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CC BY-NC-ND 4.0 · European Journal of General Dentistry 2018; 7(02): 35-40
DOI: 10.4103/ejgd.ejgd_27_18
Original Article

Safety comparison of over the counter bleaching with professionally prescribed home bleaching agent

Japsimretjit Kaur Manjit Singh
Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
,
Masturah Sengut
Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
,
Mohamad Syahrizal Halim
Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
,
Zuryati Ab-Ghani
Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
,
Normastura Abd Rahman
Department of Conservative Dentistry, School of Dental Sciences, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia
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Abstract

Aims: This aimed to compare the colour changes, microhardness, and surface roughness of the human natural tooth after bleaching treatment with a professional home bleaching agent and over-the-counter (OTC) bleaching agent. Settings and Design: This was an in vitro study using extracted human teeth stained with human blood as specimens. Materials and Methods: Fifty-seven human natural teeth were embedded in acrylic of 2.5 mm thickness and 14 mm × 8 mm surface area. The samples were stained with human blood before they were divided into three groups (n = 19 per group) of control (C), Professional Bleaching Opalescence PF 15% (PB), and OTC Whitelight Tooth Whitening set (WL) before being treated with the respective bleaching agents for 10 days. Color changes were measured as colorimetric measurements (L*, a*, and b* values) were recorded during prestaining, poststaining, and postbleaching, while microhardness and surface roughness measurements were recorded for pre- and postbleaching. Statistical Analysis: Statistical analysis was done with SPSS (IBM Statistic, California, USA) version 22.0. Paired t-test and nonparametric analysis (Wilcoxon Signed-Rank Test) were used to analyze the data. P value was set as significant at P < 0.05. Results: The color changes in PB group was not significantly better compared with WL group (PB: 12.2 [4.07] and WL: 12.2 [4.32]). Whereas significant difference was noticed in microhardness after bleaching in PB group with a higher VHN number (500.4 [121.10]) compared with WL group (471.0 [114.47]) . The surface roughness (Ra) remain the same for all experimental groups. Conclusions: Both professional home bleaching agent and OTC bleaching agents showed similar efficacy, with no effect on surface roughness, and both caused an increase in microhardness.

Keywords

Home bleaching - over the counter bleaching - professionally prescribed home bleaching

Financial support and sponsorship

This study was financially supported by USM Short Term Grant: 304/PPSG/61313102.




Publication History

Article published online:
01 November 2021

© 2018. European Journal of General Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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