作者: Julieta Gomes Tavares , Carlos de Paula Eduardo , Luiz Henrique Burnett , Teonas Renato Boff , Patrícia Moreira de Freitas
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摘要: Abstract Objective: The aim of this study was to investigate the effect Nd:YAG and argon laser irradiations on enamel demineralization after two different models induce artificial caries. Background data: It is believed that use high-intensity dental structure can lead a more acid-resistant surface. Materials methods: Twenty-one extracted human third molars were sectioned into tooth quarters. quarters distributed in three groups: Group I (control), untreated; II, (60 mJ, 15 pps, 47.77 J/cm2, 30 sec); III, (250 mW, 12 J/cm2, 48 sec). Tooth from each group subjected models: cycle 1, 14 day (pH 4.5; 6 h) remineralization 7.0; 18 h) solutions, 37°C 2, 48 h solution 4.5). Samples prepared slices (60–100 μm thick) be evaluated under polarized light microscopy. Demineralization areas measured (mm2) (n=11...