Prefabricated integrated fiber post core
Through the design of pre-integrated fiber pile cores, the fiber pile and the connecting core are integrated into one, which solves the problems of low efficiency and insufficient bonding strength in the existing technology, and achieves efficient and stable tooth restoration effect.
Patent Information
- Application Number
- CN202422091595.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing fiber pile and post crown repair efficiency is low and the bonding strength is insufficient. It is difficult to operate especially in large-area dental defects and double canals, which is prone to risk of shedding.
Pre-integrated fiber pile cores are adopted, and the fiber piles and the connecting core are integrally formed. The outer wall of the connecting core is equipped with grooves that are adapted to the crown shape. They are directly connected to the crown through adhesives, reducing the manual stacking steps and improving stability.
It improves the efficiency and stability of fiber pile-post coronal repair, adapts to the interfacing needs of different dental positions and double canals, and reduces the operational complexity and risk of shedding.
Smart Images
Figure CN223275518U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of fiber posts and cores, and in particular to prefabricated integrated fiber posts and cores. Background Art
[0002] Fiber post and core crown restoration is mainly used for large-area tooth defects caused by trauma, caries and other reasons. It is a tooth reconstruction technology performed on the tooth root. Large-area tooth defects refer to the loss of most of the hard tissue of the crown of the affected tooth, and even involve the root. Due to the small amount of remaining tooth tissue, it is impossible to achieve good retention using the crown alone. In order to increase retention, clinically, light-curing resin is first injected into the root canal, and then the fiber post is inserted. The pulp chamber and the upper part of the root are then built up with light-curing resin. After light-curing polymerization, the resin in the upper part of the root is cured to form a core. Finally, the crown is placed on the outer wall of the core. The crown is located on the preparation formed by the core and the remaining tooth tissue, thereby restoring the shape and function of the tooth.
[0003] The molding of resin cores mainly relies on manual modeling. Due to the high fluidity of the material and the small operating space in the mouth, especially for posterior teeth and teeth with double root canals, clinical operation is difficult, resulting in low efficiency of fiber post and core crown restoration. At the same time, the bonding strength between the manually modeled resin core and the fiber post is insufficient, which makes it easy to fall off. Summary of the Invention
[0004] In order to improve the efficiency of fiber post-core crown restoration, the present application provides a prefabricated integrated fiber post and core.
[0005] The prefabricated integrated fiber post and core provided in this application adopts the following technical solutions:
[0006] The prefabricated integrated fiber post and core includes a fiber post, which is a conical post. The cross-sectional diameter of the fiber post gradually decreases from top to bottom. The bottom surface of the fiber post is an arc surface. The top surface of the fiber post is provided with a connecting core. The connecting core and the fiber post are integrally formed, and the dental crown is adaptively arranged on the outer wall of the connecting core.
[0007] By adopting the above technical solution, the fiber post is inserted into the root canal from the bottom. The bottom diameter of the fiber post is smaller, which makes it easier to insert the fiber post into the root canal. At the same time, the fiber post can also adapt to the shape of the root canal, so that it can better fit with the root canal and improve the connection stability between the fiber post and the root canal. The bottom surface of the fiber post is a circular arc surface, which makes the fiber post smoother, thereby reducing the damage to the root canal caused by the sharp part of the fiber post.
[0008] The connecting core and the fiber post are formed as one piece. Therefore, when the fiber post is inserted into the root canal, the connecting core is located on the top surface of the fiber post at the same time. The outer wall of the connecting core is then coated with adhesive. After that, the crown is put on the outer wall of the connecting core. The crown and the connecting core are bonded with the adhesive. Compared with the method of inserting the fiber post into the root canal and then using light-curing resin to build the pulp chamber and the upper part of the root to make the connecting core, the connecting core and the fiber post of the present application are formed as one piece, thereby reducing the steps of manually building the connecting core, and thus improving the efficiency of fiber post-core-crown restoration.
