Hölttä P, Alaluusua S, Saarela M, Asikainen S
Department of Pedodontics and Orthodontics, University of Helsinki, Finland.
Scand J Dent Res. 1994 Apr;102(2):113-9. doi: 10.1111/j.1600-0722.1994.tb01165.x.
The isolation frequency and serotype distribution of mutans streptococci and A. actinomycetemcomitans (A.a.) were investigated in a group of Finnish (n = 16) and Vietnamese (n = 16) children, matched by sex, age, and caries status. In the Vietnamese children, the isolation frequencies were higher than in the Finnish children: 100%/62% for mutans streptococci and 78%/13% for A.a. Isolates (n = 3-8) from plaque and saliva were serotyped by immunodiffusion technique using serotype-specific antisera against serotypes c, e, f, d, and g for mutans streptococci and a, b, c, d, and e for A.a. The distribution of mutans streptococci serotypes in Finnish/Vietnamese children was: c 100%/50%; e 10%/31%; d 0%/56%; g 20%/38%. The frequency of plural serotypes was 30%/75%, respectively. In the Vietnamese group the serotype distribution of A.a. was: a 36%, b 27%, and c 63%; 45% of children carried two serotypes. One Finnish child harbored serotype a and one serotype b. The mean percentage of bleeding gingival sites was 7.4 in the Finnish and 15.1 in the Vietnamese group. Calculus and clinically deepened gingival pockets were more frequent findings in the Vietnamese children. The results indicate considerable differences in bacteriologic status and in clinical periodontal status between these Finnish and Vietnamese children.
在一组按性别、年龄和龋齿状况匹配的芬兰儿童（n = 16）和越南儿童（n = 16）中，研究了变形链球菌和伴放线放线杆菌（A.a.）的分离频率及血清型分布。在越南儿童中，变形链球菌和A.a.的分离频率高于芬兰儿童：变形链球菌分别为100%/62%，A.a.为78%/13%。使用针对变形链球菌血清型c、e、f、d和g以及A.a.血清型a、b、c、d和e的血清型特异性抗血清，通过免疫扩散技术对来自菌斑和唾液的分离株（n = 3 - 8）进行血清分型。芬兰/越南儿童中变形链球菌血清型的分布为：c 100%/50%；e 10%/31%；d 0%/56%；g 20%/38%。多种血清型的频率分别为30%/75%。在越南组中，A.a.的血清型分布为：a 36%，b 27%，c 63%；45%的儿童携带两种血清型。一名芬兰儿童携带血清型a，一名携带血清型b。芬兰组牙龈出血部位的平均百分比为7.4，越南组为15.1。越南儿童中牙石和临床牙龈袋加深的情况更为常见。结果表明，这些芬兰和越南儿童在细菌学状况和临床牙周状况方面存在显著差异。
