EFFECTS OF THE TEETH DECONTAMINATION TREATMENT ON DENTIN COMPONENTS: A RAMAN SPECTROSCOPY ANALYSIS

Raman spectroscopy evaluated changes in the dentin components submitted to decontamination methods. Twelve human third molars were divided into two groups: six teeth were stored in thymol (group A) and six teeth were autoclaved (group B). The enamel was removed and the dentin components were evaluated before and after the 37% phosphoric acid etching. The evaluation of the dentin components was done by calculating the relative area of the 961, 1260 and 1670 cm peaks. Statistical analyses were performed by ANOVA and Bonferroni test. Non-significant differences were found in the group A for the peak at 1670 cm. However, a significantly reduction was observed in the group B. Non-significant differences were found in both groups for the peak at 1260 cm. Statistical differences for the PO4 component were found in both groups. Raman spectra showed that the components of the autoclaved teeth were more affected.