[0009] Preferably, the connecting core is a semi-cylindrical structure, the connecting core is provided with an arc surface on the side away from the fiber post, the outer wall of the connecting core is provided with a connecting groove, the connecting groove is an arc groove, and the connecting core is provided with a flat surface on the side away from the connecting groove.
[0010] By adopting the above technical solution, the connecting core is a semi-cylindrical structure, and a connecting groove is opened on the outer wall of the connecting core, which can adapt to the crown shape of the front teeth. At the same time, when there are double root canals that need to be plugged in, two fiber posts are inserted into the root canals close to them, and the flat surfaces of the two connecting cores are abutted against each other, thereby adapting to the plugging of double root canals and improving the applicability of the connecting core.
[0011] Preferably, a strip groove is provided on the outer wall of the connecting core, the long side direction of the strip groove is consistent with the long side direction of the connecting core, and the strip groove is located on one side of the arc surface of the connecting core.
[0012] By adopting the above technical solution, under the action of the strip groove, the bonding area between the connection core and the crown can be increased, thereby improving the connection stability between the connection core and the crown.
[0013] Preferably, there are a plurality of the strip-shaped grooves, and the plurality of the strip-shaped grooves are distributed along the wide side direction of the connecting core.
[0014] By adopting the above technical solution, there are multiple strip grooves, and under the action of the multiple strip grooves, the connection stability between the connection core and the crown is further increased.
[0015] Preferably, a long groove is provided on one side of the flat surface of the connecting core, and the long side direction of the long groove is consistent with the long side direction of the connecting core.
[0016] By adopting the above technical solution, under the action of the long groove, the bonding area between the connecting core and the crown can be increased. At the same time, when double root canals need to be plugged in and the flat surfaces of the two connecting cores are abutted against each other, the bonding area between the two connecting cores can be increased, thereby increasing the connection stability between the two connecting cores.
[0017] Preferably, there are a plurality of the elongated grooves, and the plurality of the elongated grooves are distributed along the wide side direction of the connecting core.
[0018] By adopting the above technical solution, there are multiple long grooves. Under the action of multiple long grooves, the connection stability between the connecting core and the crown can be further improved, or when double root canals need to be plugged in, the connection stability between the two connecting cores can be further improved.
[0019] Preferably, the connecting core includes a first connecting part and a second connecting part, the first connecting part is a funnel-shaped structure, the bottom surface of the first connecting part is connected to the top surface of the fiber pile, and the second connecting part is a cylindrical structure, and the second connecting part is connected to the top surface of the first connecting part.
[0020] By adopting the above technical solution, the shape of the crown of other teeth can be adapted, thereby improving the applicability of the connection core.
[0021] Preferably, the connecting core is a truncated cone-shaped structure, the diameter of the top surface of the connecting core is smaller than the diameter of the bottom surface of the connecting core, and the top surface of the fiber post is connected to the bottom surface of the connecting core.
[0022] By adopting the above technical solution, the shape of the connection core can adapt to the crown with a truncated cone shape at the connection point, thereby improving the applicability of the connection core.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. The connecting core and the fiber post are formed as one piece. Therefore, when the fiber post is inserted into the root canal, the connecting core is located on the top surface of the fiber post at the same time. Then, the outer wall of the connecting core is coated with adhesive. After that, the crown is put on the outer wall of the connecting core. The crown and the connecting core are bonded with the adhesive. Compared with the method of inserting the fiber post into the root canal and then using light-curing resin to build the pulp chamber and the upper part of the root to make the connecting core, the connecting core and the fiber post of the present application are formed as one piece, thereby reducing the steps of manually building the connecting core, and thus improving the efficiency of fiber post-core-crown restoration.
[0025] 2. The connecting core is a semi-cylindrical structure with a connecting groove on its outer wall, which can adapt to the crown shape of the front teeth. At the same time, when double root canals need to be connected, two fiber posts are inserted into the root canals close to them, and the flat surfaces of the two connecting cores are in contact with each other, thereby adapting to the connection of double root canals and improving the applicability of the connecting core. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.
