树脂修复材料理化特征及其在龋齿临床应用中的评价

Physiochemical characteristics of resin restorative material and its clinical application in repairing dental caries

目的:评价龋齿树脂修复充填材料的理化性能及其临床应用。方法:应用计算机检索Medline1995-01/2010-01期间的相关文章,检索词为"dental caries,resin,restoration,dental pulp,wear resistance,hardness",并限定文章语言种类为English。同时计算机检索中国期刊全文数据库1995-01/2010-01期间的相关文章,检索词为"龋齿,树脂,修复,牙髓,耐磨性,硬度",并限定文章语言种类为中文。结果:树脂充填材料是一种美容修复材料,树脂材料的颜色接近牙齿原色,修复后效果非常美观,且与釉质有较强的粘合力,但其机械性能低于银汞合金。普通复合树脂材料使用的无机填料有晶体石英、气相二氧化硅等,普遍存在机械强度不足、耐磨性差、聚合体积收缩较大等缺点。近年来树脂材料取得了很多突破,一些新型的复合树脂相继问世,机械性能较以往有了很大提高,但至今仍未达到理想的要求。如果采用聚合物基金属粒子纳米复合树脂,如纳米氧化钽、氧化锆复合树脂,既可增加强度,降低聚合收缩,提高X射线阻射性,还具有优良的半透明性和表面性能,是最有希望的新型复合树脂。结论:目前,临床龋齿充填应用的树脂材料种类繁多,各有其优缺点,新型复合树脂材料凭借其独特的优势,将有广泛的应用和发展前景。

OBJECTIVE：To evaluate the physiochemical characteristics of resin restorative material and its clinical application in repairing dental caries.METHODS：Related papers published between January 1995 and January 2010 were searched using key words of＂dental caries,resin,restoration,dental pulp,wear resistance and hardness＂both in English and Chinese from databases of Medline and Chinese Journal Full-text Database.RESULTS：As a kind of cosmetology repair material,the color of resin restorative material is similar to the natural teeth,and exhibits strong bonding force to enamel.But,the mechanical features of which is smaller than dental amalgam.The composite resin commonly comprised crystalline quartz and fumed silica,which had advantages of insufficient mechanical strength,poor wear resistance and great polymerization shrinkage.Recently,the research of resin gained breakthrough and newly typed composite resin was developed.Though the mechanical strength has been notably improved,it is still far from the requirement.The polymer-metal nano-resins,such as tantalum oxide nanoparticles and zirconia-based resin,can not only enhance the strength,decrease polymerization shrinkage,but also exhibit good appearance and surface properties,therefore are the most promising materials.CONCLUSION：At present,plenty of resin restorative materials were used in caries fillings with own advantages and disadvantages.Novel composite resin would be widely used in future due to its unique superiority.