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ID:36516720
大小:736.70 KB
页数:53页
时间:2019-05-11
《模型精度影响因素的探讨》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、上海交通大学硕士学位论文模型精度影响因素的探讨姓名:施宏燕申请学位级别:硕士专业:口腔临床医学指导教师:张保卫20080501上海交通大学医学院七年制学位硕士论文摘要结果:1.右上第一磨牙预备体琼脂/藻酸盐印模在潮湿的塑料袋中密封12min后灌制的石膏模型,其精度与金属试件无显著性差异(P>0.05)。浸水中或用湿纸巾包裹12min后灌制的模型精度与金属试件存在显著性差异(P<0.05)。2.在缺失不同数目上前牙的牙列缺损中,琼脂/藻酸盐印模在潮湿塑料袋中密封12min后灌模,石膏模型精度与树脂试件存在显著性差异(P<0.05),即刻灌模石膏模型精度与树脂试件间无统计学差异(P>0.05)。
2、硅橡胶印模无论即刻或放置于空气中12min后灌模,其模型精度与树脂试件均无显著性差异(P>0.05)。结论:1.单个牙齿预备体的琼脂/藻酸盐印模密封于潮湿的塑料袋中,可放置12min再灌模。2.单缺隙上前牙牙列缺损的琼脂/藻酸盐印模,需即刻灌模,放置12min后精度改变,P<0.05。3.上前牙单缺隙牙列缺损的印模,若无法即刻灌模,应选用硅橡胶取模。关键词:印模材料,模型精度,模型测量II上海交通大学医学院七年制学位硕士论文ABSTRACTTHESTUDYONFACTORSAFFECTINGTHEMODELACCURACYABSTRACTPurpose:Comparethemodelaccu
3、racyofagar/alginateimpressionsaffectedbydifferentstorageconditions;comparethemodelaccuracyofdifferentimpressionmaterials,agar/alginateimpressionsandadditionsilicones,whicharemadeatthesamelengthofdentaljawdefectandstoragetime,theaimofthestudyistoinvestigatetherelationshipbetweenthemodelaccuracyandki
4、ndsofimpressionmaterials、storagetimeandstorageconditionofimpressions、thelengthofdentaljawdefect.Theresultoftheexperimentcanprovidehelpforclinicalapplication.Methods:1.Fixthemetalpreparationofrightmaxillaryfirstmolarandsimulatedentaljawdefectofone、two、fouranteriorteethinstandarddentalarchmodel.Makea
5、gar/alginateimpressionsofrightmaxillaryfirstmolarafterpreparation,divideinto3groupsaccordingtodifferentstorageconditions,immersedinthewater、encapsulatedwithdamppapertowelsandsealedatmoistureplasticbag,10impressionspercondition,30impressionsinall,pouredafter12min.Makedentalarchimpressionswithagar/al
6、ginateIII上海交通大学医学院七年制学位硕士论文ABSTRACTandadditionsiliconeimpressionmaterialsofthreedifferentnumberofmaxillaryanteriorteethlost,pouredatonceand12minlater,10impressionspermaterial,120inall.2.Gypsummodelmeasurement:①separatethediestonesafter1h,andmeasureatleast24hlater.②dressthediestones,onlythepreparati
7、onofrightmaxillaryfirstmolarleft,anddresstotheleftandrightsecondpremolarofthediestonesofmaxillaryanteriorteethlost.③measuretheheightandwidthofarbitraryaxialsurfaceoftherightmaxillaryfirstmolarafterpreparati
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