Pulpal Blood Flow Changes During Treatment Of Reversible Pulpitis

To assess the changes in pulpal blood volume in children's permanent teeth during reversible pulpitis treatment. Thirty-four molars with incomplete root development, diagnosed with reversible pulpitis, were randomly assigned to three groups (A, B, C) for treatment. Group A received a traditional calcium hydroxide liner, Group B used tricalcium silicate-based cement, Group C combined light-activated disinfection with tricalcium silicate-based cement. Pulpal blood volume (in standard units) and oxygenation (in percentages) were measured using laser Doppler flowmetry (Lakk-02 HPP “Lasma”) before treatment, and at two weeks, one-, three-, and six months post-treatment. Data are presented as medians. Friedman's test with post-hoc analysis was applied. The study was approved by the local ethics committee. Pulp oxygenation increased in both Group A (from 80.7 to 88.3; p=0.001) and Group B (from 86.8 to 95.2; p=0.005) by the third month. In Group C, significant improvement was observed two weeks post-treatment (from 82.1 to 94.1; p=0.008). A decrease in pulpal blood volume occurred by the sixth month in Group A (from 6.7 to 4.97; p=0.004), by the first month in Group B (from 6.6 to 4.7; p=0.009), and by two weeks in Group C (from 5.9 to 3.5; p=0.008). The combination of light-activated disinfection and tricalcium silicate-based cements provides the most rapid improvement in pulpal hemodynamics.