بررسي شاخص DMFT در دانش آموزان عقب مانده ذهني 12-8 ساله مدارس استثنايي شهر يزد در سال 1380

The prevalence of DMFT among mild mental retardation children 8-12 years -old from special Yazd schools

Background & Aim: Main purpose of this cross sectional study was to assess the prevalence of DMFT among 100 mild mental retard (1Q-50-70) studetns 8-12 years -old from special Yazd schools. Methods & Materials: One hundred mild mental retardation children 8-12 years old (46 girl and 54 boy) were chosen from special Yazd schools and the data from the questionnaires were analyzed by computer, using the SPSS software. Results: The average of DMFT in 8 - 12 year - old special students was 5.95+3.83 (6.93+3.54 for girls and 5.11+3.89 for boys). Of the total DMFT obtained, 4.3 was ascribed to dental caries, 1.46 to extracted teeth due to caries, and the last 0.19 to restorated teeth. Ten percent of population were caries free and in twelve percent of population had DMFT more than 10. Conclusion: The results showed no significant difference between parentʹs education and the rate of dental caries in students. But there was significant reduction of DMFT in the students who brushed regularly (p-value = 0.0001).