口腔印模消毒处理对模型精度的影响  

The effect of disinfection on dimension stability of impressions

作　　者：陆金星[1] 章非敏[1] 陈亚明[1] 钱敏[1] 

机构地区：[1]南京医科大学附属口腔医院口腔修复科,江苏南京210029

出　　处：《上海口腔医学》2004年第4期290-292,共3页Shanghai Journal of Stomatology

基　　金：南京医科大学科技发展基金(8519)

摘　　要：目的:比较藻酸钾印模、琼脂藻酸钾联合印模和Express Putty硅橡胶印模分别用2％戊二醛、1％84消毒液不同方式、不同时间处理后对模型精度的影响。方法:用20mm×20mm×40mm标准试件制取藻酸钾、琼脂和硅橡胶印模。每种材料取45个,分9组,每组5个;一组用清水冲洗作对照组,其余各组分别用2％戊二醛、1％84消毒液喷涂后静止10min或浸泡10min、20min、30min后用超硬石膏灌模,静止2h后用螺旋测位仪测量模型。实验结果用SPSS 11.0统计软件包进行统计分析。结果:清水冲洗立即灌模与喷涂消毒处理相比,无显著性差异(P>0.05,);藻酸钾和琼脂印模材料浸泡前与浸泡后各时段相比,均有显著差异,且随着时间的增加,产生统计学显著意义的尺寸变化(P<0.01):Express Putty硅橡胶印模材料浸泡前与浸泡后各时段无显著性差异(P>0.05);2％戊二醛浸泡消毒对各种印模材料精度的影响与1％84消毒液相比,无显著性差异(P>0.05)。结论:2％戊二醛、1％84消毒液浸泡消毒藻酸钾印模、琼脂藻酸钾联合印模和Express Putty硅橡胶印模,在20min内不影响修复体制作的精度,可试用于临床。PURPOSE: To measure the effect of disinfection on dimension stability of alginate, hydrocolloid, and Express putty impressions which were separately immersed in 2% glutaraldehyde solution and 1% 84 disinfector. METHODS: Alginate, hydrocolloid, and Express putty impressions were made by 20 mm×20 mm×40 mm standards test wares. There were 45 in each kind of test wares. They were divided into 9 groups and 5 pieces in every group. Among them, one group using clear water to flush acted as the matched control,the other groups received respectively 2% glutaraldehyde solution and 1% 84 disinfector immersed in 10 minutes, 20 minutes, 30 minutes. After two hours, the spiral instrument was used to measure the model. The experiment data were analyzed by using the SPSS 11.0 statistic software package. RESULTS: There was no significant difference in pure water flush and spraying treatment respectively .There was significant difference for alginate and hydrocolloid impression was immersed before and after.There was no significant difference for Express putty silicon rubber impression materials before and after immersion.There was no significant difference in 2% glutaraldehyde solution and 1% 84 disinfector when impressions were immersed in. CONCLUSION: Alginate,hydrocolloid and Express putty impressions immersed in 2% glutaraldehyde solution and 1% 84 disinfector separately for 20 minutes does not affect the accuracy, and can be used clinically.

关 键 词：印模 消毒 精度 

分 类 号：R783[医药卫生—口腔医学]