2.3. Dental Examination and Monitoring
caries lesions
Observations and clinical examinations were conducted at schools. After 12 and 24 months, the clinical examination was repeated to assess the dental status of schoolchildren following the same criteria described. The presence of new caries lesions was taken as a dependent variable. So, sound surfaces on baseline were observed for 24 months.In all children, daily brushing was performed with the same toothpaste and toothbrush, supervised by schoolteachers, with fluoride toothpaste (1400 ppm) at school.