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1、大連醫(yī)科大學(xué)碩士學(xué)位論文Theapplicationofdifferentgingivalretractionmethodsforporcelain·fixedprosthodonticsMasterdegreecandidate：YangYangSupervisor：AssociateProfessorLiuYangVice·supervisor：AssociateProfessorLiuYangMajor：MasterofStomatologyAbstractObjective：Thisresearcha
2、imstocompareclinicaleffectsregardingseveralgingivalretractionmethodsinporcelain—fixedprosthodontics．MaterialandMethods：37patientsrequiringporcelain—fixedprosthesiswereincludedinthestudyfromMar．2012toMar．2013，Totally60teeth(anteriorteeth：38posteriorteeth：22)
3、withhealthyperiodontalconditionwereevaluated，amongwhich36teethwithnormalclinicalcrownheightaswellaswithoutgingivaldefect；14residualroots；10teethwithshortclinicalcrownheight．Afterpreparation，werandomlydividedallofteethpreparedintofourgroupswithfourgingivalre
4、tractionmethods(thesinglecordtechnique；thedoublecordtechnique；retractionassistedbytemporarycrown；gingivalretractionpaste)andeachgroupcontained15teeth．Afterthegingivalcontraction，makingimpressionwithsiliconrubberoragarandalginatecombinationimpressionmaterial
5、immediately，thenwemadeplatercast．Finallyalltheteeth、gums、impressionsandcastswerevisuallyinspectedandevaluatedbyonedentist．Results：Inthesampleofteethwithnormalclinicalcrownheightaswellaswithoutgingivaldefect，therateuptostandardofthedoublecordtechnique，retrac
6、tionassistedbytemporarycrown，gingivalretractionpastewashigherthanthesinglecordtechniquerespectively．Whileretractionassistedbytemporarycrown，gingivalretractionpastereachedhigherrateinthesampleofresidualrootsandteethwithshort’clinicalcrownheight．大連醫(yī)科大學(xué)碩士學(xué)位論文C
7、onclusion：thedoublecordtechnique，retractionassistedbytemporarycrown，gingivalretractionpastecouldachievedesiredeffectofgingivalretraction；Eitherthemethodofretractionassistedbytemporarycrownorgingivalretractionpastereachesbettereffectinthecaseofresidualrootan
8、dtoothwithshortcrownheight．Keywords：TemporarycrownGingivalretractioncordGingivalretraction大連醫(yī)科大學(xué)碩士學(xué)位論文不同排齦方法在口腔瓷固定修復(fù)中的應(yīng)用碩士生姓名：楊揚(yáng)指導(dǎo)教師：劉洋副教授指導(dǎo)小組：劉洋副教授專業(yè)名稱：口腔醫(yī)學(xué)碩士刖舌修復(fù)體邊緣適合性很大程度上決定著修復(fù)的成敗，而合理的排齦會極大程度的減少牙齦出血
