牙周病是一种常见病和多发病，ＷＨＯ已将牙周组织的健康状况列为人类健康的十项标准之一［１］，我国成年人牙周病检出率在７５％以上［１］。本公司是从事海上石油、天然气勘探和开发的生产单位，因其工作的特殊性，导致作业人员工作、生活环境和饮食习惯［２］与普通人... Periodontal disease is a common disease and frequently-occurring disease. WHO has listed the health status of periodontal tissue as one of the ten criteria for human health [1]. The detection rate of periodontal disease in adults in China is above 75% [1 ]. The company is engaged in offshore oil and gas exploration and development of production units, because of the special nature of their work, leading to work personnel, living environment and eating habits [2] and ordinary people ...