A Spectrophotometric Study on Light Attenuation Properties of Dental Bleaching Gels: Potential Relevance to Irradiation Parameters

Dentistry Journal

Marianna Chala¹  Vasilis Dimitriou²  Kyriaki Kosma²  Michael Tatarakis²  Nektarios Papadogiannis²  Edward Lynch³  Eugenia Anagnostaki³  Valina Mylona³  Martin Grootveld³  Mark Cronshaw³  Steven Parker³ 

[1] Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, 16132 Genoa, Italy;Institute of Plasma Physics and Lasers, Hellenic Mediterranean University, Tria Monastiria, 74100 Rethymno, Greece;Leicester School of Pharmacy, De Montfort University, Gateway House, Leicester LE1 9BH, UK;

关键词: dentistry;    absorption;    bleaching;    laser;    light;    parameters;   

DOI  :  10.3390/dj8040137

来源: DOAJ

【 摘 要 】

Background: During in-office bleaching, appropriate light sources are applied in order to enhance the activity of the bleaching gels applied onto teeth. For this method to be effective, a high absorption of light within the gel is necessary. Variation in the light attenuation capability of the gel, the duration of application and light activation can contribute towards safety hazards associated with this procedure. Methods: In this study, seven different gels and hydrogen peroxide have been evaluated for their optical properties by means of spectrophotometry (440–1000 nm). The transmitted light spectrum was used to estimate the intensity loss for each gel. The mean intensity decreases observed were statistically analysed using an analysis of variance (ANOVA). Results: The five more-pigmented gels tested indicated a very similar intensity loss of around 80%, whereas the remaining two gels showed significantly less attenuation (predominantly, p < 10⁻⁶). Conclusions: Throughout the spectrum of wavelengths examined, and according to the underlying studies evaluated, five of the gels assessed demonstrated an attenuation high enough to possibly avoid overheating of the underlying enamel dentine and pulp. An evaluation of appropriate irradiation parameters is proposed.

【 授权许可】

Unknown