Is the red fluorescence of dental plaque related to its cariogenicity?

Autor(es)

Bittar, Daniela G. ^[1] ; Pontes, Laura Regina A. ^[1] ; Calvo, Ana Flavia B. ^{[1, 2]} ; Novaes, Tatiane F. ^[1] ; Braga, Mariana M. ^[1] ; Freitas, Patricia M. ^[3] ; Tabchoury, Cinthia P. M. ^[2] ; Mendes, Fausto M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Dent, Dept Pediat Dent, BR-05508000 Sao Paulo - Brazil

^[2] Univ Estadual Campinas, Piracicaba Dent Sch, BR-13414903 Piracicaba - Brazil

^[3] Univ Sao Paulo, Sch Dent, Dept Restorat Dent, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Biomedical Optics; v. 19, n. 6 JUN 2014.
• Citações Web of Science: 13

Resumo

It has been speculated that the red fluorescence emitted by dental plaque could be related to its cariogenicity. To test this hypothesis, we designed this crossover in situ study, with two experimental phases of 14 days each. Seventeen volunteers, wearing a palatal appliance with bovine enamel blocks, were instructed to drip a 20% sucrose solution (experimental group) or purified water (control group) onto the enamel blocks eight times daily. The specimens were removed after 4, 7, 10, and 14 days, and the red fluorescence of dental plaque formed on the enamel blocks was assessed using a quantitative light-induced fluorescence device. After the plaque removal, surface and cross-sectional microhardness tests were performed to assess the mineral loss. The comparisons were made by a multilevel linear regression analysis. We observed a significant increase in the red fluorescence of the dental plaque after longer periods of formation, but this trend was verified in both groups. The mineral loss assessed by the microhardness techniques, contrariwise, showed a significant increase only in the experimental group. In conclusion, the red fluorescence emitted by the dental plaque indicates a mature biofilm, but this fact is not necessarily associated with its cariogenicity. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. (AU)

• Processo FAPESP: 09/16082-0 - Associação entre fluorescência vermelha emitida pelo biofilme dentário e atividade de cárie
• Beneficiário: Tatiane Fernandes de Novaes
• Modalidade de apoio: Bolsas no Brasil - Doutorado