In this study, the whitening effect of simulated body fluid (SBF) and side effects of a hydrogen peroxide (H2O2) as the bleaching treatment of tooth enamel surfaces was investigated. H2O2 solution of 25% and 30% was prepared by diluting the commercially available 35% H2O2 solution with either distilled water (DW) or SBF of 1×, 3×, and 5× concentrations. These diluted H 2O2 solutions were applied to the dental enamel surface of eighty human premolars for 15 min, followed by rinsing with DW. The procedure was repeated 4 times. The changes in color and surface microhardness before and after the bleaching procedure were recorded. The enamel surfaces of bleached teeth were examined with SEM. The results indicated that the brightness and microhardness of the tooth surface increased after bleaching with the SBF diluted agent compared to teeth treated with the DW diluted agent. These results might be due to the deposition of bone-like apatite that was observed with SEM. This bone-like apatite fills the area of roughness and holes in the enamel surfaces that were caused by bleaching, and created smoother and harder enamel surfaces. The result of this study suggested that a bleaching agent comprised of hydrogen peroxide and SBF would prevent the destructive side effects of bleaching and increase surface microhardness as well as having a whitening effect.
Bibliographical noteFunding Information:
This study was supported by a grant of the Korea Healthcare Technology R & D Project, Ministry of Health, Welfare & Family Affairs, Republic of Korea ( A101578 ).
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering