Prevalence of periodontal disease in young Moroccans: A national survey

Background There are few large surveys of periodontal disease in young age cohorts, and national surveys in Africa do not exist. This study assessed the prevalence and severity of periodontal disease in a national survey of adolescents and young adults in Morocco. Methods A multistage probability sampling design was used to draw a sample of 14,667 students 12–25 years old attending 87 schools. The sample was representative of approximately three million Moroccan students in this age group. Results A total of 27.9%, 11.9%, and 7.7% of the subjects had ≥1 tooth with ≥4, ≥5, and ≥6 mm probing depth, and the population estimates were ≈ 822,436, 349,961, and 226,297 affected subjects, respectively. For attachment loss, the prevalences were: 11.6%, 9.5%, and 6.9% (or ≈ 341,761, 281,043, and 203,977 affected subjects) for ≥4, ≥5, and ≥6 mm, respectively. The rates of probing depth and attachment loss increased significantly with the increase in age (p 0.05). Conclusions Children and young adults attending public schools in Morocco have a high prevalence and severity of periodontal disease compared with other populations of similar age. The rate of periodontal disease reported here may be used as baseline population estimates in the surveillance of disease status in this population.