در دانش آموزان 21 و 51 ساله شهر رفسنجان در سال 7731 Caries free شيوع

Prevalance of Caries free in 12 and 15 Year-old Students of Rafsanjan City in 1998

Background: The aim of this study was to determine the prevalance of Caries Free in 12 and 15 years-old students of Rafsanjan city in 1998 . Materials and Methods: 380 students {266 students were 12 years-old (138 boys and 128 girls ) and 114 students were 15 years-old (56 boys and 58 girls )} were selected by stratified cluster sampling. Students were examined by using sickle explorers and dental mirrors with the method of WHO index. Results: Results show that the prevalance of caries free in 12 year-old students was 38.2 percent (41.3 percent in boys and 35.1 percent in girls ) and in 15 year-old students was 20.6 percent (17.8 percent in boys and 22.4 percent girls ). These percents of caries free are below the aims of WHO in the year 2000 and must be corrected. Conclusion: On the basis of the aims of WHO in the year 2000,this percent of caries free is low and must he incresed .