兰州市自然人群口腔变形链球菌的分布  

The distribution of oral Mutans Streptococci from the habitants in Lanzhou

作　　者：段彦盛[1] 李艳玲 牛文辉[1] 何祥一[1] 车团结[3] 

机构地区：[1]兰州大学口腔医学院,730000 [2]甘肃省建筑职工医院口腔科 [3]兰州大学生命科学学院

出　　处：《实用口腔医学杂志》2013年第4期525-529,共5页Journal of Practical Stomatology

摘　　要：目的:调查兰州市自然人群口腔唾液中变形链球菌(Mutans Streptococci,MS)的分布情况,为口腔保健以及龋病防治提供基础资料。方法:用含漱法对兰州市城乡常住人口942例取唾液样本,根据有无龋病,年龄,性别,城乡进行分组。采用轻唾选择培养基和Dentocult SM培养法,结合显微镜观察法,对MS进行培养检测,分析不同组别MS检测结果的差异。结果:唾液中MS阳性检出率74.63%(703/942),男性MS阳性检出率80.36%(401/499)高于女性MS阳性检出率67.44%(292/433)(P<0.05);龋病组MS阳性率98.49%(456/463)高于无龋病组51.57%(247/479)(P<0.01);残冠残根组MS的阳性检出率100%(82/82)高于牙釉质龋组,牙本质浅龋组和牙本质深龋组(P<0.05);农村组MS阳性检出率79.37%(350/441)高于城市组71.66%(359/501)(P<0.05);35～44岁年龄组MS阳性率为89.32%(209/234)高于18～34岁组,45～64岁组及65～75岁组(P<0.05)。结论:口腔中MS检出率与龋病的严重程度呈正相关;农村人群,男性以及中年人(35～44岁)的龋病发病率和MS阳性检出率高于其它组。Objective：To investigate the oral Mutans Streptococci（MS） distribution in the habitants in Lanzhou city and to provide basic data for the oral health and dental caries prevention.Methods： Saliva samples of 942 cases were collected by rinsing method from the permanent residents in urban and rural areas of Lanzhou City.The samples were grouped according to caries,age,gender,living location（urban and rural） of the cases.MS were cultured by Murashige Skoog medium（MS）and Dentocult SM,and checked by microscopic observation.The MS-positive rates in various groups were analysed statistically.Results： The MS-positive rate in all samples was 74.63%（703/942） and the MS-positive rate in the males[80.36%（401/499）] was significantly higher than that in the females[67.44%（292/433）].In caries group MS-positive rate was 98.49%（456/463）,in decay-free group 51.56%（247/479）（P〈0.01）.In rural group that was 79.37%（350/441）,while in urban group 71.66%（359/501）（P〈0.05）.In 35-44 year-old group was 89.32%（209/234） and higher than in 18-34,45-64 and 65-75 year-old groups（P〈0.05）.Conclusion： MS-positive rate in oral cavity is closely related to dental caries severity;it is higher in the males than in the females;the incidence of dental caries and MS-positive rate is higher in the rural population,in the male and middle-age groups（35-44 years）.

关 键 词：唾液 龋病 变形链球菌 

分 类 号：R780.2[医药卫生—口腔医学]