Objective. To compare peer-led dental education (PLDE) versus conventional dental instruction (CDI) in modifying children’s oral self-care. Materials and methods. The intervention group (two schools) received PLDE and the control group (two schools) received CDI. The quality of oralself-care practice (OSC-P) and oral self-care skills (OSC-S) were indicated by dental plaque levels (%) and compared before and after the dental education. Results. There were no baseline OSC-P differences between the control (55.8 ± 12.8%) and intervention (55.5 ± 14.6%) groups or OSC-S differences between the intervention (38.5 ± 13.2%) and control (38.1 ± 12.5%) groups. At the three-month follow-up we observed OSC-P deterioration in the control group (63.2 ± 15.0%) and OSC-P improvement in the intervention group (52.2 ± 15.6%). The OSC-P/OSC-S regression models found these predictors: baseline oral self-care, group affiliation, and mother’s education (p<0.05). Conclusion. The hypothesis was confirmed and significant predictors were baseline oral self-care levels, group affiliation, and mother’s education.

Aim. To test the efficiency and acceptance of school-based dental education for improving oral self-care in Mexican elementary school–aged children. Method. A total of 408 students from 4 schools were examined at the baseline, 3 months (follow-up rate was 94%) and 6 months observations (follow-up rate 91%). Group 1 served as a control, Group 2 received a lecture-based education, and Group 3 consisted of trained peer-leaders who educated their peers. Oral self-care practice and oral self-care skills were assessed at the baseline and both follow-ups. A number of sociodemographic and oral health behavior/knowledge characteristics were tested as predictors of oral self-care outcomes at different observation periods. Results. Oral self-care outcomes improved in Groups 2 and 3, but not in the control group. The selected child population, their caregivers and teachers perceived the school-based educational strategy as important and necessary. There was no consistent pattern of predictors explaining variations in oral self-care outcomes at any of the observation periods. Oral self-care improvement observed at the 6 months observation was mainly predicted by the baseline oral self-care levels, dental education, and age. Conclusions. The school-based dental education was easy to implement, and it was effective for improving children’s oral self-care practice and skills.