Objective To investigate the current status of periodontal disease in the population at the age of 35-44 and 65-74 years in Guangdong province,thus to provide scientific basis for the establishment of oral health care policies in Guangdong.

• 目的了解广东省35~44岁、65~74岁城乡人群牙周健康的现状,为广东省口腔卫生保健工作提供信息支持。