熔模材料对铸造嵌体精度的影响研究  

The effect of different pattern materials on accuracy of casting MOD inlay

作　　者：翟晓棠[1] 王雪[2] 

机构地区：[1]广东省深圳职业技术学院,口腔专业518055 [2]青岛大学医学院附属医院口腔修复科

出　　处：《现代口腔医学杂志》2009年第6期619-622,共4页Journal of Modern Stomatology

摘　　要：目的研究不同熔模材料对铸造嵌体精度的影响。方法采用5种熔模材料:Pattern resin、嵌体蜡、普通蜡、自凝塑料、Pr(Pattern resin)+嵌体蜡制作后牙MOD嵌体熔模,然后将熔模包埋、焙烧、铸造,分别用数字万能工具测定显微镜测量铸造前、后熔模底边与模具间距离。结果铸造前、后Pattern resin的底边与模具间距离最小,和其余各组间有显著性差异(P<0.05);自凝树脂与普通蜡的底边间距最大,和其余各组间有显著性差异(P<0.05);每种熔模材料铸造后底边间距明显大于铸造前(P<0.05)。结论在研究的五种熔模材料中,Patternresin的变形最小,尺寸最稳定;应用Pattern resin制作的嵌体精度最高。Objective To compare the effect of different pattern materials on the east accuracy of MOD inlay. Methods Five different pattern materials： Pattern resin, inlay wax, base wax, Pattern resin ＋ inlay wax, self-curing resin were fabricated, and then invested, burned and cast, the discrepancy at marginal regions was measured with a traveling microscope before and after casting. Results Pattern resin demonstrated the smallest shrinkage before and after casting, showed significant difference with other groups （ P 〈 0.05 ）. The greatest shrinkage was found in self - curing resin and base wax, and showed significant difference with other groups （ P 〈 0.05 ）. The marginal discrepancy was smaller before casting than that of being casted （ P 〈 0.05 ）. Conclusion Pattern resin exhibited smaller shrinkage than other pattern materials before casting; the inlay fabricated by pattern resin was most aceurate.

关 键 词：熔模材料 铸造 精度 嵌体 PATTERN RESIN 

分 类 号：R783.6[医药卫生—口腔医学]