Inhibition of enamel remineralization with blue LED: an in vitro study

Ilka Tiemy Kato D.D.S.; Fausto Medeiros Mendes D.D.S.; Denise Maria Zezell; Anderson Zanardi de Freitas; Marcus Paulo Raele; Niklaus Ursus Wetter

doi:10.1117/12.809725

18 February 2009 Inhibition of enamel remineralization with blue LED: an in vitro study

Ilka Tiemy Kato D.D.S., Fausto Medeiros Mendes D.D.S., Denise Maria Zezell, Anderson Zanardi de Freitas, Marcus Paulo Raele, Niklaus Ursus Wetter

Author Affiliations +

Proceedings Volume 7162, Lasers in Dentistry XV; 71620H (2009) https://doi.org/10.1117/12.809725
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

Blue light, especially from LED devices, is a tool very frequently used in dental procedures. However, the investigations of its effects on dental enamel are focused primarily on enamel demineralization and fluoride retention. Despite the fact that this spectral region can inhibit enamel demineralization, the consequences of the irradiation on demineralized enamel are not known. For this reason, we evaluated the effects of blue LED on enamel remineralization. Artificial lesions formed in bovine dental enamel samples by immersion in undersaturated acetate buffer were divided into three groups. In the first group (DE), the lesions were not submitted to any treatment. In the second (RE), the lesions were submitted to remineralization. The lesions from the third group (LED+RE) were irradiated with blue LED (455nm, 1.38W/cm², 13.75J/cm² and 10s) before the remineralization. Cross-sectional microhardness was used to assess mineral changes induced by remineralization under pH-cycling. The mineral deposition occurred preferably in the middle portion of the lesions. Specimens from group RE showed higher hardness value than the DE ones. On the other hand, the mean hardness value of the LED+RE samples was not statistically different from the DE samples. Results obtained in the present study show that the blue light is not innocuous for the dental enamel and inhibition of its remineralization can occur.

Citation Download Citation

Ilka Tiemy Kato D.D.S., Fausto Medeiros Mendes D.D.S., Denise Maria Zezell, Anderson Zanardi de Freitas, Marcus Paulo Raele, and Niklaus Ursus Wetter "Inhibition of enamel remineralization with blue LED: an in vitro study", Proc. SPIE 7162, Lasers in Dentistry XV, 71620H (18 February 2009); https://doi.org/10.1117/12.809725

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available