Difference of UltraViolet induced fluorescence (UVIF) in anterior teeth according to age.

Objectives: To determine the visible fluorescence induced by UV light (UVIF) in anterior teeth of patients from different age groups.
Methods: 35 participants were recruited and divided according to age into 5 groups of 7 individuals each, a sample of 70 teeth (upper central incisors) was obtained. Teeth were photographed under a UV light source to generate the fluorescence phenomenon. Each tooth was evaluated as a whole and in thirds. Image J software was used to obtain the color coordinates in the CIELab space. The data obtained were analyzed through the statistical tests of Shapiro Wilk and Kruskal-Wallis.
Results: In the complete crown and cervical third, statistically significant differences were found in L, a *, and b * UVIF between the different age groups. In the middle and incisal third, no significant differences were found in the b * coordinate between the 5 age groups. In addition, in all the areas evaluated it was observed that there were variations of the 3 coordinates with age, but that they did not change in a continuous linear manner.
Conclusions: There were statistically significant differences in UVIF measured in CIELab color coordinates when comparing the different age groups.