A new crown structure

Abstract

The application provides a novel dental crown structure, which comprises an inner crown body, an outer porcelain sheet arranged on the inner crown body, and a connecting assembly arranged between the inner crown body and the outer porcelain sheet, wherein the connecting assembly comprises a connecting groove arranged on one side of the outer porcelain sheet close to the inner crown body, and a bonding layer arranged between the connecting groove and the inner crown body, the bonding layer is made of resin, and the inner crown body matches and extends into the connecting groove. The application forms a fixed connection between the inner crown body and the outer porcelain sheet by arranging the connecting assembly therebetween, thereby enhancing the connecting strength between the two, effectively dispersing and buffering stress, and effectively avoiding the problems of porcelain collapse and falling off under long-term stress, breaking the limitation of the traditional dental crown structure, greatly improving the service life and repair effect of the dental crown, having significant structural advantages and practical value, and being capable of significantly improving the use experience and satisfaction of users, and facilitating the promotion and implementation.

Description

Technical Field

[0001] This application belongs to the field of oral medical restoration technology, specifically relating to a novel dental crown structure. Background Technology

[0002] In existing technologies, dental crowns play a crucial restorative role in the field of dental restoration. They can restore the shape, function, and aesthetics of teeth, and improve patients' chewing efficiency and quality of life. However, conventional dental crowns currently on the market have some shortcomings that urgently need to be addressed.

[0003] In current technology, conventional all-ceramic crown restorations use a composite structure of a zirconia inner core and a surface porcelain layer. However, this method has the following problems: Regarding bonding strength, the inner core and porcelain layer are mostly planarly bonded. This simple bonding method is prone to chipping and detachment under long-term stress, significantly affecting the lifespan and restorative effect of the crown. In terms of aesthetics, the color transition between the porcelain layer and the inner core is harsh, failing to achieve the natural, smooth color gradient of natural teeth, making it difficult to meet patients' high aesthetic demands. Regarding processing precision, traditional back-cutting porcelain application techniques struggle to achieve precise structural fit, resulting in low crown precision and shortening the restoration's lifespan. Furthermore, these all-ceramic crowns are somewhat brittle, easily cracking or even breaking under significant biting forces or accidental impacts, increasing the risk of restoration failure. Moreover, their marginal fit needs improvement. If gaps exist between the crown margin and the tooth structure, it can easily lead to bacterial growth, secondary caries, and other problems, affecting periodontal health.

[0004] Therefore, improvements are urgently needed to comprehensively enhance the bonding strength, aesthetics, processing precision, and biocompatibility of dental crowns, thereby improving the patient experience and restorative outcomes. Utility Model Content

[0005] This application aims to address the technical problem in existing technologies where, in traditional composite structures of an inner crown and a surface porcelain layer, the surface porcelain layer is directly bonded to the surface of the inner crown, and the two are mostly planar. Under long-term stress, this can easily lead to porcelain chipping, detachment, and other phenomena, which greatly affect the lifespan and restorative effect of the crown and significantly reduce the user experience. Therefore, this application proposes a novel crown structure.

[0006] This application adopts the following scheme: a novel dental crown structure, including an inner crown body, an outer ceramic tile disposed on the inner crown body, and a connecting assembly disposed between the inner crown body and the outer ceramic tile. The connecting assembly includes a connecting groove disposed on the side of the outer ceramic tile near the inner crown body, and an adhesive layer disposed between the connecting groove and the inner crown body. The adhesive layer is made of resin, and the inner crown body extends into the connecting groove.

[0007] In some feasible embodiments, the connecting assembly further includes a connecting protrusion on the top of the inner crown and a toothed groove on the connecting groove at the corresponding position of the connecting protrusion. When the inner crown is inserted into the connecting groove, the connecting protrusion is inserted into the toothed groove to fix the outer ceramic piece to the inner crown.

[0008] In some feasible embodiments, the connecting protrusions are provided at multiple intervals along the width direction of the inner crown body, and the tooth grooves are provided at multiple intervals along the width direction of the connecting groove.

