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Dental adhesive system based on new concept of hydrophobic bonding

A technology of adhesives and hydrophobizing reagents, applied in dental preparations, dentistry, dental prostheses, etc., can solve the problems of secondary caries restorations falling off, poor bonding stability of dentin, etc., and achieve poor stability and accelerated interface Degradation effect

Active Publication Date: 2020-06-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-term stability of dentin bonding is still poor, and the bonding interface degrades over time, leading to secondary caries and even restoration loss

Method used

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  • Dental adhesive system based on new concept of hydrophobic bonding
  • Dental adhesive system based on new concept of hydrophobic bonding
  • Dental adhesive system based on new concept of hydrophobic bonding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Component A: 2 (V / V)% alkyl trichlorosilane (see attached table 1 for details, taking octadecyl trichlorosilane as an example) ethanol solution.

[0029] 2. Component B: 70 wt% bisphenol A diglycidyl methacrylate, 1 wt% camphorquinone, 29 wt% ethanol, prepared after mixing.

Embodiment 2

[0031] 1. Component A: 1 (V / V)% fluorotrichlorosilane (see attached table 2 for details) ethanol solution.

[0032] 2. Component B: 70 wt% bisphenol A diglycidyl methacrylate, 1 wt% camphorquinone, 29 wt% ethanol, prepared after mixing.

Embodiment 3

[0034] 1. Component A: 1 (V / V)% functionalized trichlorosilane (see attached table 3 for details) ethanol solution.

[0035] 2. Component B: 70 wt% bisphenol A diglycidyl methacrylate, 1 wt% camphorquinone, 29 wt% ethanol, prepared after mixing.

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Abstract

The invention provides a tooth adhesive system based on a new hydrophobic adhesion concept. The tooth adhesive system comprises a single-component adhesive and a bi-component adhesive, wherein the necessary components of the single-component adhesive and the bi-component adhesive are a hydrophobization reagent, solvents, hydrophobic polymeric monomers and photopolymerization initiators. The system is characterized in that hydrophobic modification is firstly carried out on tooth surfaces in the adhering process, so that the tooth surfaces are converted from hydrophilic surfaces to hydrophobic surfaces. The system has the beneficial effects that the polymeric monomers in the adhesives can fully infiltrate demineralized dentin matrices, so that adhesive monomers fully infiltrate the demineralized dentin matrices, and a uniform and stable mixed layer is finally formed after in-situ polymerization, thus obviously improving the immediate adhesion strength, improving the long-term adhesion strength of dentin by several times, obviously reducing the nano leakage rate of the mixed layer and radically improving the durability of adhesion and restoration; the system has the effect of obviously improving the immediate and long-term adhesion strength of dentin and enamel and the durability of tooth prosthesis adhesion and has obvious dentin immediate sealing effects and good dentin desensitizing effects.

Description

technical field [0001] The invention belongs to the fields of oral cavity adhesive restoration and dental hypersensitivity prevention and treatment, and relates to a novel dental adhesive system based on the new concept of hydrophobic adhesive. Background technique [0002] The restorative treatment of tooth defects includes resin filling, inlay, partial crown and full crown restoration. Since the concept of "wet bonding" was proposed in the 1990s, this technology has become the cornerstone of the field of dentin bonding. With the development of bonding materials, the immediate effect of dentin bonding based on wet bonding technology has reached a satisfactory level. However, the long-term stability of dentin bonding is still poor, and the bonding interface degrades over time, leading to secondary caries and even restoration loss. The durability of dentin bonding is a key factor affecting the service life of restorations. Therefore, improving the durability of dentin bond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/884A61K6/80A61K6/30
CPCA61K6/80A61K6/889C08L33/10
Inventor 李晓东罗巧洁朱蔚璞
Owner ZHEJIANG UNIV
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