Aim of the study: The study was conducted to evaluate the change in color of white spot lesions of human premolar teeth after application of different non-invasive treatment modalities.
Methodology: 35 human sound premolar teeth were collected, they were randomly assigned into 5 groups each contained 7 samples. Group1: Non-fluoride toothpaste (NF) applied to WSLs twice a day for 30 days, Group2: Non-fluoride toothpaste applied to WSLs twice a day for 30 days followed by resin infiltration (NF/I), Group3: Fluoride Toothpaste applied on WSL for 30 days (F), Group4: Fluoride toothpaste applied for 30 days followed by resin infiltration (F/I), Group5: Resin infiltration applied for once. Enamel shade of each tooth was measured using the Vita Easyshade device before formation of white spot lesion, after white spot lesions and after application of different treatments.
Results: The lowest ΔE calculated belonged to (I) group meaning that the resin infiltration was the treatment giving the lowest difference in enamel shade before and after treatment. There was no statistical significance between the ΔE of (NF/I) group and the (I) group. Both groups gave clinically accepted results. The highest ΔE belonged to (NF) group. There was no statistical significance between the (F) and the (F/I) groups, also both showed clinically unaccepted results. Group 5 (I) also showed the lowest statistical ΔL* value of the treated surface.
Conclusions:
Resin infiltration (ICON) has a determinant effect on improvement of artificially induced white spot lesions. Resin infiltration outcome is affected by fluoride application.