Clinical Comparative Evaluation of Led and Diode Laser on Efficacy of 40% Hydrogen Peroxide on Tooth Whitening

Abstract

Introduction: Tooth discoloration creates wide range of cosmetic problems. Various methods are available to remove stains. One of those methods is tooth bleaching which can be done by vital or non vital methods. Bleaching process involves use of hydrogen peroxide and carbamide peroxide. These bleaching agents can be activated by chemical, heat or light.

Aim: To evaluate and compare the clinical chromatic scale and efficiency of teeth

Whitening procedures performed with 40%hydrogen peroxide, LED activated and LASER activated, for the treatment of discolored teeth.

Materials and method: Total 60 patients with the chief complaint of discoloration of teeth were included for the study. Each patient was divided randomly into following three groups. Group 1: 40% hydrogen peroxide (n-20 patients), Group 2: LED (n-20 patients), Group 3: Diode LASER (810nm) (n-20 patients). After explaining the treatment for discoloration consent was obtained. In all patients, before the bleaching treatment, full mouth oral prophylaxis was done. Isolation was done with rubber dam. Gingival barrier was applied. Patient’s chromatic scale score was noted with shade guide (vita classic) before the treatment. 40%Hydrogen peroxide gel (opalescence Boost) was applied on the discolored teeth according to manufacturer’s instruction in all 3 groups and the shade was evaluated with the shade guide (vita classic).

Result:  There is high significant difference present in colour change in various groups. The order of mean colour change is

Group 3 > Group 2 > Group 1

Group 1 has the least difference where as Group 3 has the highest difference.

Conclusion: Both diode laser-assisted and LED bleaching techni­ques are capable of altering tooth colour change, but diode laser bleaching is significantly a more efficient technique