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《擴(kuò)弓對(duì)犬牙槽突裂植骨區(qū)改建影響的CT研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、上海交通大學(xué)碩士學(xué)位論文擴(kuò)弓對(duì)犬牙槽突裂植骨區(qū)改建影響的CT研究姓名：姜寧申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：口腔臨床醫(yī)學(xué)指導(dǎo)教師：錢玉芬20080501上海交通大學(xué)碩士學(xué)位論文摘要第二部分?jǐn)U弓對(duì)植骨區(qū)骨改建影響的CT研究目的：探索擴(kuò)弓對(duì)牙槽突裂植骨區(qū)骨改建的影響。方法：選用24周齡Beagle犬4只，建立單側(cè)牙槽突裂植骨模型后隨機(jī)分為兩組，實(shí)驗(yàn)組于植骨術(shù)后8周安裝擴(kuò)弓器，擴(kuò)弓4周、保持4周，對(duì)照組不做處理。所有動(dòng)物于植骨術(shù)后8周、16周進(jìn)行螺旋CT掃描，評(píng)價(jià)植入骨骨量的變化。結(jié)果：實(shí)驗(yàn)組兩犬?dāng)U弓后骨量分別增加9.4
2、3%和7.29%，植骨區(qū)中段增加的量多于兩端；對(duì)照組骨量分別減少0.88%和4.30%。結(jié)論：擴(kuò)弓有利于減少牙槽突裂植骨區(qū)的吸收。關(guān)鍵詞：牙槽突裂，植骨，擴(kuò)弓，CTII上海交通大學(xué)碩士學(xué)位論文ABSTRACTTHEEFFECTOFMAXILLARYEXPANSIONONTHEAUTOGRAFTEDALVEOLUSINDOGS——ACOMPUTEDTOMOGRAPHICSTUDYABSTRACTAutograftisgenerallyacceptedtoreconstructalveolarbonedefe
3、ct.However，thetreatmentresultwasnotstableduetoresorptionofgraftedbonelackoffunctionalstimulationssuchasexpansionaftergraftingsurgery.Basedofthis，itisneededtofindoutthecharacteristicsofboneremodelingundermechanicalloadingforce.PARTONEANINVESTIGATIONOFDOGSA
4、FTERALVEOLARBONEGRAFTINGObjectives：Toinvestigateremodelingregulationsandresorptionfeaturesofautograftedalveolus.Methods：Afterextractionofthemaxillarysecondandthirdincisors，unilateralalveolarbonedefectsweresurgicallycreatedin2Beagledogs(24weeksold)within10
5、mminwidth，andautograftwastakenimmediatelyafterthedefectcreation.SpriralCTexaminationwasconductedat4，8，16weeksafterautografttoobservetheprogressoftheboneremodelingandevaluatethepositionofthebonybridgeandthevolumechangesofthebone.Results：Bonybridgewasmainly
6、locatedinthemiddlepartialtotheposteriorandsuperioroftheautograftarea，nearthebaseofnasalcavity.Conclutions：Theautograftedalveolusresorptedobviouslyintheearlytime,withtimegoingtheresorptionofbonetendedstable.III上海交通大學(xué)碩士學(xué)位論文ABSTRACTPARTTWOACOMPUTEDTOMOGRAPHI
7、CEVALUATIONONTHEAUTOGRAFTEDALVEOLUSINDOGSAFTERMAXILLARYEXPANSIONObjectives:Toinvestigateboneremodelingoftheautograftedalveolusaftermaxillaryexpansion.Methods:4Beagledogs(24weeksold)weresurgicallycreatedanunilateralalveolardefectwithautografttakenimmediate
8、lyandthenwererandomlydividedintotwogroups.Theexpansiongroupconsistofactive(4weeks)，retention(4weeks)phases.Thecontrolgroupreceivednoexpansion.SpriralCTexaminationwasconductedat8，16weeksafterautografttoevaluatethevol
