriate thickness allows it to fill the gap between the splint and the abutment tooth 4 without affecting the tightness of the clamping due to excessive thickness. The grid-like anti-slip textures increase the friction with the surface of the abutment tooth 4, effectively preventing relative sliding between the splint and the abutment tooth 4. At the same time, the elastic properties of the medical silicone material can buffer external impacts and reduce hard damage to the abutment tooth 4.

[0021] Furthermore, the inner sides of the first clamping plate 301, the second clamping plate 302, the third clamping plate 303, the fourth clamping plate 304, the fifth clamping plate 305, and the sixth clamping plate 306 are all provided with protrusions that are adapted to the shape of the holes, corresponding to the positions of the first hole 5 and the second hole 6. The protrusions are embedded in the first hole 5 and the second hole 6. Through the provision of the first hole 5 and the second hole 6, the cooperation between the hole and the protrusion forms a mechanical locking structure, which greatly improves the connection firmness between the clamping plate and the abutment tooth 4 and prevents the repair bridge from loosening or falling off during use. At the same time, the position distribution of the holes matches the clamping position of the clamping plate, so that the locking point and the clamping force application point cooperate with each other, further enhancing the stability of the overall structure.

[0022] Furthermore, the auxiliary component 7 includes an elastic band 701 connected to the side of the housing 1. An elastic hinge 702 is provided at the connection point of the elastic band 701. Medical silicone 703 is provided on the surface of the elastic band 701 that contacts the abutment tooth 4. Through the auxiliary component 7, after the bridge 1 is installed, the elastic hinge 702 provides the elastic band 701 with multiple degrees of freedom of rotation, allowing it to adaptively adjust its angle according to the lateral morphology of the abutment tooth 4, ensuring alignment between the elastic band 701 and the surface of the abutment tooth 4. The elastic deformation capability of the elastic band 701 generates a pre-tightening force in the direction of the abutment tooth 4, causing the inner medical silicone 703 to tightly adhere to the abutment tooth 4. The soft properties of the silicone fill tiny gaps, enhancing the initial fit while avoiding damage to the abutment tooth from hard contact. At this time, the adhesive on the inner side of the elastic band 701 contacts the surface of the abutment tooth 4. Under the action of the pre-tightening force, the adhesive can fully wet the tiny pits and grooves on the surface of the abutment tooth. As a stable chemical bond is formed during the curing process, the medical silicone 703, positioned between the elastic band and the abutment tooth, avoids material compatibility issues caused by direct contact between the adhesive and the elastic band. Simultaneously, its mesh structure provides space for the adhesive, preventing excess adhesive from overflowing and affecting aesthetics or irritating the gums. The continuous pre-tightening force of the elastic band 701 ensures that the adhesive maintains close contact with the abutment tooth 4 throughout the curing process, enhancing bond strength. The elastic hinge 702, through angle compensation, prevents uneven adhesive distribution due to the tilt or shape differences of the abutment tooth 4, ensuring uniform bonding. Ultimately, the chemical bond strength of the adhesive, the elastic pre-tightening force of the elastic band 701, and the frictional resistance of the medical silicone 703 work synergistically to significantly enhance the connection strength between the auxiliary component 7 and the abutment tooth 4, providing stable lateral support for the bridge 1, further reducing the wobble between the bridge 1 and the abutment tooth 4, and extending the service life of the restored bridge.

[0023] Furthermore, the elastic band 701 adopts a segmented structure, with each segment connected by an elastic hinge 702. The maximum rotation angle of the elastic hinge 702 is 45°. The thickness of the medical silicone 703 on the mating surface of the elastic band 701 and the abutment tooth 4 is 0.2mm to 0.4mm. The surface of the medical silicone 703 has an annular anti-slip groove. Through the design of the elastic hinge 702 and the medical silicone 703, the segmented elastic band 701, in conjunction with the 45° rotatable elastic hinge 702, can more flexibly adapt to the complex surface curvature and morphological changes of the abutment tooth 4. Even if the abutment tooth 4 is tilted or uneven, each segment of the elastic band 701 can still... The rotation of the elastic hinge 702 enables independent fitting, significantly improving the fitting accuracy with the abutment tooth surface. The 0.2mm to 0.4mm thick medical silicone 703 ensures a certain elastic buffering capacity without weakening the pre-tightening force transmission of the elastic band due to excessive thickness. The annular anti-slip groove on the surface not only increases the friction between the abutment tooth 4 and prevents the elastic band 701 from slipping, but also provides storage space for the adhesive, allowing excess adhesive to be contained in the groove and preventing it from overflowing to the gums or tooth surface and affecting aesthetics. At the same time, it enhances the bonding force between the adhesive and the silicone layer, further improving the stability and reliability of the connection between the auxiliary component 7 and the abutment tooth 4.

