International Journal of Laser Dentistry

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VOLUME 4 , ISSUE 3 ( 2014 ) > List of Articles

ORIGINAL ARTICLE

Enamel Solubility and Depth of Demineralization with Laser Bleaching and the Impact of CPP-ACP: An Optico-chemical Analysis

Sonali Agarwal, N Basappa

Citation Information : Agarwal S, Basappa N. Enamel Solubility and Depth of Demineralization with Laser Bleaching and the Impact of CPP-ACP: An Optico-chemical Analysis. Int J Laser Dent 2014; 4 (3):67-73.

DOI: 10.5005/jp-journals-10022-1059

License: CC BY-NC 4.0

Published Online: 01-12-2017

Copyright Statement:  Copyright © 2014; The Author(s).


Abstract

Aim: To determine the enamel solubility and depth of demineralization with laser bleaching and impact of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) when applied prior to and after laser bleaching. Materials and methods: The 40 specimens obtained from 10 human premolars were treated in accordance with manufacturer protocols; laser bleaching was performed using Opalescence Boost Gel (40% hydrogen peroxide) followed by laser activation using 36 mW/660 nm diode laser applied for 4 minutes at an energy fluence of 8.6 J/cm2. The study consisted of four experimental groups are as follows: • Group 1: Control (laser bleaching only) • Group 2: Pretreatment with CPP-ACP and laser bleaching • Group 3: Laser bleaching and post-treatment CPP-ACP • Group 4: Laser bleaching and post-treatment CPP-ACP and short burst of laser. Specimens were, thereafter, subjected to cariogenic challenge and further evaluated for enamel solubility by measuring the loss of Ca2+ ions and the depth of demineralization using polarized light microscopy. Results: Group 4 exhibited least enamel solubility and depth of demineralization (p < 0.0001) followed by groups 3, 2 and maximum by group 1. Conclusion: Post-laser bleaching application of CPP-ACP followed by a short burst of laser can provide exceptional resistance to enamel solubility (demineralization).


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