Micro-BTevaluation of white spot lesion treatment with different procedures

White spot lesions are subsurface enamel lesions that can occur in four weeks and cause serious esthetical problems for the patients. The aim of this study was to evaluate the effects of GC Tooth Mousse which involves casein phosphopeptide–amorphous calcium phosphate, 50 ppm sodium fluoride (NaF) solution, Clinpro 5000 which involves highly concentrated NaF and two different microabrasion techniques on white spot lesions with Micro Computed Tomography. In this study, 66 teeth were used for 6 groups,11 teeth for each group. The teeth chosen for this study were controlled in the daylight and only those whose enamel surface showed adequate proporties were used. After the white spot lesion was formed, different remineralization agents (Artificial Saliva, GC Tooth Mousse, Clinpro 5000, 50 ppm NaF) were applied for the first four groups and Micro Computed Tomography scannings were done in these groups in the following periods: T0 (sound enamel), T1 (0.day that white spot lesion was formed), T2 (15th day of the treatment), and T3 (30th day of the treatment). For the other two groups different microabrasion protocols were applied and Micro Computed Tomography scannings were done at T0, T1 and T2 periods. The volume (mm3), depth (mm), surface area (mm2) and mineral density (g/cm3) of the white spot lesion of the first four groups were counted in different time points and these values are compared in group and with other groups. In two different microabrasion groups, scannings were done in three different time points and the first and the last images were compared with three dimensional image analysis programme [SkyScan Dataviewer 1.5.0 64 Bites (SkyScan, Kontich, Belgium)] and the amount of the enamel loss and its depth were calculated. GC Tooth Mousse and Clinpro 5000 agents improved all of the measurements about the lesion after 30-day-treatment. However, Clinpro 5000 agent was not found to be effective in lesion depth as it is in other parameters. The artificial saliva group and 50 ppm NaF solution was not obtained statistically significant effect in the regression of the white spot lesions at the end of the 30-day-experiment period. There were no statistical differences among microabrasion groups. GC Tooth Mousse involving casein phosphopeptide–amorphous calcium phosphate and Clinpro 5000 involving highly concentrated NaF could be preferred at the treatment of the white spot lesions that occur during the orthodontical treatments. Low-concentrated NaF and artificial saliva were obtained inadequately remineralisation. Enamel loss occurs due to microabrasion treatment. Key Words: White Spot Lesion, Micro-BT, Enamel Demineralization, Fluor,Microabrasion.