Mittal N P, Goyal A, Gauba K, Kapur A
Department of Pedodontics and Preventive Dentistry, Santosh Dental College and Hospital, No. 1, Santosh Nagar, Ghaziabad, 201009, Uttar Pradesh, India,
Eur Arch Paediatr Dent. 2014 Feb;15(1):11-8. doi: 10.1007/s40368-013-0045-4. Epub 2013 Jun 11.
There is rarity of prevalence data on molar incisor hypomineralisation (MIH) for the Indian population and the majority of data originated from European countries.
To report on prevalence and defect characteristics of MIH for school children of the northern Indian region.
A cross-sectional survey including 1,792, 6-9-year-old school children of Chandigarh, India was carried out using European Academy of Paediatric Dentistry (EAPD) 2003 criteria for diagnosis of MIH. In addition to descriptive analysis for distribution of various defects, comparative data analysis was carried out for inter-comparison of distribution and type of defect amongst two phenotypes, MH [first permanent molar (FPMs) involvement] and M + IH (simultaneous involvement of molars and incisors). Similar comparative analysis was performed for four subgroups on the basis of number of affected surfaces/subjects.
A prevalence of 6.31% was reported. FPMs (2.83 ± 0.874/subject) were more commonly affected than permanent incisors (1.19 ± 1.614/subjects). White/creamy opacity without post-eruptive breakdown (PEB) was the most common lesion, seen in 85% of subjects. MH phenotype was seen in 44% of subjects and 56% exhibited M + IH phenotype. A trend toward greater severity was seen in M + IH phenotype when compared to MH phenotype. A greater number of surfaces presented with white/creamy opacities without PEB (p < 0.05). With an increase in the number of surfaces involved the severity of MIH also increased with more frequent presence of brown defects with PEB.
With concomitant involvement of incisors, more severe presentation of MIH was seen. Also, with increase in number of affected surfaces a parallel increase in severity as well as extent of lesions was observed.
关于印度人群磨牙切牙矿化不全（MIH）的患病率数据较为罕见，且大多数数据来自欧洲国家。
报告印度北部地区学龄儿童MIH的患病率及缺损特征。
采用欧洲儿童牙科学会（EAPD）2003年MIH诊断标准，对印度昌迪加尔市1792名6至9岁学龄儿童进行横断面调查。除了对各种缺损分布进行描述性分析外，还进行了比较数据分析，以比较两种表型（MH，即第一恒磨牙受累；M + IH，即磨牙和切牙同时受累）之间缺损的分布和类型。根据受影响的表面/受试者数量，对四个亚组进行了类似的比较分析。
报告的患病率为6.31%。第一恒磨牙（平均每位受试者2.83 ± 0.874颗）比恒切牙（平均每位受试者1.19 ± 1.614颗）更常受累。无萌出后崩解（PEB）的白色/乳色不透明是最常见的病变，见于85% 的受试者。44% 的受试者表现为MH表型，56% 表现为M + IH表型。与MH表型相比，M + IH表型有更严重的趋势。更多的表面出现无PEB的白色/乳色不透明（p < 0.05）。随着受累表面数量的增加，MIH的严重程度也增加，出现棕色PEB缺损的频率更高。
切牙同时受累时，MIH表现更为严重。此外，随着受影响表面数量的增加，病变的严重程度和范围也随之增加。
