Ingemansson Hultquist Ann, Lingström Peter, Bågesund Mats
Center for Orthodontics and Pediatric Dentistry, Public Dental Service Östergötland, Folktandvården Druvan, SE-601 82 Norrköping, Sweden.
BMC Oral Health. 2014 Dec 3;14:147. doi: 10.1186/1472-6831-14-147.
Mutans streptococci (MS) are closely related to the development of dental caries and are usually established in the oral cavity during early childhood. The aim of the study was to identify factors associated with the presence of MS in Swedish 1-year-olds.
Parents completed a questionnaire on different caries-associated factors and an oral bacterial sample was collected from 1,050 (526 boys, 524 girls) 1-year-olds. Multiple logistic regression analyses were performed to identify risk factors for colonization with MS.
MS were found in 27% of the 1-year-olds with teeth. High or very high MS scores (2-3) were found in 72 (7%) of the children. MS score was correlated to the number of erupted teeth (p < 0.001). No difference due to gender was found. Multiple logistic regression analysis showed that presence of bacteria was associated with: caries in a sibling, other beverages than water between meals, and more than 8 erupted teeth. High or very high MS scores (2-3) were associated with other beverages than water between meals, and more than 8 erupted teeth.
Number of teeth present, diet and family aspects were factors associated with presence of MS in 1-year-olds. To develop high or very high MS scores, the number of erupted teeth and dietary habits are important.
变形链球菌（MS）与龋齿的发生密切相关，通常在儿童早期定殖于口腔。本研究的目的是确定与瑞典1岁儿童中MS存在相关的因素。
父母完成一份关于不同龋齿相关因素的问卷，并从1050名（526名男孩，524名女孩）1岁儿童中采集口腔细菌样本。进行多因素逻辑回归分析以确定MS定殖的危险因素。
在有牙齿的1岁儿童中，27%检测到MS。72名（7%）儿童的MS评分高或非常高（2 - 3）。MS评分与萌出牙齿数量相关（p < 0.001）。未发现性别差异。多因素逻辑回归分析表明，细菌的存在与以下因素相关：兄弟姐妹中有龋齿、两餐之间饮用除水以外的其他饮料、萌出牙齿超过8颗。MS评分高或非常高（2 - 3）与两餐之间饮用除水以外的其他饮料、萌出牙齿超过8颗相关。
牙齿数量、饮食和家庭因素是与1岁儿童中MS存在相关的因素。要获得高或非常高的MS评分，萌出牙齿数量和饮食习惯很重要。
