牙体牙髓学龋病的治疗课件

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1、OperativeDentistry郑沛OperativeDentistryOperativedentistryistheartandscienceofthediagnosis,treatment,andprognosisofdefectsofteethwhichdonotrequirefullcoveragerestorationsforcorrection.enamelpulpodentinalcomplexcementumPeriodontal牙体修复原则去净龋坏牙体组织保守治疗的原则抗力形和固位形充填材料的选择性能要求物理和机

2、械，化学，生物学选择要点牙齿部位，窝洞部位和咬合力，病人情况，其他因素CavityPreparationThemechanicalalterationofadefective,injured,ordiseasedtoothinordertobestreceivearestorativematerialwhichwillre-establishahealthystateforthetoothincludingestheticcorrectionswhereindicated,alongwithnormalformandfunction.

3、ClassificationofcavityCavitiesmaybeclassifiedaccordingtothelocationwherethecariouslesionbeginsClassⅠClassⅡClassⅢClassⅣClassⅤClassⅥ—G.V.Blackin1908ClassIAllpitandfissurecavitiesareClassI.Cavitiesonocclusalsurface;Cavitiesonocclusaltwo-thirdsofthefacialandlingualsurfaceso

4、fmolars;Cavitiesonlingualsurfaceofmaxillaryincisor.ClassIIAcavityoccurringontheproximalsurfaceofposteriorteethareClassII.MOmesialandocclusalDOdistalandocclusalMODmesial,occlusalanddistaClassIIICavitiesontheproximalsurfacesofanteriorteeththatdonotinvolvetheincisalanglesa

5、reClassIII.ClassIVCavitiesontheproximalsurfacesofanteriorteeththatdoinvolvetheincisalanglesareClassIV.ClassVCavitiesonthegingivalthirdofthefacialorlingualsurfacesofallteeth(notpitandfissurecavities)areClassV.ClassVICavitiesontheincisaledgeofanteriorteethortheocclusalcus

6、pheightsofposteriorteethareClassVI.CavitySimplecavity:onlyonetoothsurfaceisinvolved.Compoundcavity:twosurfacesareinvolved.Complexcavity:threeormoresurfacesareinvolved.CavityStructurewallsanglescavityWallsInternalwalls:apreparedcavitysurfacethatdoesnotextendtotheexternal

7、toothsurface.Axialwalls:aninternalwallparallelwiththelongaxisofthetoothandocclusalofthetooth.Pulpalwalls:aninternalwallthatisbothperpendiculartothelongaxisofthetoothandocclusalofthepulp.asideorsurfaceofthecavitypreparationthataidsinenclosingtherestorativematerial.WallsE

8、xternalwalls:apreparedcavitysurfacethatextendtotheexternaltoothsurface.Theexternalwallstakesthenameofthetooths