The magnitude of the periodontal disease problem.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001210:Asia, Southeastern; D001315:Australia; D006301:Health Services Needs and Demand; D006801:Humans; D007564:Japan; D008875:Middle Aged; D009520:New Zealand; D010510:Periodontal Diseases / Q000453:epidemiology* / Q000628:therapy; D013188:Sri Lanka