Evaluation of the demineralization potential of dental bleaching gel (35% hydrogen peroxide) in bovine enamel

Tatiana Ortega Troglio, Julio Katuhide Ueda, Veridiana Camilotti, Priscilla do Monte Ribeiro Busato, Adriano Tomio Hoshi

Objective: This study aimed at performing a quantitative analysis of the demineralization potential of dental bleaching gel (35% hydrogen peroxide), compared to 37% phosphoric acid gel, in bovine enamel samples. Methods: fifteen bovine enamel fragments with 30 ± 2mm2) were prepared and divided into three groups (n = 5): group I – saline solution, without bleaching agent; group II – 35% H2O2 bleaching gel applied for three times of 15 minutes each; and group III – 37% phosphoric acid for 30 seconds. The specimens were weighed on an analytical balance before and after the immersion in the solutions. The demineralization was calculated using these weights and the dimensions of the samples. Results: the data were submitted to statistical analysis, which indicated that 35% hydrogen peroxide leads to a statistically lower enamel demineralization than 37% phosphoric acid conditioning, and similar to the control group (saline solution). Conclusion: it can be claimed that the tooth whitening using 35% hydrogen peroxide presents itself as a viable dental procedure, being tolerated by the dental enamel.

Keywords: Dental enamel. Demineralization. Tooth bleaching.

How to cite: Troglio TO, Ueda JK, Camilotti V, Busato PMR, Hoshi AT. Evaluation of the demineralization potential of dental bleaching gel (35% hydrogen peroxide) in bovine enamel. J Clin Dent Res. 2018 Jan-Mar;15(1):105-9. DOI: https://doi.org/10.14436/2447-911x.15.1.105-109.oar

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