| Texto completo | |
| Autor(es): |
Turrioni, Ana Paula S.
[1]
;
Alonso, Juliana R. L.
[1]
;
Basso, Fernanda G.
[1]
;
Moriyama, Lilian T.
[2]
;
Hebling, Josimeri
[1]
;
Bagnato, Vanderlei S.
[2]
;
de Souza Costa, Carlos A.
[1]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Paulista, Araraquara Sch Dent, UNESP, BR-14801903 Araraquara, SP - Brazil
[2] Univ Sao Paulo, Sao Carlos, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | AMERICAN JOURNAL OF DENTISTRY; v. 26, n. 6, p. 319-323, DEC 2013. |
| Citações Web of Science: | 8 |
| Resumo | |
Purpose: To evaluate the transdentinal light attenuation of LED at three wavelengths through different dentin thicknesses, simulating cavity preparations of different depths. Methods: Forty-two dentin discs of three thicknesses (0.2, 0.5 and 1 mm; n = 14) were prepared from the coronal dentin of extracted sound human molars. The discs were illuminated with a LED light at three wavelengths (450 +/- 10 nm, 630 +/- 10 nm and 850 +/- 10 nm) to determine light attenuation. Light transmittance was also measured by spectrophotometry. Results: In terms of minimum (0.2 mm) and maximum (1.0 mm) dentin thicknesses, the percentage of light attenuation varied from 49.3% to 69.9% for blue light, 42.9% to 58.5% for red light and 39.3% to 46.8% for infrared. For transmittance values, an increase was observed for all thicknesses according to greater wavelengths, and the largest variation occurred for the 0.2 mm thickness. All three wavelengths were able to pass through the dentin barrier at different thicknesses. Furthermore, the LED power loss and transmittance showed wide variations, depending on dentin thickness and wavelength. (AU) | |
| Processo FAPESP: | 11/13895-0 - Efeito direto e transdentinário do LED infravermelho sobre células-tronco da polpa dentária humana in vitro e sobre o complexo dentino-pulpar in vivo |
| Beneficiário: | Ana Paula Silveira Turrioni |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |