Sleep Apnea, ObstructiveSleep Apnea SyndromesPolysomnographySleepContinuous Positive Airway PressureSnoringSleep Apnea, CentralPalate, SoftUvulaMandibular AdvancementSleep, REMPharynxAdenoidectomyTonsillectomySleep DisordersSleep StagesDisorders of Excessive SomnolencePositive-Pressure RespirationWakefulnessSeverity of Illness IndexTonguePharyngeal MusclesAdenoidsOcclusal SplintsPulmonary Disease, Chronic ObstructiveOximetryAnoxiaArousalOrthodontic Appliances, RemovableAirway ObstructionOropharynxNasal ObstructionRespirationBody Mass IndexLung Diseases, ObstructiveHyoid BoneAirway ResistancePulmonary VentilationSleep Initiation and Maintenance DisordersCephalometryRespiratory MechanicsOxygenObesityOtorhinolaryngologic Surgical ProceduresFluid ShiftsProspective StudiesRisk FactorsMouth BreathingPatient ComplianceCircadian RhythmTreatment OutcomeCase-Control StudiesHypercapniaHypopharynxCheyne-Stokes RespirationSupine PositionComorbidityNeckNoseMonitoring, AmbulatoryQuestionnairesPalatine TonsilPrevalenceOrthodontic AppliancesRespiratory Function TestsSleep Arousal DisordersObesity Hypoventilation SyndromeNocturnal Myoclonus SyndromeVelopharyngeal InsufficiencyElectroencephalographyRhinomanometryFollow-Up StudiesPostureHypoglossal NerveRespiratory SystemLaryngopharyngeal RefluxJaundice, ObstructiveObesity, MorbidPalateBlood PressureNarcolepsyInhalationHypertensionSleep DeprivationTime FactorsRespiratory MusclesStatistics, NonparametricHeart RateSleep Disorders, IntrinsicMandibleCross-Over StudiesMonitoring, PhysiologicApneaOrthodontic Appliance DesignMasksAutomobile DrivingPressureRespiratory Physiological PhenomenaElectrooculographyFacial Bones