Methods: Examinations were performed without drying the teeth with dental mirrors and blunt sickle-shaped explorers under a dental chair light according to WHO recommendations. Seven site for molars and six sites for premolars, canines and incisors were coded on diagnosis charts of patient in respect to caries experience. Also, sex and age for each caries tooth was recorded. The patients ages were divided as six groups: 1, 17-25 ages; 2, 26-35 ages; 3, 36-45 ages; 4, 46-55 ages; 5, 56-65 ages; 6, >65 ages. Pearson Chi-Square, Fisher's Exact and Mann-Whitney U tests were used for statistically analyses.
Results: Totally, 2383 tooth with caries was examined, 1408 (59.1%) were in female and 975 (40.9%) were in male. Females showed a higher incidence of (59.1%) contribution to caries than males (40.9%). Approximal surfaces of incisors, canines, premolars and occlusal fissures sites in molars showed highest caries rates in both sex. The prevalence of caries experience was the highest in 17-25 ages group (47.2%) years. However, caries prevalence for individual tooth surfaces decreased with an increase in age (26-35 ages:21.8%; 36-45 ages:18.5; 46-55 ages:9%; 56-65 ages:2.8%; >65 ages:0.7%). Approximal surfaces of incisors, canines, premolars and occlusal fissures (p<0.05) of molars were had the highest caries rates in all age groups except >65 age group. Also, molar teeth contributed much more caries experience than the incisors, canines, or premolars in all age groups.
Conclusions: Occlusal surfaces with fissures of molar teeth and approximal surfaces incisors, canines and premolars were the most effected surface from caries in both sex and all age groups. Also, in examined all caries teeth, molars had the highest caries rates in both sex and all age groups.