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Chimeric type pile core body for tooth defect repair as well as preparation method and application thereof

A tooth defect, mosaic technology, applied in the direction of dental prosthesis, dentistry, filling teeth, etc., can solve the problem that the metal post and core cannot achieve the aesthetic effect, affect the MRI diagnosis, the adhesive layer is too thick, etc. Uniform stress distribution, light weight and good retention

Inactive Publication Date: 2020-11-13
THE STOMATOLOGIAL HOSPITAL OF ZHEJIANG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional cast metal post core has good adhesion and strength, the metal post has disadvantages such as corrosion, allergies, toxicity, and influence on NMR diagnosis, and the elastic modulus of the metal material is much higher than that of the tooth root, which may cause tooth root splitting when stressed. Cracks, opaque metal posts and cores combined with all-ceramic crowns cannot achieve the ideal aesthetic effect
Compared with metal posts, the elastic modulus of fiber posts is close to that of dentin. It is widely used due to its superior biological properties, but it still has certain limitations. For example, the mismatch between the prefabricated fiber post and the root canal shape will cause If the adhesive layer is too thick, the micro-leakage at the edge will eventually cause the post core to fall off and break off

Method used

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  • Chimeric type pile core body for tooth defect repair as well as preparation method and application thereof
  • Chimeric type pile core body for tooth defect repair as well as preparation method and application thereof
  • Chimeric type pile core body for tooth defect repair as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, it is mainly composed of a main post core 1 and an auxiliary post core 2. The main post core 1 and the auxiliary post core 2 are each integrally formed by a pile and a core at the top of the pile; the core of the main post core 1 and the The cores of the auxiliary post and core 2 are fitted together, and the longitudinal fitting surface between the cores is parallel to the pile of the auxiliary post and core 2 .

[0037] The fitting surface between the core of the main post and core 1 and the nucleus of the auxiliary post and core 2 is nearly Z-shaped, and the upper and lower sections of the Z-shaped fitting surface form a longitudinal fitting surface along the longitudinal direction, and the two longitudinal fitting surfaces are both in line with the The piles of the auxiliary pile core 2 are parallel.

[0038] The application of the chimeric post-core body of the present invention is for the purpose of repairing the root of the tooth withou...

Embodiment 2

[0043] Such as image 3 and Figure 4 As shown, the auxiliary post and core 2 is divided into a first auxiliary post and core 3 and a second auxiliary post and core 4, which are mainly formed by interfitting the main post and core 1, the first auxiliary post and core 3 and the second auxiliary post and core 4, The main post core 1, the first auxiliary post core 3 and the second auxiliary post core 4 are each integrally formed by the pile and the core at the top of the post; the core of the main post core 1 and the core of the first auxiliary post core 3 are mutually Fitting, and the longitudinal fitting surface between the core and the core is parallel to the pile of the first secondary post core 3; the core of the first secondary post core 3 and the core of the second secondary post core 4 are mutually fitted, and the core The longitudinal fitting surface between the core and the pile of the second secondary pile core 4 is parallel.

[0044] The fitting surface between the ...

Embodiment approach

[0060] 1. Root canal and tooth preparation: original posterior teeth with multiple canals, residual roots and crowns that are not parallel, such as Figure 5 As shown, remove the root filling of the posterior tooth, expose the canal openings, use the expanding needle to find out the direction of each canal, select 2 thick and straight root canals, and use the reamer according to the natural direction of the canal For preparation, the depth reaches two-thirds of the root length, and the apex is kept 4-5mm closed, and there is no need to consider the common seating path of the two canals during root preparation. The remaining teeth were prepared according to the full crown standard.

[0061] 2. Impression taking: After the tooth preparation is completed, the gingiva is retracted, and the residual root section of the posterior tooth is exposed. Use a 2mml syringe combined with a No. 9 needle to inject the silicone rubber impression material with good flow properties into the root...

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Abstract

The invention discloses a chimeric type pile core body for tooth defect repair and a preparation method and an application thereof. A main pile core and an auxiliary pile core are embedded with each other, each of the main pile core and the auxiliary pile core is composed of a pile and a core integrally formed at the top end of the pile, the cores are embedded with each other, and a longitudinal embedding surface between the cores is parallel to the pile of the auxiliary pile core; the embedding face is in a Z shape, the upper section and the lower section of the Z shape of the embedding faceform longitudinal embedding faces in the longitudinal direction, and the two longitudinal embedding faces are parallel to a pile of the auxiliary pile core. The pile core is divided into two or threeparts to be inserted into root canals in different directions, the longitudinal embedding surfaces between the cores are parallel to the pile of the auxiliary pile core, the retention force of the pile core is enhanced through friction force and the locking effect, the bending resistance of teeth is improved, and the pile core is used for repairing residual roots and residual crowns of multiple canals.

Description

technical field [0001] The invention relates to a chimeric post-core body and its preparation method and application, in particular to a chimeric post-core body and its preparation method and application. Background technique [0002] Severe defects in the posterior crown require the use of post-core restorations to provide sufficient retention and resistance for the crown restoration. At present, the post-cores commonly used clinically to repair posterior tooth defects are cast metal post-cores and pre-formed fiber post-resin cores. Although the traditional cast metal post core has good adhesion and strength, the metal post has disadvantages such as corrosion, allergies, toxicity, and influence on NMR diagnosis, and the elastic modulus of the metal material is much higher than that of the tooth root, which may cause tooth root splitting when stressed. Cracks, opaque metal posts and cores combined with all-ceramic crowns cannot achieve the desired aesthetic effect. Compare...

Claims

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Application Information

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IPC IPC(8): A61C5/20A61C5/50A61C5/77
CPCA61C5/20A61C5/50A61C5/77
Inventor 刘蔚应淑女
Owner THE STOMATOLOGIAL HOSPITAL OF ZHEJIANG UNIV SCHOOL OF MEDICINE
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