Restoring Enamel Strength: A Knoop Hardness Number Evaluation of Remineralizing Toothpastes

Aim This investigation compares and assesses the microhardness of human dental enamel after the use of two types of widely available remineralizing toothpaste. Methodology Thirty extracted anterior incisors were chosen as study samples and split into three groups: Control (Group 1), Enafix (EX-Group 2), and Sensodyne Repair (SR-Group 3). All of the sample groups were assessed using a Knoop indenter at baseline, after demineralization, and then again after remineralization. Then, to compare the outcomes for the variation in Knoop hardness, a one-way analysis of variance (ANOVA) was employed. Results The Control group exhibited the highest mean microhardness (472.00±17.783), indicating superior enamel integrity and the least variability. The EX group showed a lower mean microhardness of 340.40±40.368, demonstrating effective remineralization but with greater variability. Statistical analysis using ANOVA revealed highly significant differences between the groups, with an F-statistic of 104.292 and a p-value of 0.000, indicating that the variations in microhardness among the groups were statistically significant. Conclusion Both SR and EX toothpaste can effectively help dental enamel regain its hardness and remineralization following demineralization with slightly superior activity from EX.