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《自鎖托槽與傳統(tǒng)托槽非減數(shù)矯治安氏Ⅱ類2分類錯(cuò)[牙合]機(jī)制初探》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、蟲堡旦膣醫(yī)堂志0l2年3月第47卷第3期ChinJStomatol,March2012,V01.47.Nn3.正畸學(xué)研究.自鎖托槽與傳統(tǒng)托槽非減數(shù)矯治安氏Ⅱ類2分類錯(cuò)拾機(jī)制初探陳玉萍厲松【摘要】目的比較自鎖和傳統(tǒng)托槽非減數(shù)矯治安氏Ⅱ類2分類錯(cuò)猞畸形后牙弓及頭影測(cè)量項(xiàng)目的變化,探討各自解除擁擠的機(jī)制。方法選取4O例非減數(shù)矯治的安氏Ⅱ類2分類錯(cuò)猞畸形患者,分別使用自鎖托槽(自鎖組,20例)和傳統(tǒng)托槽(傳統(tǒng)組,20例)解除牙列擁擠。測(cè)量?jī)山M患者治療前后模型和頭影測(cè)量項(xiàng)目,比較每組治療前后差異及治療差值的組間差異,并分析兩組牙列擁擠解除的相關(guān)因素。結(jié)果自鎖組上頜第一前磨牙區(qū)牙弓寬度增
2、加量[(4.454-2.60)mm]和上頜牙弓周長(zhǎng)增加量[(6.694-3.65)mm]顯著大于傳統(tǒng)組[分別為(2.414-2.74)和(3.60±2.82)mm](P<0.05)?;貧w分析顯示兩組擁擠解除的相關(guān)因素均是牙弓寬度及牙弓長(zhǎng)度的增加,但自鎖組牙弓寬度對(duì)擁擠解除的貢獻(xiàn)大于牙弓長(zhǎng)度。結(jié)論非減數(shù)矯治安氏Ⅱ類2分類牙列擁擠時(shí),自鎖組和傳統(tǒng)組均通過牙弓寬度及牙弓長(zhǎng)度的增加來解除擁擠,但自鎖組更傾向于通過牙弓寬度增加解除擁擠,表現(xiàn)出更強(qiáng)的擴(kuò)弓效果。、、【關(guān)鍵詞】錯(cuò)拾,安氏Ⅱ類;正畸學(xué),矯正;正畸托架;非減數(shù)矯治Seif-li~:atingVS.conventionalbrac
3、ketsinthetreatmentofpatientswithClassIIdivision2malocclusion:aclinicaltrialofdentalandcephalometricanalysisCHENYu-ping。LISong.DepartmentofOrthodontics,CapitalMedicalUniversityShoolofStomatology,Beijing100050,ChinaCorrespondingauthor:LISong,Emaif:dentistli@263.net,TeZ:0086—10—6709922D【Abstra
4、ct】0bjectiveTocomparethedentalandskeletalchangesinpatientswithClassⅡdivision2malocclusiontreatedwithself-ligatingandconventionalbracketsystems.MethodsFortypatientswithClassIIdivision2malocclusionweretreatednon.extraction.Halfofthemweretreatedwithself-ligatingbracketsandtheothersweretreatedw
5、ithconventionalbrackets.Thedentalcastsandlateralcephalometricradiophotographswereanalyzedbeforeandaftertreatment.ResultsSignificantincreaseininterpremolarwidths.a(chǎn)rchlengths,U1.NA.L1.MPandarchperimeterswerenotedafterorthodontictreatmentinbothgroups.Statisticallygreaterincreaseinupperinter-fi
6、rstpremolar[(4.454-2。60)mm]wasfoundinself-ligatinggroupthaninconventionalgroup[(2.414-2.74)mm,P<0.05].Stepwiseregressionanalysisindicatedthattheincreaseinarch1engthandarchwidthcontributedtotheincreaseinarchperimeter.ConclusionsTherewereanoverallincreaseinarchwidthsandlengthsinpatientstreate
7、dwithself-ligatingandconventionalbracktets.However,morearchwidthincreasewasfoundinself-ligatinggroupthaninconventionalgroup.【Keywords】Malocclusion,AngleClass1I;Orthodontics,corrective;Orthodonticbrackets;non—extractiontreatment安氏Ⅱ類2分類錯(cuò)拾是一種相對(duì)少見的錯(cuò)猞畸良。Damon