Shear bond strength to enamel after power bleaching activated by different sources.
The purpose of the present study was to evaluate enamel bond strength of a composite resin material after hydrogen peroxide bleaching, activated by a diode laser (LaserSmile), an ozone device (HealOzone), a light-emitting diode (BT Cool whitening system), and a quartz-Plus. Fifty extracted caries-free permanent incisors were used in this study. Thirty-eight percent hydrogen peroxidegel was applied to sound, flattened labial enamel surfaces and activated by different sources. Enamel surfaces that had received no treatment were used as control samples. Bonding agent was applied according to the manufacturer's instructions and the adhesion test was performed according to ISO/TS 11405. Statistical analysis showed significant influence of the different activation technique of hydrogen peroxide on shear bond strength to enamel (ANOVA, LSD, P < 0.05). The data in this vitro explorative study suggest the activation of hydrogen peroxide by different sources may further affect the shear bond strength of subsequent composite resin restoration to enamel. Within the limitations of this in vitro study, further studies examining the structural changes of activated hydrogen peroxide-treated enamel are needed. Due to the different activation methods; duration of light irradiation effects, longer time periods may be needed before application of adhesive restorations to enamel, compared with non-activated bleaching.
Department of Operative Dentistry, Faculty of Dentistry, Near East University, Mersin, Turkey. cdenizcank@yahoo.com
Deniz C
DC
Can-Karabulut
Baris
B
Karabulut
D000268:Adhesiveness; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure*; D003764:Dental Materials / Q000737:chemistry; D003799:Dental Stress Analysis / Q000295:instrumentation; D004867:Equipment Design; D006801:Humans; D006861:Hydrogen Peroxide / Q000528:radiation effects / Q000627:therapeutic use; D054023:Lasers, Semiconductor / Q000627:therapeutic use; D028022:Low-Level Light Therapy / Q000379:methods; D008422:Materials Testing; D010083:Oxidants, Photochemical / Q000627:therapeutic use; D010126:Ozone / Q000627:therapeutic use; D010789:Phototherapy / Q000295:instrumentation / Q000379:methods*; D019279:Resin Cements / Q000737:chemistry; D012464:Saliva, Artificial / Q000737:chemistry; D033081:Shear Strength; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D014073:Tooth Bleaching / Q000379:methods*; D058205:Tooth Bleaching Agents / Q000528:radiation effects / Q000627:therapeutic use*
C438313:Clearfil SE Bond; D003188:Composite Resins; D003764:Dental Materials; D010083:Oxidants, Photochemical; D019279:Resin Cements; D012464:Saliva, Artificial; D058205:Tooth Bleaching Agents; C541508:clearfil majesty; D010126:Ozone; D006861:Hydrogen Peroxide