[0027] Figure 2 It is a structural diagram of another perspective of the first embodiment of the present application.
[0028] Figure 3 It is a structural diagram of Example 2 of the present application.
[0029] Figure 4 It is a structural diagram of Example 3 of the present application.
[0030] Explanation of the reference numerals: 1. fiber post; 2. connecting core; 21. connecting groove; 22. strip groove; 23. long groove; 24. first connecting portion; 25. second connecting portion. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-4 This application is described in further detail.
[0032] The embodiments of the present application disclose a prefabricated integrated fiber post and core.
[0033] Example 1:
[0034] Reference Figure 1 , a prefabricated integrated fiber post and core includes a fiber post 1. The fiber post 1 is a conical post. The cross-sectional diameter of the fiber post 1 gradually decreases from top to bottom. The fiber post 1 is inserted into the root canal from the bottom. The bottom diameter of the fiber post 1 is smaller, which makes it easier for the fiber post 1 to be inserted into the root canal. At the same time, the fiber post 1 can also adapt to the shape of the root canal, so that it can better fit the root canal and improve the connection stability between the fiber post 1 and the root canal. The bottom surface of the fiber post 1 is a circular arc surface, which makes the fiber post 1 smoother, thereby reducing the damage to the root canal by the sharp part of the fiber post 1.
[0035] In an embodiment of the present application, the fiber post 1 is a continuous fiber reinforced resin composite post, the fiber can be carbon fiber, glass fiber, quartz fiber, aramid fiber, basalt fiber, and the resin can be epoxy resin, acrylic resin, phenolic resin, so that the high strength and high modulus of the fiber post 1 help to withstand chewing force. At the same time, it has good biocompatibility, can reduce the stimulation to periodontal tissue, and has X-ray opacity, which helps to clearly display the position of the fiber post 1 on the X-ray film.
[0036] A connecting core 2 is provided on the top surface of the fiber post 1, and the connecting core 2 is integrally formed with the fiber post 1. Therefore, when the fiber post 1 is inserted into the root canal, the connecting core 2 is located on the top surface of the fiber post 1 at the same time, and then the outer wall of the connecting core 2 is coated with adhesive. Thereafter, the crown is put on the outer wall of the connecting core 2, and the crown and the connecting core 2 are bonded with the adhesive. Compared with the method of inserting the fiber post 1 into the root canal and then using light-curing resin to build up the pulp chamber and the upper part of the root to make the connecting core, the connecting core 2 of the present application is integrally formed with the fiber post 1, thereby reducing the step of manually building up the connecting core, and thus improving the efficiency of the post-core-crown restoration of the fiber post 1.
[0037] The shape of the connecting core 2 depends on the specific situation. The crowns of different teeth are different. The shape of the connecting core 2 is adapted to the crowns of different teeth. In the embodiment of the present application, the connecting core 2 is a semi-cylindrical structure. The connecting core 2 is provided with an arc surface on the side away from the fiber post 1. The outer wall of the connecting core 2 is provided with a connecting groove 21. The connecting groove 21 is an arc groove. The side of the connecting core 2 away from the connecting groove 21 is a flat surface, thereby adapting to the crown shape of the front teeth. At the same time, when there are double root canals that need to be plugged in, the two fiber posts 1 are inserted into the root canals close to them, and the flat surfaces of the two connecting cores 2 are abutted against each other, thereby adapting to the plugging of the double root canals and improving the applicability of the connecting core 2.
[0038] Reference Figure 1 and Figure 2 A strip groove 22 is provided on the outer wall of the connecting core 2, and the long side direction of the strip groove 22 is consistent with the long side direction of the connecting core 2. The strip groove 22 is located on one side of the arc surface of the connecting core 2. There are multiple strip grooves 22, and multiple strip grooves 22 are distributed along the wide side direction of the connecting core 2. Correspondingly, a long groove 23 is provided on the flat surface side of the connecting core 2, and the long side direction of the long groove 23 is consistent with the long side direction of the connecting core 2. There are multiple long grooves 23, and multiple long grooves 23 are distributed along the wide side direction of the connecting core 2. Under the action of the strip grooves 22 and the long grooves 23, the bonding area between the connecting core 2 and the crown can be increased, thereby improving the connection stability between the connecting core 2 and the crown.