[0009] In some feasible embodiments, the number of connecting teeth is defined as N, where N satisfies the following relationship: 2≤N≤5.

[0010] In some feasible embodiments, the inner crown body is made of zirconium oxide.

[0011] In some feasible embodiments, the connection assembly further includes a polishing layer disposed between the inner coronary body and the adhesive layer, the polishing layer being disposed on the outer surface of the inner coronary body, and the adhesive layer being coated on the polishing layer.

[0012] In some feasible embodiments, the connecting assembly further includes limiting protrusions on both sides of the inner crown body. When the connecting protrusions are inserted into the tooth groove, the two sides of the tooth groove abut against the limiting protrusions to restrict the tooth groove from moving away from the connecting protrusions.

[0013] In some feasible embodiments, the adhesive layer is made of any one of acrylate, methacrylate, hydroxyethyl methacrylate, triethylene glycol dimethacrylate, or bisphenol A-glycidyl methacrylate.

[0014] Compared with the prior art, this application has the following beneficial effects: This application provides a novel dental crown structure, comprising an inner crown body, an outer ceramic diaphragm disposed on the inner crown body, and a connecting component disposed between the inner crown body and the outer ceramic diaphragm. The connecting component includes a connecting groove on the side of the outer ceramic diaphragm near the inner crown body, and an adhesive layer disposed between the connecting groove and the inner crown body. The adhesive layer is made of resin, and the inner crown body extends into the connecting groove. By setting a connecting component between the inner crown body and the outer ceramic diaphragm, this application creates a fixed connection between them, enhancing the connection strength and effectively dispersing and buffering stress. This effectively avoids problems such as chipping and detachment under long-term stress, breaking through the limitations of traditional dental crown structures, significantly improving the lifespan and restorative effect of dental crowns. It has significant structural advantages and practical value, significantly improving user experience and satisfaction, and is easy to promote and implement. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of a novel dental crown structure according to this application.

[0016] Figure 2 This is a schematic diagram of the structure of the inner crown of this application.

[0017] Figure 3 This is a schematic diagram of the structure of the ceramic tile in this application.

[0018] Figure 4 This is a reference diagram showing the usage state of a novel dental crown structure according to this application.

[0019] Figure 5 This is a longitudinal sectional view of a novel dental crown structure according to this application.

[0020] Figure 6 This application Figure 5 A magnified view of a portion of point A in the middle.

[0021] Figure 7 This is a cross-sectional view of a novel dental crown structure according to this application. Detailed Implementation

[0022] Combination Figure 1-7 The following description further illustrates the technical solution proposed in this application. This application provides a novel dental crown structure, including an inner crown 1, an outer ceramic plate 2 disposed on the inner crown 1, and a connecting assembly 3 disposed between the inner crown 1 and the outer ceramic plate 2. The connecting assembly 3 includes a connecting groove 30 disposed on the side of the outer ceramic plate 2 near the inner crown 1, and an adhesive layer 31 disposed between the connecting groove 30 and the inner crown 1. The adhesive layer 31 is made of resin, and the inner crown 1 extends into the connecting groove 30.

[0023] This application provides a novel dental crown structure, comprising an inner crown body, an outer ceramic diaphragm disposed on the inner crown body, and a connecting component disposed between the inner crown body and the outer ceramic diaphragm. The connecting component includes a connecting groove on the side of the outer ceramic diaphragm near the inner crown body, and an adhesive layer disposed between the connecting groove and the inner crown body. The adhesive layer is made of resin, and the inner crown body extends into the connecting groove. By setting a connecting component between the inner crown body and the outer ceramic diaphragm, this application creates a fixed connection between them, enhancing the connection strength and effectively dispersing and buffering stress. This effectively avoids problems such as chipping and detachment under long-term stress, breaking through the limitations of traditional dental crown structures, significantly improving the lifespan and restorative effect of dental crowns. It has significant structural advantages and practical value, significantly improving user experience and satisfaction, and is easy to promote and implement.

