安徽省烟草专卖局(公司)基本建设

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1、DENTALARTICULATION,FACE-BOWANDARTICULATORSDr.WaseemBahjatMushtahaSpecializedinprosthodontics1-dentalarticulationDentalarticulation:Itmeansthecontactrelationshipsofmaxillaryandmandibularteethastheymoveagainsteachother.Thisisadynamicprocess.Articulator:Itis

2、amechanicalinstrumentthatrepresentsthetempomandibularjointsandjawmembers,towhichmaxillaryandmandibularcastmaybeattachedtosimulatesomeorall-mandibularmovements.Occlusion:Itisthestaticrelationship(processofclosure)betweentheincisingormasticating(occluding)s

3、urfacesofthemaxillaryandmandibularteethwhentheyareincontact.Centricocclusion:Itistherelationofopposingocclusalsurfaceswhichprovidesthemaximumplannedcontactandorintercuspation.Centricrelation:Itistherelationofthemandibletothemaxillawhenthecondylesareinupp

4、ermostandrearmostpositionintheglenoidfossaatagivendegreeofverticaldimension(jawseparation).Thispositionmaynotberecordedinthepresenceofdysfunctionofthemasticatorysystem.Centricoccludingrelation:Itisatermsometimesusedtodescribetheconditioninwhichthejawsarei

5、ncentricrelationandtheteethorocclusalsurfacesincentricocclusion.Anatomicalarticulation:Itisanocclusalarrangementwheretheposteriorartificialteethhavemasticatorysurfaces(canmakenormalmasticatorymovementswithcomfortandefficiency)thatcloselyresemblethoseofthe

6、naturalhealthydentitionandarticulatewithsimilarnaturalorartificialsurfaces.Balancedocclusion:Itmeansthattheartificialteetharesetupsothatasmanyteethaspossibleareinocclusioninanyocclusalrelationship.Balancedarticulation:Itisbilateral,simultaneous,anterior,a

7、ndposteriorocclusalcontactofteethincentricandeccentricpositions.Itmeansanarrangementoftheteethsothatinanyocclusalrelationshipasmanyteethaspossibleareinocclusion,andwhenchangingfromonerelationshiptoanothertheymovewithasmooth,slidingmotion,freefromcuspalint

8、erferenceandmaintainingevencontactCurveofSpee(anteroposteriorcurve):Itistheanatomiccurveestablishedbytheocclusalalignmentoftheteeth,asprojectedontothemedianplan,beginningwiththecusptipofthemandibularcanineandfollowi