Aesthetic effect of minimally invasive therapy on stained dental fluorosis.
Objective: To observe the aesthetic effect of low concentration of at-home bleaching combined with microabrasion and resin infiltration on stained dental fluorosis. Methods: Twenty-three patients with stained dental fluorosis were selected from June 2017 to June 2018 in Stomatological Hospital of Tianjin Medical University. All patients were treated with minimally invasive whitening technology of microabrasion, 10% low concentration of at-home bleaching and resin infiltration. The aesthetic treatment effect was observed before and after treatment by VITA aesthetic shade guide matching. Stained spots were chosen and colorimetric assay was performed using CMYK shade guide before treatment. According to the color of the splash, the light and shade were divided into light grade, medium grade and heavy grade. The CMYK data of the selected spot and complete decolorization ratio (stain decolorization rate) were recorded 1 week and half a year after treatment. Meanwhile, tooth sensitivity was recorded using visual analogue scale (VA5). Results: The shades of 92 teeth of 23 dental fluorosis patients were increased more than 5 degrees after a series of whitening treatment, 1 tooth was 2 - 4 degrees, and the total effective rate was 100.00% (92/92). Decolorization rates of light grade, medium grade and heavy &tale were 100.00% (100/100), 100.00% (120/120) and 97.78% (88/90), respectively, 1 week after treatment. Half a year after treatment, bleaching decolorization rate had no significant difference compared with that of I week after treatment (P > 0.05). Tooth sensitivity was 91.30%(21/23). Almost all patients had mild and moderate teeth sensitivity during treatment. The symptoms of tooth sensitivity were disappeared after the treatment. Conclusions: The whitening technology of microabrasion, 10% low concentration of at-home bleaching and resin infiltration has a significant decolorization whitening effect, and has a certain degree of stability and no sensitive teeth after treatment. It is worthy of clinical application.