[0024] Working Principle: This restorative bridge uses lithium disilicate-based glass-ceramic as its core material. Its excellent mechanical strength and biocompatibility provide a reliable foundation for the overall structure. It also possesses optical properties close to natural teeth, ensuring aesthetics after anterior tooth restoration. During installation, the bridge body 1 connects to the abutment tooth 4 via the side connector 2. The clamping assembly 3 and auxiliary assembly 7 work together to achieve stable fixation. When the clamping assembly 3 is in operation, the first to sixth clamps, connected by the connector 307, form a clamping structure surrounding the abutment tooth 4. The arc-shaped elastic structure of the connector 307... When the abutment tooth 4 enters the inner side of the connector 2, it deforms, causing the clamp to open adaptively. Subsequently, the rebound force forces the clamp to tightly adhere to the surface of the abutment tooth. The clamp, made of lithium disilicate-based glass ceramic, possesses sufficient hardness to ensure stable transmission of clamping force. Meanwhile, the 0.2mm–0.5mm thick elastic buffer layer 308 on the inner side fills the gaps, and the grid-like anti-slip texture enhances friction and prevents relative slippage. Simultaneously, the protrusions on the inner side of the clamp embed into the first and second recesses 5 and 6 of the abutment tooth 4, forming a mechanical lock. Together with the elastic clamping force, this achieves a secure fixation. Furthermore, the lithium disilicate-based… The rigidity of the glass-ceramic material complements the elasticity of the connector and the elastic buffer layer, buffering external impacts and reducing damage to the abutment tooth. The auxiliary component 7 further enhances the fixation effect. The segmented elastic band 701 adjusts its angle via the elastic hinge 702 to adapt to the complex shape of the abutment tooth 4. The pre-tightening force generated by its own elasticity ensures that the inner medical silicone 703 fits tightly against the abutment tooth. The 0.2mm to 0.4mm thick silicone layer ensures buffering without weakening the pre-tightening force. The annular anti-slip groove increases friction and accommodates excess adhesive. Under the action of the pre-tightening force, the adhesive on the inner side of the elastic band is fully impregnated. On the surface of the abutment tooth, after curing, a chemical bond is formed. This bond works synergistically with the pre-tightening force of the elastic band and the frictional force of the silicone to provide lateral support for the bridge body 1. Throughout the process, the bridge body 1 and the connector 2, made of lithium disilicate glass ceramic, resist the chewing force with their high strength. Their stability, combined with the mechanical fixation of the clamping components and the chemical bonding of the auxiliary components, achieves precise restoration of the missing anterior teeth. This ensures the long-term stability of the structure and maintains a natural appearance and normal oral function. This completes the process of using a lithium disilicate glass ceramic anterior dental restoration bridge structure.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium disilicate-based glass-ceramic anterior dental prosthesis bridge structure, comprising a bridge body (1), characterized in that: The bridge body (1) is connected to a connecting seat (2) on its side. A clamping component (3) is provided on the inner side of the connecting seat (2). An abutment tooth (4) is installed inside the connecting seat (2) through the clamping component (3). A first cavity (5) is opened on the side of the abutment tooth (4). A second cavity (6) is opened on the surface of the abutment tooth (4). An auxiliary component (7) is provided on the surface of the bridge body (1) and the connecting seat (2). The clamping assembly (3) includes a first clamping plate (301), which is disposed on the inner side of the connecting seat (2). A second clamping plate (302), a third clamping plate (303), a fourth clamping plate (304), a fifth clamping plate (305), and a sixth clamping plate (306) are also disposed on the inner side of the connecting seat (2). A connecting body (307) is connected between two adjacent sets of clamping plates. An elastic buffer layer (308) is disposed inside the first clamping plate (301), the second clamping plate (302), the third clamping plate (303), the fourth clamping plate (304), the fifth clamping plate (305), and the sixth clamping plate (306).

2. The lithium disilicate-based glass-ceramic anterior dental bridge structure according to claim 1, characterized in that: The first clamping plate (301) and the sixth clamping plate (306) are symmetrically distributed at both ends of the inner side of the connecting seat (2). The second clamping plate (302), the third clamping plate (303), the fourth clamping plate (304) and the fifth clamping plate (305) are evenly distributed between the first clamping plate (301) and the sixth clamping plate (306), and the distance between two adjacent sets of clamping plates is 1mm to 2mm.

3. The lithium disilicate-based glass-ceramic anterior dental bridge structure according to claim 1, characterized in that: The connector (307) adopts an arc-shaped elastic structure, and the connector (307) and the adjacent first clamping plate (301), second clamping plate (302), third clamping plate (303), fourth clamping plate (304), fifth clamping plate (305) and sixth clamping plate (306) are all integrally molded. The thickness of the connector (307) is 1 / 3 to 1 / 2 of the thickness of the clamping plate.

4. The lithium disilicate-based glass-ceramic anterior dental bridge structure according to claim 1, characterized in that: The thickness of the elastic buffer layer (308) is 0.2mm to 0.5mm, and the surface of the elastic buffer layer (308) away from the clamping plate is provided with micron-level anti-slip texture, which is distributed in a grid pattern.

5. The lithium disilicate-based glass-ceramic anterior dental bridge structure according to claim 1, characterized in that: The inner sides of the first clamping plate (301), the second clamping plate (302), the third clamping plate (303), the fourth clamping plate (304), the fifth clamping plate (305) and the sixth clamping plate (306) are provided with protrusions that are adapted to the shape of the holes, and the protrusions are embedded in the first hole (5) and the second hole (6).

6. The lithium disilicate-based glass-ceramic anterior dental bridge structure according to claim 1, characterized in that: The auxiliary component (7) includes an elastic band (701), which is connected to the side of the bridge body (1). An elastic hinge (702) is provided at the connection of the elastic band (701), and medical silicone (703) is provided on the surface of the elastic band (701) that is in contact with the abutment tooth (4).

7. The lithium disilicate-based glass-ceramic anterior dental bridge structure according to claim 6, characterized in that: The elastic band (701) adopts a segmented structure, and each segment is provided with an elastic hinge (702). The maximum rotation angle of the elastic hinge (702) is 45°, and the thickness of the medical silicone (703) on the mating surface of the elastic band (701) and the abutment tooth (4) is 0.2mm to 0.4mm. The surface of the medical silicone (703) is provided with an annular anti-slip groove.

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