Dental article and process for surface modification of dental article

A surface modification and product technology, applied in dental preparations, dentistry, dental prostheses, etc., can solve the problems of low resin strength and deformation, and achieve the effect of enhancing bonding performance, beautiful appearance and high transparency

Inactive Publication Date: 2004-11-03
TOMY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] In addition, if devices for dentures such as artificial teeth, denture bases and post-denture liners are made of olefin-based resins such as polypropylene and polyethylene, these devices for dentures have a disadvantage in that the strength of the resin is low, and thus will be easily deformed

Method used

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  • Dental article and process for surface modification of dental article
  • Dental article and process for surface modification of dental article
  • Dental article and process for surface modification of dental article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] (Preparation of brackets)

[0096] A polycycloolefin (trade name: Zeonor 1020R; glass transition temperature: 105°C; produced by ZEON Corporation) was subjected to ordinary injection molding to prepare Figure 1A The bracket 10 shown in. The total weight of the ten brackets 10 thus produced was 0.265 g.

[0097] (Surface Modification of Brackets)

[0098] The brackets thus prepared were washed with ethanol at room temperature for 30 minutes, and then dried at 50° C. for 30 minutes.

[0099] Subsequently, an acetone solution containing 3% by weight of polyvinyl acetate as a hydrophilic polymer and 2% by weight of benzophenone as a graft polymerization initiator was coated on the bonding surface of the bracket, and then Dry at 50°C for 30 minutes. Thereafter, 100 ml of an aqueous solution containing 5% by weight of acrylic acid as a reactive monomer was charged into a reaction container made of quartz glass. The bracket was then also placed in the reaction vessel. Th...

Embodiment 2

[0103] The procedure of Example 1 was repeated, except that the polycycloolefin was replaced by a copolymer of cycloolefin and ethylene (Topas6013; heat distortion temperature: 130° C.; manufactured by Mitsui Chemicals Co., Ltd.). The bonding surface of the thus-produced bracket was then subjected to surface modification in the same manner as in Example 1, whereby "bracket B" was obtained.

Embodiment 3

[0105] Brackets were prepared in the same manner as in Example 1. The bonding surface of the bracket thus obtained was then subjected to surface modification in the same manner as in Example 1. Under the illumination that has been filtered to cut off the components of 600nm and below 600nm, use a Bis-GMA (bisphenol A-glycidyl methacrylate) photopolymerizable adhesive (trade name: Ideal lightcure, available from GAC International, USA) Inc.) on the adhesive surface of the bracket thus prepared. The brackets thus coated were then placed in a closed container protected from light for 7 days, thus obtaining "Brackets C".

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Abstract

A dental article is formed by a polymer material obtained by the polymerization of at least a cycloolefin. A process for the surface modification of a dental article formed by a polymer material obtained by the polymerization of at least a cycloolefin, comprises applying a graft polymerization initiator over the surface of the dental article, supplying a reactive monomer onto the coated surface of the article, and then subjecting the coat to graft photopolymerization.

Description

technical field [0001] The present invention relates to a dental product installed in the oral cavity, such as orthodontic devices and denture devices, and a method for modifying the surface of the dental product. Background technique [0002] Orthodontic equipment is one of the dental products used to correct irregular teeth. The vast majority of orthodontic appliances are treated by bonding directly to the patient's teeth. Known devices for orthodontic treatment of this type include brackets, bands, buccal tubes, lingual sheaths, and lingual buttons. Among these orthodontic devices, brackets are the most commonly used devices. [0003] Metal brackets have been known so far as orthodontic devices. In recent years, brackets made of transparent or white translucent materials, such as ceramic brackets and plastic brackets, have been used in order to improve the aesthetic appearance. [0004] The material used to form current plastic brackets is often glass fiber reinforced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C13/00A61K6/00A61K6/083
CPCA61K6/083A61K6/887C08L31/00
Inventor 久保正男折笠正明
Owner TOMY CO LTD
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