Setting Reaction of Polyacid Modified Composite Resins or Compomers

Author:

Arrondo J.L.R,Collado M.I,I Soler,Triana R,Ellacuria J

Abstract

The hardening of modified polyacid composite resins (compomers) and glass-ionomers have been studied using infrared spectroscopy. The acid-base reaction in Ketac-fil, a glass ionomer, was followed by the ratio between the COOH band located around 1715 cm-1 and that corresponding to COO- located around 1570 cm-1. The combination of infrared analysis and band narrowing treatments enable us to propose in the glass-ionomer two maturation steps. First, a very rapid equilibrium acid-base related, and second the cross-linking of polycarboxylate with the metal ions present in the cement. In compomers, a new reaction has been described involving polymerization induced by free radicals besides the two steps associated with the acid-base reaction. Using infrared spectroscopy and band narrowing techniques, it is shown that water is essential to complete the hardening process but no acid-base reaction is produced since the COO- band does not appear. The reaction associated with free radicals could be described as a polymerization of methacrylate monomers together with an aqueous dilution of the filling particles releasing different metal cations that would chelate with the polymer molecules to form a macromolecular structure.

Publisher

Bentham Science Publishers Ltd.

Subject

General Dentistry

Reference22 articles.

1. McLean JW, Nicholson JW, Wilson AD. Proposed nomenclature for glass-ionomer dental cements and related materials Quintessence Intl 2004; 5 : 587-9.

2. Wilson AD, Kent BE. New Translucent Cement for Dentistry - Glass ionomer cement Br Dent J 1972; 132 : 133-5.

3. Wilson AD, McLean JW. Glass-ionomer cements. Chicago: Quintessence Publishing Co., Inc 1996; pp. 125-30.

4. Antonucci JM, McKinney JE, Stansbury JW. Resin modified glass-ionomer cement United States Patent US 160856 1988.

5. Wilson AD. Resin-modified glass ionomer cements Int J Prosthodont 1990; 3 : 425-9.

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Clinical effectiveness of pit and fissure sealants in primary and permanent teeth of children and adolescents: an umbrella review;European Archives of Paediatric Dentistry;2024-03-15

2. Sealants for preventing dental caries in primary teeth;Cochrane Database of Systematic Reviews;2022-02-11

3. Sealants for preventing dental caries in primary teeth;Cochrane Database of Systematic Reviews;2018-03-13

4. Composite adhesive restorative materials for dental applications;Non-Metallic Biomaterials for Tooth Repair and Replacement;2013

5. Improving some selected properties of dental polyacid-modified composite resins;Dental Materials;2011-10

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3