[0024] In this embodiment, the connecting component 3 further includes a connecting protrusion 32 on the top of the inner crown 1 and a toothed groove 33 on the connecting groove 30 at the corresponding position of the connecting protrusion 32. When the inner crown 1 is inserted into the connecting groove 30, the connecting protrusion 32 is inserted into the toothed groove 33 so that the outer ceramic piece 2 is fixed to the inner crown 1.

[0025] In actual implementation, the shape of the connecting groove 30 is adapted to the shape of the inner crown 1, and the outer ceramic piece can be matched and snapped onto the inner crown. The top of the inner crown 1 is designed with connecting protrusions 32, the shape and size of which match the grooves on the outer ceramic piece, so that the outer ceramic piece can be fitted onto the inner crown.

[0026] In actual implementation, when the inner crown 1 is inserted into the connecting groove 30, the connecting protrusion 32 on the top of the inner crown 1 will be precisely aligned with the corresponding groove 33 on the connecting groove 30. The connecting protrusion 32 extends into the groove 33, and through mechanical fitting and adhesive layer cooperation, the connection strength between the outer ceramic piece 2 and the inner crown 1 is significantly improved.

[0027] In actual implementation, the resin bonding layer 31 fills the tiny gaps between the inner crown 1 and the outer ceramic slab 2 during the curing process, further strengthening the connection. At the same time, it also plays a certain role in sealing, preventing bacteria, food debris, and other substances in the oral cavity from entering between the inner crown 1 and the outer ceramic slab 2, further ensuring the overall performance and service life of the crown.

[0028] In this embodiment, the connecting protrusions 32 are spaced apart along the width direction of the inner crown 1, and the tooth grooves 33 are spaced apart in a matching manner along the width direction of the connecting groove 30.

[0029] In this embodiment, the number of connecting teeth 32 is defined as N, and N satisfies the following relationship: 2≤N≤5.

[0030] For example, N can take the values ​​2, 3, 4, or 5.

[0031] In this embodiment, the inner crown 1 is made of zirconium oxide.

[0032] In actual implementation, multiple connecting teeth 32 and grooves 33 are spaced apart along the width direction of the inner crown 1 and the connecting groove 30, respectively. When the inner crown 1 extends into the connecting groove 30, the multiple connecting teeth 32 align with and embed into the corresponding multiple grooves 33. The multi-point connection design makes the connection between the outer ceramic piece 2 and the inner crown 1 more stable. Compared with a single connecting tooth and groove, multiple connection points can distribute the force and avoid excessive stress concentration in a local area. When the patient chews food, the biting force on the outer ceramic piece 2 can be evenly transmitted to the inner crown 1 through the cooperation of multiple connecting teeth 32 and grooves 33, thereby reducing the risk of breakage at the connection.

[0033] In this embodiment, the connecting component 3 further includes a polishing layer 35 disposed between the inner crown 1 and the adhesive layer 31. The polishing layer 35 is disposed on the outer surface of the inner crown 1, and the adhesive layer 31 is coated on the polishing layer 35.

[0034] In practice, a polishing layer 35 is applied to the outer surface of the inner coronary 1. The function of the polishing layer 35 is to increase the surface roughness of the inner coronary 1, thereby improving the bonding strength between the subsequent adhesive layer 31 and the inner coronary 1. By polishing the surface of the inner coronary 1, many tiny uneven structures are formed on the surface of the inner coronary 1. These structures enable the adhesive layer 31 to be better embedded and adhered, preventing the adhesive layer 31 from falling off the inner coronary 1 under stress.

[0035] In this embodiment, the connecting component 3 also includes limiting protrusions 36 on both sides of the inner crown 1. When the connecting tooth 32 is inserted into the tooth groove 33, the two sides of the tooth groove 33 abut against the limiting protrusions 36 to restrict the tooth groove 33 from moving away from the connecting tooth 32.

