牙周病学医学英语

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1、Unit10PeriodontalDiseaseZengsujuanDentalHospitalofGuangzhouMedicalCollege1Thecharacteristicfeatureofperiodontitisisalossoftheconnectivetissueandalveolarstucture,termedalossofattachment.periodontitis牙周炎theconnectivetissue结缔组织alveolar牙槽的2Gingivalinflammationisacommonconcurrentfeature.Gingivalinflamm

2、ation：牙龈炎concurrentfeature：伴发症状3Thislosswillbeevidencedbyanapicalmigrationofthejunctionalepithelium,whichcanresultinaperiodontalpocket(and/orgingivalrecession)coincideswiththatapicalmigration.evidence：表现apicalmigration：根向迁移thejunctionalepithelium：结合上皮periondontalpocket：牙周袋coincideswith:与……一致4Gingiv

3、itisisusuallyaprecursortoperiodontitis,butnotallgingivitisprogressestoperiodontitis.Precursor:先兆、前兆5Periodontitisresultsfromahostresponsetomicrobialplaque;however,mechanismsforitsinitiationandprogressionarestillbeingstudied.Resultfrom:起因于Host;大量的mechanism：机制initiation6Thetermofperiodontaldisease

4、activityreferstothestageofthediseasecharacterizedbylossofperiodontalattachment.Propose:提议Progression：进展periodontalattachment：牙周附着7Itimpliesthatthenaturalhistoryofperiodontaldiseasehasperiodsofactivedestructionandperiodsofrelativeinactivity,althoughchronicinflammationpersists.Destruction:破坏、消灭8Coto

5、n(1989)summarizesthethreetheoriesofperiodontaldiseaseactivityas:①thecontinuousparadigmsthatimpliesalow,constantprogressionofperiodontaldegenerationsummarizes：总结paradigm：范例degeneration：退化、恶化Threemodelshavebeenproposedtoexplaintheprogressionofperiodontitis.9②Therandombursttheorythatimpliesthatsho

6、rtperiodsofdestructionarefollowedbyperiodsofnodestruction,occurringrandomlydestruction：消灭randomly：随机地10③Theasynchronousmultiplebursttheorythatimpliesthatperiodontaldiseaseactivity,andresultantdestructionoccurswithinaspecificperiodoflifeandisfollowedbyremission.asynchronous：不同时存在性，异步的resultant：必然产生

7、的remission：减轻、平息11Loeandcoworker(1986)assertthattherateofprogressvariesindifferentsites,atdifferentages,andbetweenindividualsandgroups.12Theperiodontitislesionprogressessteadilyovertime,eventhoughtheremayb