传动与mbt直丝弓矫治技术治疗angleⅱ1类排齐整平前后软硬组织比较

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1、Abs仃actComparisononpre—postlevelingandaligningtreatmentinAngleII1softandhardtissuebyusingTransmissionandMBTstraightwiretechnologyAbstractBackgroundTheclassicalAngleclassificationofmalocclusioninitiatedbydentistE．HAnglein1899isthemostwidelyusedoneinthecurrentw

2、ord．ClassIImalocclusioniscommonintheclinicwhichusuallyshowdeepoverbite，deepoverjet，classIImolarrelationship，discrepancyinupperandlowerdentalarch．Basedonprevioustreatmentexperience，thedentistsfounddeepoverbitewasahighincidencemalocclusiontypeinAnglelI“andalsot

3、heimportantquestioninprocessoftreatment．Bite-opening，thatisadjustingverticalrelationshiphasgreatimportanceofsagittaldirection．Somanyclinicaldentistsholdthatbite—openingisnotaffiliatedcriticalstepsbutwasthekeyone．Comparedwithedgewisetechnology,MBTstraightwiret

4、echnologywasusedwidelyintheclinic，whichhadgreatlysimplifiedtheprocedureoftreatmentanddecreasedthechair-sideoperatingtime．MBTstraightwireappliancehasthetendencyofaggravatingdeepoverbiteinalieningandlevelingprocessbecauseoflargeinclinationofcaninebracket．Transm

5、issionstraightwireappliancetechniquewasinvitedbyprofessorLinjiuxiangofPekinguniversityin2006．ItwasanefficientapplianceandhadtheadvantageofBeggtechniqueandTip-Edgetechnique．ThedeepoverbitewasopenedbythetipbackbendonarchwireandlittleforceclassIIelasticinalienin

6、gandlevelingprocess．ThisthesisistocomparethedifferencesofhardandsofttissuebetweentransmissionstraightwiretechnologyandMBTstraightwiretechnologyinopeningAnglelllde印overbiteprocess．1VAbstractobjectiveThepatientofAngle111malocclusionwithdeepoverbitewastreatedbyt

7、ransmissionstraightwiretechandMBTstraightwireappliance．Thechangeofhardandsofttissueandtransformofteethwerecontractedbeforetreatandafteralieningandleveling．MethodsSixteenpatientshasdiagnosedfortheAngleII‘malocclusion，Themaxillaryandmandibularanteriorteethwithd

8、eepoverbiteIIoorabove，TherelationshipofmolarisclassII．Inthetreatmentofextractiontoothdesignformaxillaryfirstpremolar,themandibularsecondpremolars．Theexperimentalgroup(8cases)usedTransmiss