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检测284名35～45岁成年人的牙菌斑,从190名中分离到变链菌,阳性率为66.90%,其中患龋组164名,变链菌阳性率为91.11%;无龋组104名,变链菌阳性率为25.00%。将成年人牙菌斑中分离出的347株变链菌用双向琼脂扩散法进行血清学鉴定,有龋组296珠,占所分离菌株数的85.30%,其中c.e.f血清型菌株数分别为191.35,18;无龋组为51株,占14.70%,其中c.e.f血清型菌株数分别为13、10、7。未定型的有73株,其中有龋组为52株,无龋组为28株。分析变链菌c.e.f血清型与龋病的关系,其比值比(OR)分别为5.32,1.4,1.04。
The bacterial plaque of 284 adults aged 35-45 years were detected. Streptococcus mutans were isolated from 190 of them. The positive rate was 66.90%, including 164 cases of dental caries, the positive rate of Streptococcus mutans was 91.11%. The caries-free group 104 Name, streptococcus positive rate of 25.00%. Streptococcus mutans 347 isolates isolated from adult plaque were serologically identified by two-dimensional agar diffusion method. There were 296 beads in dental caries group, accounting for 85.30% of the isolates, of which cef serotypes were 191.35, 18; caries-free group of 51, accounting for 14.70%, of which cef serotype strains were 13,10,7. There are 73 unconfined strains, of which there are 52 dental caries group, 28 caries-free group. Analysis Streptococcus mutans c.e.f serotypes and caries relationship, the odds ratio (OR) were 5.32,1.4,1.04.