Evaluation oral hygiene index in the 12-years-old students

Background: Periodontal disease and dental caries are one of the most important factors of tooth loss and the most common oral health problem, therefore the present study was performed to assess oral hygiene index in the 12-years-old students in Zahedan city.Material and Method: In this descriptive-analytical study, Zahedan city (2009) was divided based on socio-economical situation in to two areas and 10 school (boys & girls school) from each area, and 47 students from each school, were selected randomly. Oral hygiene status of 942 12-years-old male and female students was assessed with OHI-S index. Data were analyzed by SPSS software version-15 (t-test and chi-square). Results: The mean OHI-S was 1.43±0.72 and 44.7% persons had well OHI-S, 50.3% had medium OHI-S and 5% had poor OHI-S. The mean OHI-S was 1.42 in boys and 1.44 in girls. Correlation between OHI-S with father occupation (p=0.03) and sequences of tooth brushing (p=0.001) was significant. Conclusion: Oral hygiene status of studied students was in the middle and people who brushes their teeth more time, had higher OHI-S indices