华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

自制硅橡胶印模材料对铸造中熔全冠适合性研究

范新平,李明哲,赵云凤,魏伟   

  1. 610041 四川大学华西口腔医院(范新平,赵云凤, 魏 伟),成都军区总医院口腔科(李明哲)
  • 收稿日期:2002-04-25 修回日期:2002-04-25 出版日期:2002-04-20 发布日期:2002-04-20

Effects of a New Silicone Rubber Impression Material on the Fit of Non-precious Alloy Crowns

Fan Xinping, Zhao Yunfeng, Wei Wei et al   

  1. Fan Xinping, Zhao Yunfeng, Wei Wei College of Stomatology,West China Univerisity of Medical Sciences Li Mingzhe Department of Stomatology,Chengdu Military General Hospital
  • Received:2002-04-25 Revised:2002-04-25 Online:2002-04-20 Published:2002-04-20

摘要:

目的:初步探讨自制国产硅橡胶印模材料对全冠的适合性。方法:将12个类复合树脂的高分子材料主模型随机分成两组,分别用国产硅橡胶和Exaflex硅橡胶两种印模材料制作SDA-Ⅱ型中熔全冠,分别在体视显微镜下测量边缘密合度情况和面浮升量。结果:国产硅橡胶组的边缘间隙(marginal open)为01102 mm?01019 mm,面浮升量(inner fit)为01091 mm?01022 mm,Exaflex的边缘间隙为01085 mm?01016 mm,面浮升量为01074 mm?01034 mm。国产硅橡胶组与Exaflex组边缘适合性和面浮升量无显著性差别(P>0105)。结论:自制硅橡胶印模材料取模制作SDA-Ⅱ型全冠的适合性在临床上可接受。

关键词: 硅橡胶印模材料, 全冠, 面浮升量, 边缘适合性

Abstract:

Objective:The purpose of this study was to investigate effects of a new silicone rubber impression material on the fit of SDA-Ⅱalloy crowns.Methods:Totally twelve tooth-preparation analogswere divided into sixgroups. Two kinds of impressionma- terial (Jeltrate Exaflex) and a new silicone robber impression material were used. A total of 12 impressionswere obtained from 12 master models with the 1-step technique directly. And then the fitness of SDA-Ⅱalloy crownswas examined. The measurements were recorded at 3 points for a marginal fit and inner fit evaluation respectively.Results:There was no statistically significant dif- ference in marginal open and inner fit of SDA-Ⅱalloy crowns between both impression materials (P>0105).Conclusion:The SDA-Ⅱalloy crown fabricated by using the new impression material yields acceptable marginal fit and inner fit.

Key words: marginal fit, inner fit, silicone impression material