Mutans streptococci, lactobacilli and caries prevalence in 11- and 12-year-old Icelandic children.
Mutans streptococci, lactobacilli and caries prevalence in 11- and 12-year-old Icelandic children.
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11 岁和 12 岁冰岛儿童的变形链球菌、乳酸杆菌和龋齿患病率。
DOI：
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发表时间：
1987
影响因子：
2.3
通讯作者：
S. Bjarnason
中科院分区：
文献类型：
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作者：
B. Köhler;S. Bjarnason
由于冰岛的龋齿患病率没有像其他欧洲国家那样下降，因此研究冰岛儿童中致龋细菌的存在是有意义的。唾液变形链球菌和乳酸杆菌的患病率进行了检查，在217个11岁和12岁的冰岛儿童，并与他们的龋齿患病率。在2%的儿童中未发现变形链球菌，而11岁和12岁儿童中分别有31%和35%的唾液中携带超过10（6）CFU/ml。在8%的儿童中未检测到乳酸杆菌，而28%的11岁儿童和23%的12岁儿童每毫升唾液中有超过10（5）CFU。平均患龋率（DFS），包括初始龋，为11岁和12岁的21.6和28.8。变形链球菌和乳酸杆菌均与龋病患病率显著相关。这些微生物的数量增加，特别是变形链球菌，与DFS增加有关。唾液中变形链球菌和乳酸杆菌数量高的儿童DFS比数量低的儿童高4倍。唾液致龋细菌的数量以及龋齿患病率与10年前瑞典的情况相似。S.所有变形链球菌阳性儿童均携带变形链球菌（血清型c/e/f）。S.远缘链球菌（D/G型）60例，占30.2%。两个S的孩子。和S. sobrinus有显着较高的唾液中的变形链球菌和乳酸杆菌计数以及龋齿患病率比只有S。变异体
Since the caries prevalence has not declined in Iceland as it has in other European countries, it was of interest to study the presence of cariogenic bacteria in Icelandic children. The prevalence of salivary mutans streptococci and lactobacilli was examined in 217 11- and 12-yr-old Icelandic children and was related to their caries prevalence. In 2% of the children mutans streptococci were not found whereas 31% and 35% of the 11-yr-olds and 12-yr-olds respectively carried more than 10(6) CFU per ml saliva. Lactobacilli were not detected in 8% of the children whereas 28% of the 11-yr-olds and 23% of the 12-yr-olds had more than 10(5) CFU per ml saliva. The mean caries prevalence (DFS), initial caries included, for 11-yr-olds was 21.6 and for 12-yr-olds 28.8. Both mutans streptococci and lactobacilli were significantly correlated to each other as well as to caries prevalence. An increased number of these microorganisms, especially the mutans streptococci, were associated with an increased DFS. Children with high salivary counts of mutans streptococci and lactobacilli showed four times higher DFS than children with low numbers. The magnitude of salivary cariogenic bacteria as well as caries prevalence was found to resemble the situation in Sweden 10 yr ago. S. mutans (serotype c/e/f) was carried by all mutans streptococci positive children. S. sobrinus (serotype d/g) was found in 60 children (30.2%). Children with both S. mutans and S. sobrinus had significantly higher salivary counts of mutans streptococci and lactobacilli as well as caries prevalence than children with only S. mutans.