[0039] Example 2: The difference between this example and Example 1 is that the shapes of the connecting core 2 are different.
[0040] Reference Figure 3 In this embodiment, the connecting core 2 includes a first connecting part 24 and a second connecting part 25. The first connecting part 24 is a funnel-shaped structure. The bottom surface of the first connecting part 24 is connected to the top surface of the fiber post 1. The diameter of the top surface of the first connecting part 24 is larger than the diameter of the bottom surface of the first connecting part 24. The second connecting part 25 is a cylindrical structure. The diameter of the second connecting part 25 is smaller than the diameter of the top surface of the first connecting part 24. The second connecting part 25 is connected to the middle of the top surface of the first connecting part 24. In this embodiment, the shape of the connecting core 2 can adapt to the shape of crowns in other tooth positions.
[0041] Example 3: The difference between this example and Example 1 is that the shapes of the connecting core 2 are different.
[0042] Reference Figure 4 In this embodiment, the connecting core 2 is a truncated cone-shaped structure, the diameter of the top surface of the connecting core 2 is smaller than the diameter of the bottom surface of the connecting core (2), the diameter of the bottom surface of the connecting core 2 is larger than the diameter of the top surface of the fiber post 1, and the top surface of the fiber post 1 is connected to the middle part of the bottom surface of the connecting core 2. In this embodiment, the shape of the connecting core 2 can adapt to the crown with a truncated cone shape at the connection point.
[0043] The above are all preferred embodiments of the present application. These embodiments are only explanations of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be covered within the scope of protection of the present application.
Claims
1. A prefabricated integrated fiber post and core, comprising a fiber post (1), wherein the fiber post (1) is a conical post, wherein the cross-sectional diameter of the fiber post (1) gradually decreases from top to bottom, the bottom surface of the fiber post (1) is an arc surface, and a connecting core (2) is provided on the top surface of the fiber post (1), wherein the connecting core (2) and the fiber post (1) are integrally formed, and a tooth crown is suitably arranged on the outer wall of the connecting core (2), characterized in that: The connecting core (2) is a semi-cylindrical structure. The connecting core (2) is provided with an arc surface on the side away from the fiber post (1). The outer wall of the connecting core (2) is provided with a connecting groove (21). The connecting groove (21) is an arc-shaped groove. The side of the connecting core (2) away from the connecting groove (21) is a flat surface. The outer wall of the connecting core (2) is provided with a strip groove (22), the long side direction of the strip groove (22) is consistent with the long side direction of the connecting core (2), the strip groove (22) is located on one side of the arc surface of the connecting core (2), there are multiple strip grooves (22), and the multiple strip grooves (22) are distributed along the wide side direction of the connecting core (2); the connecting core (2) is provided with a long groove (23) on one side of the flat surface, the long side direction of the long groove (23) is consistent with the long side direction of the connecting core (2), there are multiple long grooves (23), and the multiple long grooves (23) are distributed along the wide side direction of the connecting core (2); The connecting core (2) includes a first connecting portion (24) and a second connecting portion (25), wherein the first connecting portion (24) is a funnel-shaped structure, the bottom surface of which is connected to the top surface of the fiber post (1), and the second connecting portion (25) is a cylindrical structure, which is connected to the top surface of the first connecting portion (24).
2. The prefabricated integrated fiber post and core according to claim 1, characterized in that: The connecting core (2) is a truncated cone-shaped structure, the diameter of the top surface of the connecting core (2) is smaller than the diameter of the bottom surface of the connecting core (2), and the top surface of the fiber post (1) is connected to the bottom surface of the connecting core (2).