Influência dos materiais resinosos nos valores de fluorescência a laser após tratamento micro-invasivo de lesões de cárie proximais em molares decíduos.

• Ano de defesa: 2021
• Autor(a) principal: Almeida, Selita Barbosa de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Cruzeiro do Sul; Brasil; Programa de Pós graduação em Odontologia; Cruzeiro do Sul
• Palavras-chave em Português: Cárie dentária; Dente decíduo; Radiografia dentária digital; Materiais dentários; Diagnóstico; Fluorescência; Técnicas In Vitro; CNPQ::CIENCIAS HUMANAS::EDUCACAO::ENSINO-APRENDIZAGEM::METODOS E TECNICAS DE ENSINO
• Link de acesso: https://repositorio.cruzeirodosul.edu.br/handle/123456789/4034

The detection of approximal caries lesions is a challenge for the dental professional. Therefore, fluorescence-based methods have been developed to assist in this process. However, there is still a gap regarding the performance of these methods for incipient caries lesions treated with resin infiltrant and adhesive system. The aim of this study was to evaluate in vitro the influence of resin-based materials on the fluorescence values of the DIAGNOdent pen (LFpen) device in the micro-invasive treatment of approximal caries lesions in primary molars. Seventy-two newly extracted and frozen at -20 °C primary molars were selected, with at least one approximal surface with an active incipient caries lesion ICDAS 2 (International Caries Detection & Assessment System) and radiographically with translucency in the inner half of enamel (E2) or in the inner third of dentin (D1). The primary teeth were randomly divided into two groups: (Group I) Scotchbond® - adhesive system (n=36; approximal surfaces) and (Group II) Icon® - resin infiltrant (n=36; approximal surfaces). Two trained examiners performed independently assessed the teeth with LFpen twice, with a one-week interval between them, before treatment (baseline) and after treatment. Then, the teeth were prepared for histological evaluation under a polarized light microscope, and the depth of the lesion body and its area were determined using Image J software. Data were analysed by inferential statistics, with a significance 9 level of 5%. The Intraclass Correlation Coefficient (ICC) showed satisfactory to excellent agreement for intra- and inter-examiner reproducibility for LFpen before and after treatment of caries lesions with adhesive system and resin infiltrant. There was a significant reduction in the fluorescence values of LFpen after treatment with an adhesive system and resin infiltrant on approximal surfaces of primary molars (p<0.05). It could be observed that there was no statistically significant difference regarding the histological area (mm2 ) of the approximal caries lesions between both groups (p>0.05). There was no significant correlation comparing the histological area of the approximal caries lesion and the laser fluorescence values (before, after and difference) by LFpen for both groups (p>0.05). It can be concluded that the fluorescence values obtained by LFpen showed a significant decrease after micro-invasive treatments of non-cavitated approximal caries lesions in primary molars, both with adhesive system and resin infiltrant.