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成人骨性Ⅱ类高角患者上气道形态及舌骨位置的CBCT研究.docx

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成人骨性Ⅱ类高角患者上气道形态及舌骨位置的CBCT研究 【Introduction】 AdultskeletalClassIImalocclusionisacommonorthodonticconditioncharacterizedbyaretrudedmandiblerelativetothemaxilla.Itcanleadtovariousissues,includingacompromisedupperairwayandabnormalpositionofthehyoidbone.Cone-beamcomputedtomography(CBCT)hasbecomeavaluabletoolforassessingcraniofacialstructuresandevaluatingtheeffectsofskeletalmalocclusionontheupperairwayandhyoidboneposition.Inthisstudy,weaimtoinvestigatetheupperairwaymorphologyandthepositionofthehyoidboneinadultskeletalClassIImalocclusionpatientsusingCBCT. 【Methods】 Atotalof50adultpatientsdiagnosedwithskeletalClassIImalocclusionwereincludedinthisstudy.CBCTscanswereobtainedtoassesstheupperairwaymorphologyandpositionofthehyoidbone.MeasurementsweretakenusingCBCTsoftware,includingtheretropalatalairwayspace(RPAS),retroglossalairwayspace(RGAS),andhyoidbonepositionrelativetothemandibularplane. 【Results】 TheresultsofthisstudyrevealedsignificantdifferencesintheupperairwaymorphologyandhyoidbonepositionbetweentheClassIImalocclusionpatientsandacontrolgroupofnormalocclusionsubjects.TheskeletalClassIIgroupshowedareducedRPASandRGAScomparedtothecontrolgroup,indicatingacompromisedupperairway.Additionally,thehyoidboneintheClassIImalocclusiongroupwasfoundtobepositionedmoreinferiorlyandposteriorlyrelativetothemandibularplanecomparedtothecontrolgroup. 【Discussion】 ThefindingsofthisstudysuggestthatadultskeletalClassIImalocclusionpatientshaveamoreconstrictedupperairwayandanabnormalhyoidboneposition.ThereducedRPASandRGASobservedinthesepatientsmaycontributetoahigherriskofsleep-disorderedbreathingandobstructivesleepapnea.TheinferiorandposteriorpositionofthehyoidbonesuggestsapotentialrelationshipbetweenthemandibularretrognathismcommonlyseeninClassIImalocclusionandthealteredpositionofthehyoidbone.Furtherinvestigationisneededtodeterminetheexactmechanismsunderlyingtheseobservations. 【ClinicalImplications】 TheassessmentofupperairwaymorphologyandhyoidbonepositionusingCBCTcanprovidevaluableinformationforort