Using Optical Attenuation Coefficient to Monitor the Efficacy of Fluoride and Nd:YAG Laser to Control Dentine Erosion

Autor(es)

Dias-Moraes, Marcia C. ^[1] ; Lima, Cassio A. ^[1] ; Freitas, Anderson Z. ^[1] ; Aranha, Ana Cecilia C. ^[2] ; Zezell, Denise M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Pesquisas Energet & Nucl, BR-05508000 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Fac Odontol, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: APPLIED SCIENCES-BASEL; v. 9, n. 7 APR 1 2019.
• Citações Web of Science: 0

Resumo

The present study evaluated the protective effects that are induced by fluoride and Nd:YAG laser irradiation to control dentine erosion. One hundred and twenty bovine dentine slabs were eroded with citric acid twice a day for a total period of 15 days. At day 10, the samples were randomly assigned into eight groups: C (Control); F (Fluoride); L1 (Nd:YAG laser, 1 W, 100 mJ, 79.5 J cm( -2)); L2 (Nd:YAG laser, 0.7 W, 70 mJ, 55.7 J cm( -2)); L3 (Nd:YAG laser, 0.5 W, 50 mJ, 39.7 J cm( -2)); F + L1; F + L2; and, F + L3. Optical Coherence Tomography images were collected from the surface of the samples in order to monitor the alterations that were induced by erosion and the effectiveness of each treatment using the Optical Attenuation Coefficient (OAC). OAC values that were calculated for samples from groups C, F, L1, L3, FL1, and FL3 indicated no protective effects against the progression of erosive lesions. Samples from L2 and FL2 groups presented OAC values, indicating that laser irradiation under this condition did not induce the formation of craters on dentine tissue and promoted sufficient chemical and morphological changes to avoid the progression of dentine erosion. (AU)

• Processo FAPESP: 13/09311-9 - Utilização de padrões de speckle nas imagens de tomografia por coerência óptica para caracterização de circuitos microfluídicos e microcirculação em tecido
• Beneficiário: Anderson Zanardi de Freitas
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 05/51689-2 - Centro de Pesquisa em Óptica e Fotônica - UNICAMP (CEPOF-UNICAMP)
• Beneficiário: Hugo Luis Fragnito
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs