Mandibular AdvancementOcclusal SplintsOrthodontic Appliances, RemovableChinHyoid BoneMandibleOrthodontic Appliance DesignSnoringRetrognathiaMalocclusion, Angle Class IIOrthodontic Appliances, FunctionalCephalometryMandibular CondyleSkull BaseSleep Apnea, ObstructiveJaw Fixation TechniquesPharynxCraniomandibular DisordersSplintsVertical DimensionTongueUvulaOrthodontic AppliancesPalate, SoftOropharynxDental Occlusion, TraumaticPolysomnographyMaxillaSleep Apnea SyndromesSleep StagesAirway ObstructionOsteotomyPostureFaceTreatment OutcomeStatistics, NonparametricCross-Over Studies