摘要
目的:探讨消毒液浸泡3种牙科石膏模型后对其尺寸稳定性的影响。方法:用临床常用的3种不同类型石膏(Ⅲ型、Ⅳ型、Ⅴ型)制作50 mm×15 mm×10 mm 3组共24个试件。1 h后脱模,静置24 h后,用数显卡尺测量石膏模型尺寸。以蒸馏水浸泡作为对照,设戊二醛消毒剂、麦瑞斯消毒液浸泡为实验组,浸泡0.5 h取出,静置0.5、1、2、24 h后,用数显卡尺测量模型尺寸。采用SPSS10.0软件包对数据进行统计学分析。结果:浸泡前,3组石膏模型长度分别为(50.073±0.017)mm、(50.048±0.015)mm和(50.027±0.015)mm;浸泡后,各实验组、各时间点的模型尺寸基本无变化,石膏模型的尺寸变化小于0.01%。结论:消毒液浸泡对牙科石膏模型尺寸基本无影响。
PURPOSE： To study the influence of disinfectant soaking on the dimensional stability of three kinds of dental gypsum model. METHODS： Three commonly used gypsums （ type m , Iv, v type） in clinic were used to make 24 specimens for 50 mm×l5 mm×10 mm in size. One hour after release, the specimens were placed for 24 h. A digital caliper was used to measure the size of the gypsum model. Distilled water immersion was as used control, glutaraldehyde disinfectant and Metrix CaviCide disinfectant soaking were used for the experimental group. After soaking for 0.5h, the gypsum models were removed and placed for 0.5 h, 1 h, 2 h, 24 h. The size of the models was measured again using the same method. The data was analyzed with SPSS10.0 software package. RESULTS： The initial gypsum model length was （50.07_＋0.017） mm, （50.048_＋0.015） mm and （50.027_＋0.015） mm. After soaking for different times, the size of the model changed little, and the dimensions changed less than 0.01%. CONCLUSION： The results show that disinfectant soaking has no significant effect on dental model dimensions. Supported by Research Fund of Science and Technology Commission of Shanghai Municipality （08DZ2271100,09411954700）,Shanghai Leading Academic Discipline Project （$30206,T0202） and Foundation of Shanghai Municipal Health Bureau （2010268）.
出处
《上海口腔医学》
CAS
CSCD
北大核心
2012年第6期656-658,共3页
Shanghai Journal of Stomatology
基金
上海市科学技术委员会资助项目(08DZ2271100,09411954700)
上海市重点(特色)学科建设项目(T0202,S30206)
上海市卫生局项目(2010268)~~
关键词
石膏模型
戊二醛消毒剂
麦瑞斯消毒液
Gypsum model
Glutaraldehyde disinfectant
Metrix CaviCide disinfectant
