Salonen L, Allander L, Bratthall D, Helldén L
Department of Periodontology and Oral Medicine, N. Alvsborg County Hospital, Vänersborg Clinics, Sweden.
J Dent Res. 1990 Aug;69(8):1469-75. doi: 10.1177/00220345900690080401.
The objective of the present study was to describe the distribution of salivary mutans streptococci in a randomly selected adult population and to relate the distribution to the prevalence of caries. The aim was also to study the association between caries and different levels of oral hygiene (OH). The results were based on the assessment of caries, dental plaque, and concentration of salivary mutans streptococci in 914 subjects who represented 95% of an age- and gender-stratified population sample of 967 individuals, randomly selected from the total adult population living in Alvsborg County, Sweden. The results showed that the distribution of mutans streptococci among dentate adults not wearing any kind of removable denture(s) was similar to that previously reported from studies on Swedish schoolchildren, while a comparably higher proportion of subjects with high levels of mutans streptococci was found among the dentate individuals wearing some kind of removable denture(s). Even higher proportions were found among edentulous individuals with complete denture(s). There was a correlation between mutans streptococci concentration in saliva and caries. The subjects with lower concentrations showed a significantly lower mean number of decayed surfaces, compared with the individuals with higher concentrations of mutans streptococci in their saliva. The median OH standard was lower in the older age groups, and there was a higher ratio of decayed surfaces per remaining tooth in those age groups, in comparison with the younger groups. However, for individuals without mutans streptococci, no relation between OH standard and caries could be found and, regardless of OH standard, higher numbers of decayed surfaces were found with an increasing concentration of mutans streptococci in saliva.
本研究的目的是描述在随机选择的成年人群中唾液变形链球菌的分布情况，并将该分布与龋齿患病率相关联。研究目的还包括探讨龋齿与不同口腔卫生（OH）水平之间的关联。研究结果基于对914名受试者的龋齿、牙菌斑和唾液变形链球菌浓度的评估，这些受试者代表了从瑞典阿尔维斯堡县成年总人口中随机抽取的967名按年龄和性别分层的人群样本的95%。结果显示，未佩戴任何可摘义齿的有牙成年人中变形链球菌的分布与先前瑞典学童研究报告的情况相似，而在佩戴某种可摘义齿的有牙个体中，发现变形链球菌水平较高的受试者比例相对更高。在佩戴全口义齿的无牙个体中比例甚至更高。唾液中变形链球菌浓度与龋齿之间存在相关性。与唾液中变形链球菌浓度较高的个体相比，浓度较低的受试者平均龋坏面数显著更低。老年组的OH标准中位数较低，与年轻组相比，这些年龄组中每颗剩余牙齿的龋坏面比例更高。然而，对于没有变形链球菌的个体，未发现OH标准与龋齿之间存在关联，并且无论OH标准如何，随着唾液中变形链球菌浓度的增加，龋坏面数会增多。
