بررسي شاخص DMFT و وقوع پوسيدگي دو طرفه در دانش آموزان 12 ساله شهر رفسنجان در سال 1386

DMFT Index and Bilateral Dental Caries Occurance among 12-Year-old Students in Rafsanjan-2007

Background and Objectives: Dental caries are the most common chronic childhood disorders andDMFTindex is the most important quantitative criterion for measuring tooth health. The purpose of this study was 10 describe the dental caries prevalence and its bilateral occurrence among 12-year-old students in Rafsanjan in 2007. Malerials and Methods: In this cross-sectional study a total of353 (180 boys and 173 girls) were randomly selected from public and private schools. Pupils were examined clinically for dental caries according to World Health Organization (WHO)criteria. Dental examinations weredone by usingdental mirrors and explorer under artiticiallight in classrooms. Data were collected by interview and clinical examination was performed by one calibrated dentistand wasanalyzed using t-test. Results: The mean DMFT value was 2.46 ± 2 (2.78 boys, 2.13 girls). Decayed (D) component was 75.7%, missing (M) 6.7% and filled IF) 17.6%. There were significant differences in DMFT and their components in relation to gender. The proportion of CF students was 20.7% (16.7% boys, 24.9% girls); and there was no significant difference in relation to gender. The highest prevalance of bilateral caries was in maxillary first and second molars and the lowest prevalance was in maxillary second premolars and mandibular firstpremolars. Conclusion: Caries prevalence among 12-year-old students in Rafsanjan is higher than the global standards of WHO for 20 I0; therefore, improving the existing dental services andperforming prevention programme for students seems to be necessary in the future.