口腔固定修复总论(英语).pptx

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1、RemoveablepartialdentureSummary01Removablepartialdentureisadentalprosthesisthatreplacesthelostnaturaldentitionandassociatedstructuresofmaxillaormandible;itcanberemovedconvenientlyfromthemouthbythepatient.Indication02Avarietyofdentitiondefects,especiallythosewithfreeendteeth.01Teethmi

2、ssingwithalveolarbone,jaworsofttissuedefect.02Theneedfortransitionaldentureintheprocessoftoothextractionhealing.03Periodontaldiseaseneedsactivesplintfixationforlooseningteeth.04Verticalocclusaldistanceistoolowduetoseverewearandtearontheocclusalsurfaceorlossofmanyteeth.05Afterextracti

3、on,makeanimmediatedentureorotherspecialneeds06formation03RestAnyunitofapartialdenturethatrestsonatoothsurfacetoprovideverticalsupportiscalledarest.01Maintainsestablishedocclusalrelationshipsbypreventingsettlingofthedenture.02Preventionoffoodimpactionandsometimes,itcanbeusedasrestorat

4、ionofocclusion03Maintainscomponentsintheirplannedpositions.Itswidthandthicknessshouldmeettherequirementsofmaterials.Thewidthis1/3ofmolars'dentaldiametersor1/2ofpremolars.Thelengthisusually1/4ofthemolar’mesiodistalor1/3ofthepremolar.Thethicknessisabout1~1.5mm.Retaineristhepartofremo

5、vablepartialdenturetoresistdislocationandobtainretention,supportandstabilityDirectretainersAuxiliarydirectretainer，mainlyenhancesthestabilityofdentureandpreventsthedenturefromwarping,swinging,rotatingandsinking.IndirectretainersThedirectretainerresiststhedisplacementofthedentureawayf

6、romthebaseandplaysamajorroleinretentioncontinuousclaspringclasphalfandhalfclasplongarmclaspcombindclaspmesio-restbuccalIrodclaspdistalmiddlepanelconnectorMajorconnectorsconnectsthecomponentsonthedenture,suchasclaspsandbrackets,withthemajorconnectorsandbase.MinorconnectorsAmajorconnec

7、toristheunitofpartialdenturethatconnectthepartsoftheprosthesislocatedononesideofthearchwiththoseontheoppositeside.PalatalplatelingualplateMajorconnectorsbaseplateThedenturebasesupportsartificialteethandeffectsthetransferofocclusalforcestosupportingoralstructures.Connection：Arrangeart

8、ificialteeth