RESUMO
It is presented the assessment of the weekly fluoride mouthwash program conducted among public primary school students in Palma de Majorca, Balearic Islands, Spain. It was carried out with students of 5th year (aged 10 years old) who had been participating in the program for four years. The prevalence of caries according to the CFLT index (Cavity Filling Lost Tooth) in those students who followed the program is compared with the rest of the 5th year students to whom the program was not applied. According to the CFLT index, the difference noticed between the two groups was 21.15%. This caused a 0.52% reduction of decayed pieces per child following the program. In the same way, the restoration index is 50% higher in the group of intervention than in that of control.