微波消毒對印模精度的影響研究.pdf

1、青島大學碩士學位論文微波消毒對印模精度的影響研究姓名：劉民申請學位級別：碩士專業(yè)：口腔臨床醫(yī)學（修復科）指導教師：王雪20050521TheeffectofmicrowavedisinfectiononthedimensionalstabilityofdentalimpressionmaterialsAbstract0bjective：Toevaluatetheeffectofmicrowavetechniqueonthedimensi

2、onalstabilityofdifferentdentalimpressionmaterialsMaterialsandmethods：Differentwattageanddifferentirradiationtimewereusedinamicrowaveovenanddifferentcooperationcomplexwereselectedtodisinfectadditionaltypesiliconerubber、co

3、ndensationrubberandalgirmteimpressionsmaterialsFortyfiveplasterreplicationmodelsforeachkindofdentalimpressionmaterialsweremadeonthesamemetalmastercastrespectivelyandweredividedinto9groups，onewascontrolgroup，withoutanydis

4、infectionprocesses；fourgroupswereputinto400mldistilledwaterandweredisinfectedbymicrowaveradiationsetat700Wfor1and2minutes，at380Wfor2and4minutes；twogroupswereputinto400ml05％bromogeraminesolutionandweredisinfectedbymicrowa

5、veradiationsetat700Wfor1minutes，at380Wfor4minutes；andtwogroupswereputinto400ml05％chlorhexidinesolutionandweredisinfectedbymicrowaveradiationsetat700Wfor1minutes，at380Wfor4ntinutesAftertreatments，impressionswerepoured，ver

6、ticalandhorizontaldimensionsbetweenlandmarksontheplastercastsweremeasuredwithallmicroscopeResult：①Thedimensionalpercentagechangesofthegroupsdisinfectedbymicrowaveanddistilledwaterwerefound：一O338％～0299％ofcondensationrubbe

7、rgroups；一O413％～0318％ofadditionaltypesiliconerubbergroups；0288％～0303％ofalginateimpressionsmaterialsgroups②ThedimensionalpercentagechangesofthegroupsdisinfectedbymicrowaveandO5％bromogeraminesolutionwerefound：0173％0390％ofco