Dye-enhanced laser fluorescence detection of caries lesions around brackets

Autor(es)

Fornazari Alencar, Cassio Jose ^[1] ; Braga, Mariana Minatel ^[1] ; de Oliveira, Elisabeth ^[2] ; Nicolau, Jose ^[3] ; Mendes, Fausto Medeiros ^[1]

Afiliação do(s) autor(es)

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

^[2] Univ Sao Paulo, Inst Quim, BR-05508000 Sao Paulo - Brazil

^[3] Univ Sao Paulo, Fac Odontol, Oral Biol Res Ctr, BR-05508000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Lasers in Medical Science; v. 24, n. 6, p. 865-870, NOV 2009.
• Citações Web of Science: 10

Resumo

The aim was to evaluate the performance of DIAGNOdent {[}laser fluorescence(LF) and LFpen] devices enhanced by fluorescent dye in detecting mineral loss around brackets and comparing the inhibitory effect of bonding material on artificial demineralization, and to verify whether LF methods show the same trends of mineral loss. Brackets were bonded to premolar halves with Fuji Ortho LC, Transbond XT, and Ortho Glass LC cements (n = 15). The teeth were soaked in demineralizing solution (pH = 4.8) for 16 days. Mineral loss was calculated by atomic emission spectrometry, and lesions were measured with LF devices with dye {[}tetrakis N-methylpyridyl porphyrin (TMPyP)]. Groups were compared with regard to LF readings and mineral loss, and performance of caries detection was calculated. Higher mineral loss and LF-TMPyP values occurred in the resin group. LFpen-TMPyP readings were significantly higher in the demineralized groups. Correlation was observed between mineral loss and LF measurements. LF methods are capable of identifying lower demineralization around brackets bonded with resin-modified glass ionomer cements. (AU)

• Processo FAPESP: 06/04102-9 - Avaliação do desempenho de corantes fluorescentes associados ao DIAGNOdent para detecção de lesões naturais de cárie em superfície lisa e lesões ao redor de aparelhos ortodônticos
• Beneficiário: Fausto Medeiros Mendes
• Modalidade de apoio: Auxílio à Pesquisa - Regular