Original scientific paper

Colorimetric Assessment of Different Tooth Whitening Procedures

Jelena Paliska ; Student, School of Dental Medicine, University of Zagreb, Croatia
Andro Stipetić ; Private dental office, Zagreb, Croatia
Zrinka Tarle ; Department of Endodontics and Restorative Dentistry, School of Dental Medicine, University of Zagreb, Croatia
Mira Ristić ; Rudjer Boskovic Institute, Zagreb, Croatia
Ticijana Ban ; Institute of Physics, Zagreb, Croatia
Nataša Vujićić ; Institute of Physics, Zagreb, Croatia
Goran Pichler ; Institute of Physics, Zagreb, Croatia

Abstract

Objective: To study the efficiency of four different tooth whitening procedures we examined 30% carbamide peroxide gel alone and compared it with two available in-office whitening methods (Discus Dental, Culver City, CA, USA and Beyond Technology Corp, Santa Clara, CA, USA) and a procedure involving a femtosecond laser which consists of a 6W green laser pump (Millennium, Spectra Physics) and a mode-locked laser (Tsunami, Spectra Physics) which have not been clinically tested so far. Material and Methods: 40 pastilles of hydroxylapatite were used and immersed in green tea for 8 hours. After drying, pastilles were randomly divided into 4 groups, each consisting of 10 pastilles and treated with one of the 4 bleaching procedures. The color of pastilles was determined by the colorimeter in the RGB index prior to immersion into the tea, after the immersion and after the whitening treatment. Non-parametric tests were used for the analysis of colorimetric sum values - Kruskal-Wallis and Mann-Whitney test for independent samples and Wilcoxon test for dependent samples. Results: The colorimetric sum value for the pastilles treated with the gel only was 3024.42, for the pastilles treated with ZOOM 2 it was 2999.74, for the pastilles treated with Beyond it was 2944.12 and for the laser-treated pastilles it was 2687.22. The best results were obtained using the 30% carbamide peroxide gel and ZOOM2, followed by Beyond and the femtosecond laser method, which exhibited a whitening effect proportional to treatment duration and gel concentration. Conclusion: Although all four bleaching methods proved effective, the final result of bleaching depends upon the duration of treatment and the type and concentration of the gel applied.

Keywords

Tooth Bleaching; Carbomide Peroxide; Laser

Hrčak ID:

76020

URI

https://hrcak.srce.hr/76020

Publication date:

20.12.2011.

Article data in other languages: croatian

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