最新学习龋病学需要了解的人74教学讲义PPT课件.ppt

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1、学习龋病学需要了解的人74岳松龄王满恩史俊南刘正樊明文李玉晶王嘉德周学东高学军凌均棨刘天佳学习龋病学需要了解的人史俊南刘正樊明文李玉晶周学东PhotosofdentalcariesPhotosofdentalcaries'Caries'isLatinfor'rot'or'rotten'.Dentalcariesmeansrottenteeth.CariesisthenounwhichnamesthediseaseCariousistheadjective,not'acaries‘,'acariousarea'or'anareaofcaries'.D

2、entalcariescanbedefinedasChronicprogressivedeconstructivediseaseofharddentaltissuesBacterialinfecteddiseasescausedbyspecificbacteriaareversiblemultifactorialprocessoftoothdemineralizationandremineralization.DentalcariesDentalcaries,abacterialinfection,maybedefineasaposteruptivepatho

3、logicalprocessofexternalorigin,involvingthesofteningoftheharddentaltissueandproceedingtocavityformation.Thisisdistinctfromthedissolutionoftheharddentaltissuesofanuneruptedtoothwhichisnotdentalcariesbuttoothresorption.Thecariousprocessapathologicalprocessoflocalizeddestructionofcalci

4、fiedtoothtissuesbyacidsproducedbyorganisms.Etiologicallycariesisconsideredamulti-factorialdisease,whichinvolvesinterplaybetweenthehost(salivaandteeth)microorganisms(streptococcusmutans),andthesubstrate(dietarycarbohydratesucrose),withtheproductionofLacticacid.Dentalplaque(Bio-film)s

5、ervesasthemediumforcariesdevelopment.BasicpathologicalchangesdemineralizationofinorganictissuesoftoothDisintegrationoftheorganictissuesoftoothinvolvesenamel,dentin,cementumEpidemiologyofdentalcaries流行病学Prevalencerate（患病率）：istheproportionofapopulationaffectedbyadiseaseofaconditionat

6、onepointtime.Incidence（发病率）：isamesurementoftherateatwhichadiseaseprogressestheincreaseordecreaseinthenumberofnewcasesoccurringinapopulationwithinthesametimeperiodMeasuringcariesactivityDMFindexDthemeannumberofdecayedteethwithuntreatedcariouslesionsMthemeannumberofteethwhichhavebeene

7、xtractedandarethereforemissingFthemeannumberoffilledteethDMF(T)todenotedecayed,missing,andfilledteethDMF(S)todenotedecayed,missing,andfilledsurfacesinpermanentteethdmf(t)dmf(s)similarindicesfortheprimarydentitionFrequencydistributionofdentalcariesaccordingtovarioustoothlocationperma

8、nentdentitionDecidu