Effect of Laser and Light Activation On Mineral Loss From Enamel Using 35% Carbamide Peroxide Bleaching Agent – An Atomic Absorption Spectrophotometric Study

Dr. Shabir Ahmad Bhat; Dr. Omer Hussain Misgar

Volume : IX, Issue : V, May - 2019

Effect of Laser and Light Activation On Mineral Loss From Enamel Using 35% Carbamide Peroxide Bleaching Agent – An Atomic Absorption Spectrophotometric Study

Dr. Shabir Ahmad Bhat, Dr. Omer Hussain Misgar

Abstract :

Aim: To evaluate mineral loss from enamel using carbamide peroxide bleaching agent and the effect of LED and Laser activation on mineral loss from enamel. Methodology: Twenty human premolar crowns were divided into 80 blocks of 4x4x3mm were obtained. Samples were divided into four groups of twenty each depending upon the beaching treatment and activation method. Group I – Carbamide Peroxide without additional activation, Group II – Carbamide Peroxide with additional activation by Diode Laser, Group III – Carbamide Peroxide with additional activation by LED Light and Group IV – Control group. Amount of calcium and Phosphate loss was calculated using atomic absorption spectrophotometry. Results: Results showed that bleaching leads to calcium and phosphate loss from enamel with additional activation resulting in higher amounts of mineral loss. Conclusion: Activation of bleaching agents leads to increased mineral loss from enamel and must be followed by remineralisaton