Conscious SedationAnesthesia, DentalHypnotics and SedativesDeep SedationMidazolamHydroxyzinePropofolAnesthesia, LocalPreanesthetic MedicationAnesthetics, IntravenousDental AnxietyAnesthesia, RectalAnesthesia, GeneralAlphaprodineAnesthesia Recovery PeriodConsciousnessMeperidineChloral HydrateEndoscopy, Digestive SystemDentistry, OperativeBurns, ElectricAnesthesia, IntravenousDiazepamDental ImplantationManifest Anxiety ScaleGastric BalloonDexmedetomidineNitrous OxideEndoscopy, GastrointestinalFentanylTooth ExtractionColonoscopyIntubation, IntratrachealProspective StudiesPatient SatisfactionCholangiopancreatography, Endoscopic RetrogradeBronchoscopyInjections, IntravenousDouble-Blind MethodPainNeurosurgical ProceduresPilot ProjectsTreatment OutcomeOxygenEquipment DesignAnxietyTime FactorsAnalgesiaAnesthetics, LocalRetrospective StudiesHeart RateBlood Pressure