Singh, Japsimretjit Kaur Manjit and Sengut, Masturah and Halim, Mohamad Syahrizal and Ab‑Ghani, Zuryati and Rahman, Normastura Abd (2018) Safety Comparison of Over the Counter Bleaching with Professionally Prescribed Home Bleaching Agent. European Journal of Dentistry, 7 (2). pp. 35-40. ISSN 1305-7456
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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.
| Item Type: | Article |
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| Subjects: | R Medicine > RK Dentistry > RK1-715 Dentistry |
| Divisions: | Kampus Kesihatan (Health Campus) > Pusat Pengajian Sains Pergigian (School of Dental Sciences) > Article Zoom Profil Pakar (Expert Profile) > Mohamad Syahrizal Halim (Dental Sciences) |
| Depositing User: | Administrator Automasi |
| Date Deposited: | 17 Sep 2019 04:29 |
| Last Modified: | 17 Sep 2019 04:29 |
| URI: | http://eprints.usm.my/id/eprint/45436 |
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