正畸加载对自体移植牙的牙周组织影响的micro+ct分析

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1、山东大学硕士学位论文oppositesideunloadedasthecontrolgroup．Morphologicalobservation，analysisstructureofthedensityandmechanicsquantitativelyWehopetofindtheinfluenceoforthodonticloadtotransplantedteeth，andlookforacluetotreattheautotransplantedteethinclinic．Methods

2、8maledogswereselectedtopreparetheanimalautotransplantedteethmodel，whoseageswere12months，andtheirweightswere10—12kg．Autogenoustoothtransplantationwasdoneaftergeneralanesthesiabyintramuscularinjectionof2％ketaminehydrochlorideandSumianxin．Maxillarycentra

3、lincisorswerechosenforexperiment．Teethwereextractedcarefully,andthentransplantedthetoothofonesidetotheoppositetoothsocketwhichhadbeenmanagedtofitthedonorteeth．Ligatedthem、析t11theadjacentteeth。Dismantledthefixedequipmentsandundertookconventionalrootcan

4、altherapyafteroneweek．Loaded(30z)thelefttransplantedteethatthe1n．4廿land8mweekrespectively,andtherightunloadedwereascontr01．KilledtheanimalandthesamplewerescanedbyMicro—CTafterloadingonemonth．Analyzedthecorrelatedparametersandcompletedthree-dimensional

5、reconstruction．Comparedthedifferencesofperiodontalhealing，andconcludedtheinfluencesoftimeoforthodonticloadtothetransplantedteeth．ResuIts1Periodontalexamination11忙autotramplantedteethloadedandunloadeddidn’tappearcinchordisappear．Butthroughtheexaminatio

6、nbyprobing，wefoundthattheperiodontalpocketofautotransplantedteethloadedandunloadedallweredeeperthanpre—operationandlossofattachmentalsoappearedinsomelevel．Buttheperiodontalconditionofthenormalteethloadedorunlodedweresimilar．Thatindicatedautotransplant

7、ationhadmoreinfluencesthanorthodonticstoothmovement．2MicroCTdetection2．1morphosisobservationTheautotransplantedteethwerereconstructedinthreedimensionbyMicroCT．Wecouldfindthatthereisnoankylosis，somepartshadslightrootresorption,the气山东大学硕士学位论文alveolarbon

8、edensitydecreasedintheapicalzoneobviously,andtrabecularpatternWasdisorderedinthetransplantedteethloadedatthefirstweek．Thetransplantedteethloadedatthe矿weekhadnosignificantdifferencesmorphologicallywith8mweek．Therewereslightankylosisandrootresor