Comparison of Herbal and Potassium Nitrate Toothpastes in Managing Dentin Hypersensitivity: A Randomized Controlled...

Background/Objectives: This study evaluates the effectiveness of a toothpaste containing Java Tea and Little Ironweed in alleviating tooth sensitivity compared to a conventional potassium nitrate toothpaste. Methods: A total of 90 healthy patients aged 18-70 with up to two teeth exhibiting gingival recession were recruited into this study. All selected teeth had a visual analog scale (VAS) score ≥ 4 in response to tactile or air blast stimuli. Excluded teeth included those requiring restoration or participants undergoing treatments affecting sensitivity or taking pain medication/anti-sensitivity agents. Participants were randomly divided into three groups and instructed to brush twice daily with different toothpastes. The S1 group was prescribed toothpaste containing Java Tea and Little Ironweed extract, the S2 group was prescribed toothpaste containing Java Tea and Little Ironweed extract with 0.7% potassium nitrate, and the S3 group was prescribed toothpaste containing potassium nitrate. VAS scores were recorded at baseline, 2 weeks, and 4 weeks. Data were then compared and statistically analyzed between the groups. Results: For the tactile test, the final number of included teeth was 47 in the S1 group, 46 in the S2 group, and 22 in the S3 group. For the air blast test, the number of teeth included was 38 in the S1 group, 30 in the S2 group, and 27 in the S3 group. At baseline, mean VAS scores were comparable across groups for both tactile (S1: 6.89 ± 0.98; S2: 6.65 ± 1.52; S3: 6.82 ± 1.99) and air blast tests (S1: 7.39 ± 1.15; S2: 7.53 ± 1.31; S3: 6.89 ± 2.12). All groups showed significant reductions in VAS scores from baseline at both 2 and 4 weeks. A Kruskal-Wallis test indicated significant between-group differences in VAS scores at 2 and 4 weeks (p = 0.001). Post hoc analysis (Dunn's test with Bonferroni correction) at 2 weeks revealed that the S1 group had significantly higher VAS scores than those of S2 (tactile p = 0.001, air blast p = 0.001) and S3 (tactile p = 0.002, air blast p = 0.018). By 4 weeks, the S2 group demonstrated superior efficacy, with significantly lower VAS scores compared to those of S1 (tactile p < 0.001, air blast p = 0.030) and S3 (tactile p = 0.035, air blast p = 0.001). Conclusions: All tested toothpastes effectively reduced dentin hypersensitivity over the study period. Potassium nitrate toothpaste provided more rapid initial relief, when compared to the herbal formulation alone; however, both achieved similar outcomes by 4 weeks. The herbal toothpaste supplemented with potassium nitrate demonstrated superior efficacy and may offer a promising natural alternative for managing dentin hypersensitivity.