Efficacy comparison of different methods of Bleaching: home bleaching, laser bleachnig, in-office bleaching and combination technique (In-Vitro study)

Zakavi, Faramarz

doi:10.22118/jsmj.2017.85921.1020

Efficacy comparison of different methods of Bleaching: home bleaching, laser bleachnig, in-office bleaching and combination technique (In-Vitro study)

Document Type : Original Article

Author

Faramarz Zakavi

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10.22118/jsmj.2017.85921.1020

Abstract

Introduction: Tooth whitening has become a popular treatment in esthtic dentistry. So, the aim of this in vitro study was to comparison of different methods of bleaching: home bleaching, laser bleachnig, in- office bleaching and combination technique.
Subjects and Methods: A total of 50 intact human premolers teeth of matched size were prepared and then 5 groups of 10 teeth in each group were randomly selected. Group 1: home bleaching using 15% carbamide peroxide (CP) treatment; Group 2: In-office bleaching using 40% hydrogen peroxide; Group 3: combination of 1 and 2 methods; Group4: 40% HP treatment activated by diode laser; Group 5: control (without treatment).
Tooth Color measurements were performed according to the CIELab system using spectrophotometer before treatment procedure and 20 day after that.
Results: Comparing the different treatments showed that home bleaching and combination methods were significantly more effective (P<0.05), and the mean total ΔE was 9.80±2.02 and 9.94±1.96 respectively. This value for in-office bleaching treatment was 5.35±0.72. Also There was no significant difference in ΔE value between laser (4.14±1.82) and control (3.03±1.41) groups by the end of treatment (p>0.05).

Keywords

Color difference

Tooth bleaching

Peroxides. In vitro