SulfonesPurinesPiperazinesPhosphodiesterase InhibitorsPhosphodiesterase 5 Inhibitors3',5'-Cyclic-GMP PhosphodiesterasesErectile DysfunctionCyclic Nucleotide Phosphodiesterases, Type 5Muscle StrengthTensile StrengthPenile ErectionHomosexuality, MaleMethamphetamineVasodilator AgentsCyclic GMPShear StrengthGeorgiaHand StrengthCompressive StrengthUnsafe SexMuscle Strength DynamometerMaterials TestingRisk-TakingDental BondingSexual BehaviorDental Stress AnalysisResin CementsOsmolar ConcentrationComposite ResinsDentin-Bonding AgentsPliabilityAcid Etching, DentalResistance TrainingMethacrylatesSurface PropertiesStress, MechanicalDental MaterialsMuscle WeaknessAdhesivenessDentinSilanesAcrylic ResinsMuscle, SkeletalDental CementsDental EtchingBiomechanical PhenomenaWeight LiftingIsometric ContractionDental PorcelainAdhesivesBisphenol A-Glycidyl MethacrylatePhosphoric AcidsOrthodontic BracketsDental AlloysAluminum OxideZirconiumTorqueDental EnamelTime FactorsQuadriceps MuscleAluminum SilicatesMicroscopy, Electron, ScanningMethylmethacrylatesLight-Curing of Dental AdhesivesAnalysis of VarianceCeramicsPinch StrengthRespiratory MusclesGlass Ionomer CementsPolymethacrylic AcidsRange of Motion, ArticularHydrofluoric AcidHardnessBone DensityPhysical FitnessMuscle ContractionGlassMechanical Phenomena