三种消毒方法对石膏模型压缩强度的影响  

INFLUENCES OF THREE KINDS OF DISINFECTION METHODS ON COMPRESSIVE STRENGTH OF GYPSUM MODELS

作　　者：吴世莲[1] 陆林侦[2] 曹明国[1] 查光玉[1] 

机构地区：[1]丽水学院医学院,浙江丽水323000 [2]丽水学院机械电子与建筑工程学院

出　　处：《中国消毒学杂志》2011年第6期697-698,共2页Chinese Journal of Disinfection

摘　　要：目的研究三种消毒方法对口腔石膏模型压缩强度的影响。方法采用物理多功能试验台,对微波消毒法、压力蒸汽灭菌法和紫外线照射法消毒后的口腔石膏模型压缩强度进行了测试。结果微波消毒法处理后的熟石膏、硬石膏和超硬石膏模型等种类石膏模型的压缩强度均略低于对照组压缩强度,但两组数据差异没有显著统计学意义(p>0.05);紫外线照射消毒法除超硬石膏模型之外,对另两种模型压缩强度也略有降低。压力蒸汽灭菌处理后的三种石膏模型的压缩强度明显低于对照,两组数据比较差异有显著统计学意义(p<0.01)。结论微波加热及紫外线照射消毒后对口腔石膏模型压缩强度影响不明显,但压力蒸汽灭菌对口腔石膏模型有明显影响。Objective To study the influences of three kinds of disinfection methods on compressive strength of oral gypsum models.Methods On physical multi-function experimental bench the compressive strength of oral gypsum models was tested after microwave disinfection,pressure steam sterilization and ultraviolet irradiation disinfection.Results The compressive strength of three kinds of gypsum models including plaster,dental stone,high strength dental stone treated by microwave disinfection was slightly lower than that of the control group,but the difference had no statistical significance（P 0.05）.In addition to the gypsum models of high strength dental stone,the compressive strength of the other two kinds of gypsum models treated by ultraviolet irradiation disinfection was slightly lower too.The compressive strength of three kinds of gypsum models treated by pressure steam sterilization was significantly lower than that of the control group.Differences between the two groups of data were statistically significant（P 0.01）.Conclusion Disinfection by microwave heating and ultraviolet irradiation do not obviously affect the compressive strength of oral gypsum models,but disinfection by pressure steam sterilization obviously affect the compressive strength of oral gypsum models.

关 键 词：微波消毒 紫外线消毒 压力蒸汽灭菌 口腔石膏模型 压缩强度 

分 类 号：R187.2[医药卫生—流行病学]