lf托槽和mbt直丝托槽矫治牙列拥挤排齐阶段的对比分析-(5324)

《lf托槽和mbt直丝托槽矫治牙列拥挤排齐阶段的对比分析-(5324)》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、遵义医学院硕士学位论文英文摘要AComparativeStudyofLFBracketsandMBTStraightWireBracketstoTreattheDentalCrowdingatAlignmentStageAbstractObjective：Toexploretheeffectoftheteethposition，dentalarchandjawhardtissueatthealignmentstagebythecomparisonofLFbracketsandMBTbrackets，andprovideclinicalreference．Methods：Thir

2、tycasesofmediumorseveredentalcrowdingwereselectedfromDepartmentofStomatology,theFifthAffiliatedHospitalofZunyiMedicalCollegefromJanuary,201toDecember，2012，anddividedintotwogroupsrandomly．FifteencasesinexperimentalgroupweretreatedwithLFbrackets，andfifteencasesincontrolgroupweretreatedwithMBTb

3、rackets．Thedentalcastsandcephalometricx-rayweretakenbeforeandafterteethaligning，tracingandanalysing16measurements．Ttestwasperformedforthemeasurementresultsandthetimeofteethalignmentofthetwogroups．Results：1．Cephalometrics：beforeandafterteethaligning，theindexofSNA(dg)、SNB(dg)、ANB(dg)、MP—FH(dg)

4、didnotchangesignificantly@>0．05)betweengroupsandwithingroup；U1-NA(mm)、U1-SN(dg)intwogroupsreducedandLFbracketsgroupreducedmorethanMBTbracketsgroup，thedifferencesbetweengroupsandwithingroupwerestatisticallysignificantp

5、ndlowerinter-canineofthetwogroupsincreased，thereweresignificantchangesbetweengroupsandwithingroupp0．05)；Butthewidthoftheupperandlowerinter-second—premolar,

6、inter—first-molarinMBTgroupdecreasedsignificantlyp

7、xtractiontreatmentatalignmentstagewithLF’二遵义医学院硕士学位论文英文摘要bracketsandMBTstraightwirebrackets，thelabialinclinationofmaxillaryincisorsreduced，thewidthoftheupperandlowerinter-canineincreasedwhiletheskeletalhadlittlechanges；2．Thelabialinclinationofmaxil