Department of Paediatric Dentistry, Leeds Dental Institute, Leeds, UK.
Int J Paediatr Dent. 2012 Jul;22(4):250-7. doi: 10.1111/j.1365-263X.2011.01189.x. Epub 2011 Oct 20.
Molar incisor hypomineralisation (MIH) is a condition which has significant implications for patients and service provision.
The aim of this survey was to determine the prevalence of MIH in 12-year olds in Northern England and to consider the relationship with socioeconomic status and background water fluoridation.
Twelve-year-old children were examined for the presence of MIH. 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. A diagnosis of MIH was attributed to a child if they had a demarcated defect in one or more of their first permanent molars.
Of 4795 children that were selected, 3233 (67.4%) were examined. Overall prevalence of MIH was 15.9% (14.5-17.1%). There was an association between prevalence of MIH and deprivation quintiles with a positive correlation in the first 4 quintiles (P < 0.05). There was no difference in prevalence between fluoridated Newcastle and other areas.
Prevalence of MIH is equivalent to other European populations. Prevalence was related to socioeconomic status but not to background water fluoridation.
恒磨牙牙釉质发育不全（MIH）是一种对患者和服务提供有重大影响的病症。
本调查旨在确定英格兰北部 12 岁儿童 MIH 的患病率，并探讨其与社会经济地位和背景水氟化物的关系。
对 12 岁儿童进行 MIH 检查。参与的牙医接受了改良牙釉质发育不全指数的使用培训和校准。在学校，孩子们在牙科反光镜的帮助下直接进行视力检查。如果孩子的一颗或多颗第一恒磨牙有明显的缺损，则被诊断为 MIH。
在选择的 4795 名儿童中，有 3233 名（67.4%）接受了检查。MIH 的总体患病率为 15.9%（14.5-17.1%）。MIH 的患病率与贫困五分位数之间存在关联，前 4 个五分位数呈正相关（P<0.05）。水氟化物处理的纽卡斯尔地区与其他地区的 MIH 患病率无差异。
MIH 的患病率与其他欧洲人群相当。患病率与社会经济地位有关，但与背景水氟化物无关。
