In-Office Tooth Bleaching for Adolescents Using Hydrogen Peroxide-Based Gels: Clinical Trial.

Marcela Leticia Leal Gonçalves,Luiz Alberto Plácido Penna,Antonio Carlos Da Silva Tavares,Ana Carolina Costa Da Mota,Alessandro Melo Deana,Sandra Kalil Bussadori

doi:10.1590/0103-6440201701516

Marcela Leticia Leal Gonçalves, Luiz Alberto Plácido Penna + Show 4 more

Open Access

https://doi.org/10.1590/0103-6440201701516

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Abstract

The aim of the present study was to evaluate colorimetric changes and tooth sensitivity in adolescents and young patients submitted to tooth bleaching with 20% and 35% hydrogen peroxide. A randomized, controlled, clinical trial was conducted with 53 patients aged 11 to 24 years who were allocated to groups based on the use of the following commercial products: Whiteness HP - FGM® (35% hydrogen peroxide); Whiteness HP Blue Calcium - FGM® (35% hydrogen peroxide); and Whiteness HP Blue Calcium - FGM® (20% hydrogen peroxide). After the bleaching procedure, the visual analog scale was used to measure tooth sensitivity and the Vita Classical Shade guide was used to determine changes in tooth color. Statistical analysis involved the Friedman, Kruskal-Wallis and Student-Newman-Keuls tests, with p≤0.05 considered indicative of statistical significance. The addition of calcium contributed to a reduction in tooth sensitivity, especially when the lower concentration of hydrogen peroxide (20%) was used. Tooth sensitivity occurred in a transitory way and did not influence the tooth bleaching process. Significant differences in color were found after each of the two bleaching sessions. In-office tooth bleaching was considered an effective method for adolescents and young adults. Further studies in this population are necessary in order to fully evaluate the effects of bleaching in young teeth.

Highlights

In dentistry, esthetics has become increasingly important in recent decades due to the fact that the media and advertising companies tend to emphasize the effect of a pleasing appearance in everyday situations
The aim of this study was to evaluate colorimetric changes and tooth sensitivity in young patients submitted to tooth bleaching with 20% and 35% hydrogen peroxide with and without the addition of calcium compounds
A reduction in sensitivity was found when calcium gluconate was added to the bleaching gel with 35% hydrogen peroxide in comparison to this same concentration without calcium compounds

Summary

Introduction

Esthetics has become increasingly important in recent decades due to the fact that the media and advertising companies tend to emphasize the effect of a pleasing appearance in everyday situations. Tooth color is one of the major concerns of such individuals, which has led to a greater demand for bleaching processes [1,2,3,4]. The American Academy of Pediatric Dentistry recognizes the growing interest in tooth bleaching among children and adolescents. Such interest likely stems from the increase in the variety, availability and popularity of bleaching products. While the literature indicates that tooth bleaching can be performed on young people, the majority of studies have involved adults and few controlled trials involving the younger population have been conducted. More common among adults, tooth darkening is a possible indication for bleaching procedures in children and adolescents. Other indications include white spots and stains on the anterior teeth due to fluorosis, which can be quite evident and undesirable [7]

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