口腔龋病示教英文版1.DEFENITIONDentalcaries,alsoknownastoothdecay,cavities,orcaries,isabreakdownofteethduetoactivitiesofbacteria.DentalcariesAnchronicinfectiousdiseasewithprogressivedestructionoftooth.2.CAUSE:【fourfactors】1889,Miller:monhealthproblem.Dentalcariesisthemainreason!PrevalenceandincidenceAlmosteveryoneisaffectedbydentalcaries.ordingtothreebasicfactors:1、severityandrateofprogression2、anatomicalsite(involvingsite)3、lusalcariesRootcariesSmoothsurfacecariesLinearenamelcaries