Journal of Clinical and Diagnostic Research (Dec 2021)
In-vitro Comparative Evaluation of Enamel Microhardness Remineralised with Diode and Er,Cr:YSGG Lasers along with CPP-ACP Remineralising Agent
Abstract
Introduction: Enamel demineralisation is a common consequence of orthodontic treatment and has been treated with a variety of methods and recent use of lasers has been investigated. Aim: To assess and compare the efficacy of diode laser, Erbium, Chromium-Doped: Yttrium, Scandium, Gallium and Garnet (Er,Cr:YSGG) with Casein Phosphopeptide Amorphous Calcium Phosphate (CPP-ACP) and CPP-ACP alone for remineralisation of the demineralised enamel surfaces. Materials and Methods: This in-vitro experimental study was conducted at Blue Lab, SIMATS, Chennai, Tamil Nadu, India, from February 2021 to March 2021. A total of 40 extracted sound human teeth were obtained and subjected to demineralisation (T0) and divided into three experimental groups of 10 teeth each and one control group with 10 teeth. The study groups were as follows: Group1 - artificial saliva, group 2- CPP-ACP, group 3 - Er,Cr:YSGG + CPP-ACP, group 4 - diode laser + CPP-ACP. Vickers Microhardness test was done after demineralisation (T0) and after remineralisation (T1). Descriptive statistics, paired t-test and one-way Analysis of Variance (ANOVA) followed by Post-hoc Tukey's test were done to evaluate intragroup and intergroup differences. Results: On intragroup comparison between T0 and T1 significant differences in microhardness were noted for all groups (p-value<0.05). At T1 the lowest mean microhardness value was noted in group 1 (210.13±41.20) and the highest mean value was noted in group 3 (255.86±41.53). Intergroup comparison revealed no significant difference in microhardness among the all four groups at T0 and T1 (p-value=1.0 and p-value=0.12 respectively). Conclusion: It can be concluded that both diode laser and Er,Cr:YSGG when used along with CPP-ACP are equally effective in remineralising demineralised enamel surfaces.
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