Background: Salivary pH is a critical factor in maintaining oral homeostasis and preventing dental caries. This study was undertaken to address the role of salivary pH in preventing enamel demineralization, specifically comparing bicarbonate-containing gum to ordinary gum and a control group to identify interventions that effectively raise pH above the critical threshold of 5.5.

Materials and Methods: A randomized controlled study was conducted with 60 healthy participants (30 males, 30 females, mean age 22.9 years) divided into three groups: Group 1 (No gum/Control), Group 2 (Bicarbonate gum), and Group 3 (Ordinary gum). Salivary pH was measured using a high-accuracy digital pH meter at baseline (Before), immediately after intervention (T_i), at 5 minutes (T₅), and at 10 minutes (T₁₀)

Results: At all post-intervention intervals (T_i, T₅, T₁₀), both gum groups showed a statistically significant increase in pH compared to baseline (p < 0.001). Group 2 (Bicarbonate gum) demonstrated the highest pH elevation (7.22±0.17 at T_i) compared to Group 3 (7.13±0.16) and Group 1 (6.49 ± 0.16). ANOVA confirmed significant intergroup differences (p < 0.001), and post hoc analysis revealed that bicarbonate gum was significantly more effective than ordinary gum (p < 0.05).