[0036] In actual implementation, during crown assembly, the inner crown 1 is inserted into the connecting groove 30, aligning the connecting protrusion 32 with the alveolar 33 and gradually extending it in. Simultaneously, the limiting protrusions 36 on both sides of the inner crown 1 approach the two sides of the alveolar 33. When the connecting protrusion 32 is fully inserted into the alveolar 33, the surfaces on both sides of the alveolar 33 will tightly abut against the limiting protrusions 36, thus restricting the alveolar 33 from moving away from the connecting protrusion 32. This allows the outer porcelain piece 2 to be securely fixed to the inner crown 1, ensuring the stability of the crown structure during use and enabling it to withstand external forces such as chewing forces in the oral cavity without easily loosening or falling off.

[0037] In this embodiment, the adhesive layer 31 is made of any one of acrylate, methacrylate, hydroxyethyl methacrylate, triethylene glycol dimethacrylate, or bisphenol A-glycidyl methacrylate.

[0038] In actual implementation, the adhesive layer 31 is made of methacrylate.

[0039] This application provides a novel dental crown structure, comprising an inner crown body, an outer ceramic diaphragm disposed on the inner crown body, and a connecting component disposed between the inner crown body and the outer ceramic diaphragm. The connecting component includes a connecting groove on the side of the outer ceramic diaphragm near the inner crown body, and an adhesive layer disposed between the connecting groove and the inner crown body. The adhesive layer is made of resin, and the inner crown body extends into the connecting groove. By setting a connecting component between the inner crown body and the outer ceramic diaphragm, this application creates a fixed connection between them, enhancing the connection strength and effectively dispersing and buffering stress. This effectively avoids problems such as chipping and detachment under long-term stress, breaking through the limitations of traditional dental crown structures, significantly improving the lifespan and restorative effect of dental crowns. It has significant structural advantages and practical value, significantly improving user experience and satisfaction, and is easy to promote and implement.

[0040] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A novel crown structure, characterized by, The device includes an inner crown (1), an outer ceramic piece (2) disposed on the inner crown (1), and a connecting assembly (3) disposed between the inner crown (1) and the outer ceramic piece (2). The connecting assembly (3) includes a connecting groove (30) disposed on the side of the outer ceramic piece (2) near the inner crown (1), and an adhesive layer (31) disposed between the connecting groove (30) and the inner crown (1). The adhesive layer (31) is made of resin, and the inner crown (1) extends into the connecting groove (30).

2. A novel crown structure as claimed in claim 1, wherein, The connecting component (3) further includes a connecting tooth (32) on the top of the inner crown (1) and a tooth groove (33) on the connecting groove (30) at the corresponding position of the connecting tooth (32). When the inner crown (1) is inserted into the connecting groove (30), the connecting tooth (32) is inserted into the tooth groove (33) so that the outer ceramic piece (2) is fixed to the inner crown (1).

3. A novel crown structure as claimed in claim 2, wherein, The connecting protrusions (32) are provided at intervals along the width direction of the inner crown (1), and the tooth grooves (33) are provided at intervals along the width direction of the connecting groove (30).

4. A novel crown structure according to claim 3, characterized in that The number of connecting teeth (32) is defined as N, and N satisfies the following relationship: 2≤N≤5.

5. A novel crown structure as claimed in claim 1, wherein, The inner crown (1) is made of zirconium oxide.

6. A novel crown structure as claimed in claim 1, wherein, The connecting component (3) further includes a polishing layer (35) disposed between the inner crown (1) and the adhesive layer (31), the polishing layer (35) being disposed on the outer surface of the inner crown (1), and the adhesive layer (31) being coated on the polishing layer (35).

7. A novel crown structure as claimed in claim 2, wherein, The connecting component (3) further includes limiting protrusions (36) on both sides of the inner crown body (1). When the connecting protrusion (32) is inserted into the tooth groove (33), the two sides of the tooth groove (33) abut against the limiting protrusions (36) to restrict the tooth groove (33) from moving away from the connecting protrusion (32).

8. A novel crown structure as claimed in claim 1, wherein, The adhesive layer (31) is made of any one of acrylate, methacrylate, hydroxyethyl methacrylate, triethylene glycol dimethacrylate, or bisphenol A-glycidyl methacrylate.

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