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ID:33397213
大小:1.14 MB
页数:31页
时间:2019-02-25
《tweed-merrifield定向力矫治技术用于成人安氏ⅲs类错(牙合)畸开的拔牙矫治》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、大连医科大学硕士学位论文关键词:Tweed技术安氏IIl8类错骀唇部美观.2.大连医科大学硕士学位论文ApplyingTweed-MerrifieldDirectionalForceTechniqueinadultwithAngleClassHIsmalocclusionbyextractingfourpremolarsNameofPostGraduateStudent:dangYanjunNameofSupervisor:ProfessorSunYanMajor:OrthodonticsandDentofacialOrthopaedicsAbs
2、tractObjectives:AssesstheeffectonadultpatientwithAngleclassIIIsmalocclusionbyextractingfourpremolarsandapplyingTweed-MerrifieldDirectionalForceTechniquetorefractanteriorteeth.Toevaluatethechangesbetweenthelipsandteeth,aswellastheeffectonthelipaesthetic.MaterialsandMethods:AnA
3、noeclassIIIsfemalecasewasselectedfromDalianOrthoClincinMarch2012,whoWas22yearsold,convexprofile,upperandlowermoderatecrowdingandanteriorteethonedge,maxillarymidlineshifttotheleft.Throughthepatient’Soralexamination,modelanalysisandcephalometricanalysis,thepatientwastreatedbyex
4、tracting15、24、4、44、t8、28、38、48andapplyingTweedTechnique.X·raywastakenpre-treatmentandaweekbeforecompletionoftreatment,measurementsfromTweedanalysis,measurementsofsofttissueassociated、杭tllthelipsandsuperimpositionofpre—andpost-treatmentwereusedtoobservethechanges.Results:After
5、21months,thetreatmentwasfinished.Preandpost-treatmentchangesshowed:crowdingwasrelieved,classIIIsmolarrelationshipWaschangedtoclassI,normaloverbiteandoverjetwereachieved,profilewasimproved,upperandlowerdentitionmidlinewascenteredandsymmetric.Aftertreatment,panoramicradiographs
6、howthatrootsaresubstantiallyparallelandshownosignificantabsorption,alveolarboneandperiodontaltissueareingoodhealth,condylesaresymmetric.Mandiblewasrotatedcounterclockwise,mandibularplaneanglewasdecreased(FMAdecreasedfrom300to280).Loweranteriorteethwasretractedanduprighted(IMP
7、A95odecreased82。).Obviousimprovementoftheprofile(ZANGLE-3一大连医科大学硕士学位论文66。increased75。;Li-Hlinechangesfrom3mmto0mm).Lipmorphologyofpatientisinharmony,patientandparentsaresatisfiedwiththeresults.Conclusion:ForthetreatmentofadultpatientwithAngleclassHIsbyextractingfourpremolars,
8、applyingTweed-MerrifieldDirectionalForceTechniquetoretractanteriorte
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