BACKGROUND: Dental caries are still a health problem for children. One of the factors that play a role in children’s oral health is their parents. Parents are responsible for understanding the importance of maintaining oral health. AIM: The study aimed the effectiveness of the application of positive parenting in family dental nursing care on changes in the caries risk score of children in Peuniti Village, Banda Aceh City. METHODS: This research is quasi-experimental. The research design used was the equivalent control group design with pre-test and post-test. The population in this study were all families in Peuniti Village, Banda Aceh City which were included in the inclusion criteria as respondents. The sample in this study was selected by purposive sampling as many as 60 respondents were divided into two group the intervention group and control group. Data analysis was bivariate, using paired sample t-test and independent t-test. RESULTS: The results showed that there was no difference in the mean values of knowledge, attitudes, actions of mothers, and child caries risk scores before the intervention (pre-test) in the treatment group and the control group which was statistically significant (p > 0.05). There were differences in the mean values of knowledge, attitudes, actions of mothers, and children’s caries risk scores immediately after the intervention and 2 weeks after the intervention between the treatment group and the control group which were statistically significant (p < 0.05). There was a change in the average value of knowledge, attitudes, actions of mothers, and children’s caries risk scores after the application of positive parenting in family dental nursing care in the treatment group was statistically significant (p < 0.05). This research was entirely self-funded. CONCLUSION: There was a change in the average value of knowledge, attitudes, actions of the mother, and the child’s caries risk score after the application of positive parenting. Application of effective positive parenting in family dental nursing in Banda Aceh City.