Résumé
Background and aim: world Health Organization [WHO] and international federation of dentistry have considered the rate of DMFT at the age of 12 for permanent teeth in the year of 2000 and 2010 maximum as 3 and 1, respectively. The aim of this study was to assess DMFT status and factors affecting on it among 12-year-old children in Ardekan
Methods and Materials: in this observational, descriptive, functional study which was conducted cross-sectionaly, 607 samples [304 urban and 303 rural] were chosen randomly from guidance schools of Ardekan and its suburbs. In this investigation, the effects of different factors on DNFT such as accommodation status number of children, tool-h-brushing status were studied and the maximum effect was attributed to tooth brushing with a considerable decrease on DMFT. Data were subjected to t-test and Chi-Squre and compared by Variance analysis
Results: the rate and total standard deviation of DMFT in Ardekan was 1.453+: 1.5, that 1.6475 1.533 in the city and 1.479k1.372 in villages. Mean caries free people was 4176, in the city 40% and in village 42%. Mean decayed teeth [D] in the city and villages were 1.07 and 1.207, respectively. Mean extracted teeth in the city was 110% and that of villages was 46%. Mean filled teeth in the city and villages were 831% and 46%, respectively
Conclusion: average DMFT based on sex was 1.092 for females and 1.987 for males in the city and 1.453 for females and 1.293 for males in villages