正畸B组第1小组SummaryKeyinformationlongface16-year-oldgirlfromnortheastfamilyhistorytaciturnityComewithhermomWeekend-opendmaintroubleHyperosteogeniedMandibularmandibularprotrusionAllabove?HighAngleunderbiteHereditycircumstance:Congenital(Macroglossiadisease)Acquired(1)hyperpituitarism(2)maxillarydeciduousteethearly-missed、retention、Inadequatecanineabrasion(3)earlymaxillarypermanentteetheruption(4)functionalfactor:suckle、hypertrophyoftonsil、muscledysfunction(5)badhaditOtherinformationneeded(1)Inquiry:systemicdisease、badhadit、alreadytreatment、Duration、familyhistory、psychologicalguidance(2)inspection:①insidecheck:toothcount、toothshape、Oralhygiene、dentalarchshape、occlusalstatus、Softtissuelesions②outsidecheck:photograph、Symmetricface?proportion?overlengthlowed1/3?auxiliaryexamination:X-ray:PanoramicradiographexaminationlateralcephlometricsCTOthercheck:modelanalysisTMJcheckmusculartensioncheck①Extraoralphotographs:Frontalview:horizontal:Facialisasymmetry,anditmovestorightsidevertical:partiallengthisinthe1/3lowerfaceslip:thedegreeofclosure、underlipisthickerthanupperLateralview:facialmorphology:concavetypelip:thedegreeofclosure、Hline,Elinementolabialsulcus:shallow、Mandibularadvancement②Intraoralphotographs:Frontalview:overbiteinanterior22、23、32、33openbitedistemain11and21crowdedinmaxillaryLateralview:angleⅢ,anteriorteethisreverseoverjetandreverseoverbitemaxillaryanteriorteeth:labialinclinationmandibularanteriorteeth:lingualinclinationOcclusalview:dentalarchsareoval,crowdinginthemaxillary.maxillarycentralincisor:torsionoralhygiene:poorPeriodontium:healthygingivaAlveolarbone:thelabialboneofmandibleisthinLabialfrenum、linguaefrenum:normalsoftandhardtissuesPantomography:impactedteeth:18、28、38、48normalThemeasurementitemsPermanentteethperiodsignificancemeasuredvaluenormalvalueSNA88º>82.8ºmaxillaryprotrusionSNB94º>80.1ºMandibularprotrusionANB-6º<2.7ºNegative,mandibularprotrusionWits-17mm<-1.5mmmandibularprotrusion,class,mesiocluⅢsionNP-FH88º>85.4ºmandibularprotrusionYaxis67º>66.3ºmandibularprotrusion;GrowthbeforethebottomNA-PA-7º<6.0ºmaxillaryretrusionMP-FH40º>31.1ºSteepnessofmandibularbody,largemandibularAngle,highfacialheightThemeasurementitemsPermanentteethperiodsignificancemeasuredvaluenormalvalueMax1-SN128º>105.7ºmaxillarycentralincisorislabialinclinationMand1-MP66º<92.6ºmandibularcentralincisorislingualinclinationMax1-NA40.1º>22.8ºmaxillarycentralincisorislabialinclinationandbulgingMax1-NA9mm>5.1mmmaxillarycentralincisorislabialinclinationandbulgingislargeMand1-NB16.7º<30.3ºMandibularcentralincisorislingualinclinationandbulgingislargeMax-Mand1129.3º>125.4ºUpanddownthefrontofthedentalarchdegreeisrelativelysmallThemeasurementitemsPermanentteethperiodsignificancemeasuredvaluemeasuredvaluenormalvaluenormalvalueN-Me122mm>119.7mmTheheightofthefaceismorethannormalN-ANS52mm<53.8mmmaxillarygrowthisInadequateANS-Me70mm>65.8mmpartiallengthisinthe1/3lowerfacesN-ANS/N-Me43%<45%maxillarygrowthisInadequateANS-Me/N-Me57%>55%partiallengthisinthe1/3lowerfaces1、maxillaryretrusion,mandibularprotrusion2、maxillarycentralincisorislabialinclinationmandibularcentralincisorislingualinclination3、Theheightofthefaceismorethannormal,maxillarygrowthisInadequate,partiallengthisinthe1/3lowerfacesConclusiontherapeuticregimenORTHODONTIC-ORTHOGNATHICSURGERYoption1IndicationClassIII,mesioclusion(ANB<-4˚,upperincisorisobviouslylabialtilted,lowerincisorlingualtilted,anteriorofdeepreverseoverjet)Pre-surgicalorthodontictreatmentAlignmentLevelingIncisalpositionandspaceclosureCoordinationofdentalarchesandcoorrectionofposteriorcrossbiteAccordingtomovementsanddecompensationofteeth,it’sbenificialtomovebones.orthognathicsurgerySagittalsplintramusosteotomyPost-surgicalorthodontictreatmentAlignmentSpaceclosingLevelingAdjustmentofanteropoetreiorpositionincisorsCoordinationofdentalarchesRetentionMaintainerChincapCAMOUFLAGEoption2Toothextractionincluding2maxillarysecondpremolarandthirdmolar2mandibularfirstpremolarsextractionandthirdmolarcouldpreventupperincisorsfromuprightingandchangetheincisorpositionmaxillarprotractionImplantasskeletalanchorageformaxillaprotractionisaneffectiveandstableclinicaltreatmentforClassIIImalocclusion,whichavoidsthedentalcompensation.StraightwireappliancerelievingdentalcrowdingCompensatorymovetheupperandlowerfrontteeth,toconcealthejawdeformity.Thankyou.