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Application of fiber post to preparation of pulp penetrating type cracked molar prosthesis

A prosthesis, fiber technology, applied in prosthetics, dentistry, filling teeth, etc., to improve stress concentration and prevent further expansion

Active Publication Date: 2017-12-22
西安交通大学口腔医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no one has applied the connection effect of fiber posts to the treatment of penetrating cracked teeth

Method used

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  • Application of fiber post to preparation of pulp penetrating type cracked molar prosthesis
  • Application of fiber post to preparation of pulp penetrating type cracked molar prosthesis
  • Application of fiber post to preparation of pulp penetrating type cracked molar prosthesis

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] A method for preparing a pulp-piercing type cracked molar fiber post restoration of the present invention comprises the following steps:

[0030] Step 1. Simulate conventional root canal treatment: rubber dam on the penetrating cracked tooth, open the pulp, rinse with 5.25% sodium hypochlorite, explore the root canal opening, preliminarily prepare the root canal with 10# and 15# K files, measure the root canal length Long, the root canal was prepared to F2 with the Waveone system, and the length of the root canal was determined by taking a long film. Clean and disinfect the root canal, dry it, use hot gutta-percha vertically pressurized gutta-percha tip 4 to fill the root canal to 1 mm below the root canal opening, and glass ionomer 5 seals the root canal opening. An X-ray was taken to confirm that the root filling was properly filled.

[0031] Step two, see figure 2 , at a distance of A groove (2.00mm wide, 3.50mm deep) perpendicular to the direction of the crack ...

Embodiment 1

[0038] Example 1: The fiber post is laid horizontally in the medullary cavity perpendicular to the crack direction + resin filling

Embodiment 2

[0039] Example 2: Fiber post laid horizontally in the medullary cavity perpendicular to the crack direction + resin filling + all-ceramic crown

[0040] Perform three-dimensional finite element analysis on the above models:

[0041] The three-dimensional finite element analysis method refers to the previous research of the inventor: "Establishment of the three-dimensional finite element model of the maxillary premolar penetrating wedge-shaped defect", Li Yinglou, Jiang Yuegui, etc., compilation of papers of the Ninth National Endodontics Academic Conference . The ANSYS software was used to load different sizes (135N and 270N) and buccal 45° loads acting on the middle of the buccal triangular crest on each group of models, and the loading method was static loading. Calculate the maximum equivalent stress value of the dentin and the peak value of the equivalent stress at the crack of each group of models under different loads, and generate a dentin stress cloud map, and analyze...

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Abstract

The invention discloses an application of a fiber post to preparation of a pulp penetrating type cracked molar prosthesis. A crack of a pulp penetrating type cracked molar is located at the occlusal surface of the dental crown in the mesio-distally direction of a developmental groove and is parallel to the long axis of teeth, and the fiber post is located at a position 3.0-3.5 mm away from the occlusal surface of the dental crown and is horizontally placed perpendicular to the direction of the crack. The diameter of the fiber post is 1.3-1.5 mm, and the fiber post is as long as a pulp cavity. According to the prosthesis, by adding the fiber post to a resin prosthesis, stress concentration of a pulp penetrating type cracked tooth crack tip of a maxillary first premolar in the mesio-distally direction can be improved, and further expansion of full-crown cracks can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of tooth restoration, and in particular relates to the application of a fiber post for preparing a penetrating type cracked molar restoration. Background technique [0002] Penetrating cracked molars refer to the cracked molars whose cracks have reached the pulp cavity but have not yet undergone crown-root fracture, which belongs to the late cracked teeth. Symptoms of pulpitis or periapical periodontitis such as provocation pain, occlusal pain, and spontaneous pain often occur. The prognosis of cracked molars is related to the depth of the crack. It is generally believed that the deeper the crack, the worse the prognosis of cracked molars. The direction of cracks in cracked molars was irregular, and could be mesial-distal, buccolingual, or oblique; or two or more directions were involved. About 81.1% of cracked molars were cracks in mesial and distal directions. The etiology of cracked teeth is relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C5/20A61C5/70A61C5/77A61C5/50A61C5/40
CPCA61C5/20A61C5/40A61C5/50A61C5/70A61C5/77
Inventor 蒋月桂马瑞雪李晚晚卢奕冯睿孙沫逸
Owner 西安交通大学口腔医院
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