RESUMEN
Objective@#The aim of this study is to investigate the periodontal status of senior high school students in Dongcheng District, Beijing. @*Methods @#750 Beijing senior high school students were recruited in this study. The periodontal examination assessed the calculus, bleeding on probing, probing depth, and clinical attachment loss. The prevalences of gingivitis and periodontitis were assessed. @*Results @#A total of 73.5% of the subjects had gingivitis, the prevalences of gingivitis in male and female were 76.7% and 69.2% respectively. The prevalence of periodontitis was 10.9% in total, with 11.8% in male and 9.8% in female respectively.@*Conclusion @#The prevalence of gingivitis was high in senior high school students, and significantly higher in male. The prevalence of periodontitis was relatively low, and there was no difference in gender.