Sullivan A, Borgström M K, Granath L, Nilsson G
Department of Pedodontics, Lund University, School of Dentistry, Malmö, Sweden.
Community Dent Oral Epidemiol. 1996 Jun;24(3):159-63. doi: 10.1111/j.1600-0528.1996.tb00834.x.
For practical reasons the numbers of mutans streptococci (MS) and lactobacilli (LB) in plaque are commonly estimated from saliva samples. The saliva counts are considered to be a reasonable indicator of the entire dentition's total microbial load. However, the value of salivary counts for explaining and predicting caries have been found to be low. There was therefore reason to compare the relationships between caries on the one hand and, on the other, the number of MS or LB in plaque and in saliva, respectively, in order to assess their relative merits for explaining the variation in caries, both in a total material and in subgroups with less favourable oral hygiene. Sixty children aged 14-15 years participated in the study. Caries and plaque were registered and the number of MS and LB was estimated in total plaque and in stimulated saliva samples. The results showed that the number of MS or LB in plaque did not explain the variation in caries to a greater degree than did the salivary counts. For both bacteria the explanatory values increased, as expected, in subgroups with less favourable oral hygiene, but not even at this higher level of explanation was there any difference between plaque and saliva. The LB count was a stronger explanatory variable than the MS count. It was concluded that the number of MS and LB, estimated in total plaque as well as in saliva samples, is not a useful tool in prediction.
出于实际原因，通常从唾液样本中估算牙菌斑中变形链球菌（MS）和乳酸菌（LB）的数量。唾液计数被认为是整个牙列总微生物负荷的合理指标。然而，已发现唾液计数在解释和预测龋齿方面的价值较低。因此，有必要比较一方面龋齿与另一方面牙菌斑和唾液中MS或LB数量之间的关系，以便评估它们在解释龋齿变化方面的相对优点，无论是在总体材料中还是在口腔卫生较差的亚组中。60名14至15岁的儿童参与了这项研究。记录了龋齿和牙菌斑情况，并估算了全口牙菌斑和刺激唾液样本中MS和LB的数量。结果表明，牙菌斑中MS或LB的数量在解释龋齿变化方面并不比唾液计数更有效。正如预期的那样，对于这两种细菌，在口腔卫生较差的亚组中解释值有所增加，但即使在这个更高的解释水平上，牙菌斑和唾液之间也没有差异。LB计数比MS计数是更强的解释变量。得出的结论是，在全口牙菌斑以及唾液样本中估算的MS和LB数量不是预测龋齿的有用工具。
