Background: The chemicals used in teeth whitening cause demineralization. One way that can be done to overcome this is by applying remineralizing materials. Utilization of natural materials containing calcium for tooth remineralization can be used as an alternative choice. Calcium is a major component in tooth structure and enamel demineralization caused by retention of calcium ions from tooth enamel. The calcium content of Moringa leaves is very high, making it possible to use it as a basic material for tooth remineralization applications. Objective: To prove the effect of applying Moringa leaf extract gel on the remineralization process in rat teeth. Methods: This research is a true experiment using a posttest only control group design. Samples were selected at simple random, the total sample size was 25 which were divided into two groups. For 14 days, after applying H2O2 30% of the control group was given CPP-ACP and the intervention group was given Moringa leaf extract gel with a concentration of 5%, 10% and 15%. Results: The results showed that there was a significant difference between the five groups in tooth hardness with p<0.05. Where the different groups were the positive control, the concentration groups were 15% and 10% with p<0.05. While the level of dental calcium p> 0.05. This shows that there is no significant difference between the five groups. Conclusion: Administration of moringa leaf extract gel (Moringa oleifera Lam.) for 14 days to the teeth of rats that had been demineralized with 30% H2O2 had an effect on increasing the hardness of rat teeth but had no effect on the amount of dental calcium of rats.

Keywords : Demineralization, Remineralization, Moringa Leaves, Tooth Hardness, Dental Calcium