Effects of 10% carbamide peroxide treatment and sodium fluoride therapies on human enamel surface microhardness.
This study sought to evaluate the microhardness of enamel submitted to 10% carbamide peroxide treatment and different methods of remineralization involving sodium fluoride (NaF). Non-erupted third molars were used and 75 enamel blocks with standardized dimensions (4.0 x 4.0 x 2.0 mm) were obtained. Enamel blocks were randomly divided into five groups (n = 15): one control (no bleaching and no fluoride treatment), one receiving a 10% carbamide peroxide treatment, one receiving 10% carbamide peroxide plus acidulated phosphate fluoride, one receiving 10% carbamide peroxide with 0.2% NaF, and one receiving 10% carbamide peroxide and 0.05% NaF. There were no differences among four of the groups (p > 0.05); the group receiving 10% carbamide peroxide only was different from all other groups (p < 0.05). Based on these results, NaF therapies are recommended during carbamide peroxide bleaching treatments.
Leandro
Guilherme Alberto Loureiro
GA
Department of Dentistry, University of Taubate, Brazil.
Attia
Mariana Lerner
ML
Cavalli
Vanessa
V
do Rego
Marcos Augusto
MA
Liporoni
Priscila Christian Suzy
PC
D000077463:Carbamide Peroxide; D002327:Cariostatic Agents / Q000627:therapeutic use; D003743:Dental Enamel / Q000000981:diagnostic imaging / Q000187:drug effects; D004338:Drug Combinations; D005460:Fluorides, Topical / Q000627:therapeutic use; D006244:Hardness / Q000187:drug effects*; D006801:Humans; D010545:Peroxides / Q000009:adverse effects*; D012969:Sodium Fluoride / Q000627:therapeutic use*; D014073:Tooth Bleaching / Q000009:adverse effects*; D017001:Tooth Demineralization / Q000139:chemically induced*; D014089:Tooth Remineralization / Q000379:methods; D014463:Ultrasonography; D014508:Urea / Q000009:adverse effects / Q000031:analogs & derivatives*
D002327:Cariostatic Agents; D004338:Drug Combinations; D005460:Fluorides, Topical; D010545:Peroxides; D000077463:Carbamide Peroxide; D014508:Urea; D012969:Sodium Fluoride