自制硅橡胶印模材料对铸造中熔全冠适合性研究
Effects of a New Silicone Rubber Impression Material on the Fit of Non-precious Alloy Crowns
作者：范新平,李明哲,赵云凤,魏伟
Author：Fan Xinping, Zhao Yunfeng, Wei Wei et al
收稿日期：2002-04-25 年卷（期）页码：2002,20(02):98-
期刊名称：华西口腔医学杂志
Journal Name：West China Journal of Stomatology
关键字：硅橡胶印模材料,全冠,面浮升量,边缘适合性,
Key words：marginal fit,inner fit,silicone impression material,
基金项目：
中文摘要
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。
英文摘要
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.
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