Balmer R, Toumba K J, Munyombwe T, Godson J, Duggal M S
Department of Child Dental Health, Leeds Dental Institute, Clarendon Way, Leeds, LS2 9LU, UK,
Eur Arch Paediatr Dent. 2015 Jun;16(3):265-9. doi: 10.1007/s40368-014-0171-7. Epub 2015 Apr 18.
To establish the prevalence of incisor hypomineralisation (IH) in a cohort of 12-year-old children in Northern England and to relate the prevalence to gender, socioeconomic status, and the prevalence of molar incisor hypomineralisation (MIH).
The study population comprised 12-year-old children participating in the 2008-2009 National Dental Epidemiological Programme in five regions in Northern England. Participating dentists were trained and calibrated in the use of the modified Developmental Defects of Enamel Index. Children were examined at school under direct vision with the aid of a dental mirror. First permanent molars and incisors were recorded for the presence and type of enamel defects greater than 2 mm. A diagnosis of MIH was ascribed to any child with a demarcated defect in any first permanent molar. A diagnosis of IH was ascribed to any child with a demarcated defect in an incisor but with molar sparing.
3,233 children were examined. The prevalence of IH was 11.0 % (95 % CI 11.0-12.2 %). There was a strong positive correlation between the prevalence of MIH and IH in different regions which reached significance (r = 0.9, p = 0.037) according to Spearman's rho test of correlation. There was a similar pattern of prevalence in the different socioeconomic quintiles although this correlation did not reach significance. The most common teeth affected in IH were the maxillary central incisors, followed by the maxillary lateral incisors and followed by the mandibular incisors. There was no difference in the prevalence of IH by gender.
The prevalence of IH was 11.0 %. The variation of prevalence between regions and socioeconomic groups and the distribution of lesions in the teeth were very similar to observations seen in MIH children from the same cohort.
确定英格兰北部一组12岁儿童中切牙矿化不全（IH）的患病率，并将该患病率与性别、社会经济地位以及第一恒磨牙切牙矿化不全（MIH）的患病率相关联。
研究人群包括参与2008 - 2009年英格兰北部五个地区国家牙科流行病学项目的12岁儿童。参与的牙医接受了使用改良釉质发育缺陷指数的培训和校准。在学校借助牙科镜在直视下对儿童进行检查。记录第一恒磨牙和切牙上大于2毫米的釉质缺陷的存在情况和类型。将任何一颗第一恒磨牙有界限性缺陷的儿童诊断为MIH。将任何一颗切牙有界限性缺陷但磨牙未受累的儿童诊断为IH。
检查了3233名儿童。IH的患病率为11.0%（95%可信区间11.0 - 12.2%）。根据Spearman相关系数检验，不同地区MIH和IH的患病率之间存在强正相关且具有统计学意义（r = 0.9，p = 0.037）。不同社会经济五分位数的患病率模式相似，尽管这种相关性未达到统计学意义。IH中最常受累的牙齿是上颌中切牙，其次是上颌侧切牙，然后是下颌切牙。IH的患病率在性别上无差异。
IH的患病率为11.0%。地区和社会经济群体之间患病率的差异以及牙齿病变的分布与同一队列中MIH儿童的观察结果非常相似。
