Effect of low-concentration bleaching products on enamel bond strength at different elapsed times after bleaching treatment.
This study evaluated the effects of several low-concentration bleaching products on microtensile bond strength (µTBS) to enamel at different elapsed times after the bleaching treatment. One hundred and fifty bovine incisors were divided into five groups: No treatment, 10% carbamide peroxide (Opalescence), 10% hydrogen peroxide (Opalescence Treswhite Supreme), 3% carbamide peroxide plus lactoperoxidase (WhiteKin), or 3% carbamide peroxide plus 2.7% carbamide peroxide (Clysiden Kit Express). All treatments lasted 4 weeks. After bleaching treatment or non-treatment, teeth were restored immediately, at 1, 3, 7, or 14 days after bleaching and submitted to µTBS test. Data were analyzed by ANOVA and Tukey's test (p<0.05). For WhiteKin and Clysiden, µTBS to enamel was significantly reduced immediately, at 1, 3 and 7 days after bleaching. At 14 days after bleaching, similar µTBS values were obtained regardless of bleaching product. Therefore, while over-the-counter (OTC) products might affect bond strength to enamel, this effect was no longer observed after 14 days.
Department of Stomatology and Nursing, Faculty of Health Sciences, Rey Juan Carlos University.
María
M
Cura
M Victoria
MV
Fuentes
Laura
L
Ceballos
D000818:Animals; D000077463:Carbamide Peroxide; D002417:Cattle; D001840:Dental Bonding; D003743:Dental Enamel / Q000187:drug effects*; D003799:Dental Stress Analysis; D010545:Peroxides / Q000494:pharmacology*; D013499:Surface Properties; D013718:Tensile Strength / Q000187:drug effects; D014073:Tooth Bleaching / Q000379:methods*; D058205:Tooth Bleaching Agents / Q000494:pharmacology*; D014508:Urea / Q000031:analogs & derivatives* / Q000494:pharmacology
D010545:Peroxides; D058205:Tooth Bleaching Agents; D000077463:Carbamide Peroxide; D014508:Urea