Phosphoric AcidsAcid Etching, DentalDental BondingStereoisomerismDentinDentin-Bonding AgentsDental EnamelResin CementsMethylmethacrylatesMaterials TestingSmear LayerDental EtchingShear StrengthDental CementsMethacrylatesDental Stress AnalysisComposite ResinsTensile StrengthAcrylic ResinsSurface PropertiesBoron CompoundsMicroscopy, Electron, ScanningBisphenol A-Glycidyl MethacrylateDental Enamel SolubilityOrthodontic Brackets