最新学习龋病学需要了解的人98教学讲义PPT.ppt

《最新学习龋病学需要了解的人98教学讲义PPT.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、学习龋病学需要了解的人98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‘,'acar

2、iousarea'or'anareaofcaries'.DentalcariescanbedefinedasChronicprogressivedeconstructivediseaseofharddentaltissuesBacterialinfecteddiseasescausedbyspecificbacteriaareversiblemultifactorialprocessoftoothdemineralizationandremineralization.DentalcariesDental

3、caries,abacterialinfection,maybedefineasaposteruptivepathologicalprocessofexternalorigin,involvingthesofteningoftheharddentaltissueandproceedingtocavityformation.Thisisdistinctfromthedissolutionoftheharddentaltissuesofanuneruptedtoothwhichisnotdentalcari

4、esbuttoothresorption.Thecariousprocessapathologicalprocessoflocalizeddestructionofcalcifiedtoothtissuesbyacidsproducedbyorganisms.Etiologicallycariesisconsideredamulti-factorialdisease,whichinvolvesinterplaybetweenthehost(salivaandteeth)microorganisms(st

5、reptococcusmutans),andthesubstrate(dietarycarbohydratesucrose),withtheproductionofLacticacid.Dentalplaque(Bio-film)servesasthemediumforcariesdevelopment.BasicpathologicalchangesdemineralizationofinorganictissuesoftoothDisintegrationoftheorganictissuesoft

6、oothinvolvesenamel,dentin,cementumEpidemiologyofdentalcaries流行病学Prevalencerate（患病率）：istheproportionofapopulationaffectedbyadiseaseofaconditionatonepointtime.Incidence（发病率）：isamesurementoftherateatwhichadiseaseprogressestheincreaseordecreaseinthenumberof

7、newcasesoccurringinapopulationwithinthesametimeperiodMeasuringcariesactivityDMFindexDthemeannumberofdecayedteethwithuntreatedcariouslesionsMthemeannumberofteethwhichhavebeenextractedandarethereforemissingFthemeannumberoffilledteethDMF(T)todenotedecayed,m

8、issing,andfilledteethDMF(S)todenotedecayed,missing,andfilledsurfacesinpermanentteethdmf(t)dmf(s)similarindicesfortheprimarydentitionFrequencydistributionofdentalcariesaccordingtovarioustoothlocationpermanentdentitionDecidu