Hussain Ghada, Al-Halabi Manal, Kowash Mawlood, Hassan Amar
Pediatric dentist, Dubai Health Authority, at Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, in Dubai, UAE;, Email:
Associate professor and a graduate program director, in the Department of Pediatric Dentistry, at Hamdan Bin Mohammed College of Dental Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, in Dubai, UAE.
J Dent Child (Chic). 2018 Sep 15;85(3):102-107.
The purpose of this study was to evaluate the prevalence and severity of molar incisor hypomineralization (MIH) among schoolchildren in Dubai, UAE. A randomized cluster sample of 342 eight to 12-year-old schoolchildren had their permanent first molars and incisors evaluated for prevalence and severity of MIH using the European Academy of Paediatric Dentistry criteria. The prevalence of MIH in Dubai was found to be 27.2 percent and was significantly higher in girls (32.6%) compared to boys (18.1%;=0.002). The prevalence of molar hypomineralization (MH) was higher than MIH: of the 27.2 percent diagnosed children, 65.6 percent had only MH while 34.4 percent had MIH. MH prevalence in maxillary molars was 20.8 percent, significantly higher than 14.6 percent in mandibular molars (≤0.005). Almost nine percent of maxillary incisors were affected by MIH compared to 0.9 percent of mandibular incisors (≤0.001). The presence of demarcated opacities was significantly higher in females than males ( =0.002). Fifty-three percent of the children with MIH had mild defects, 17 percent had moderate defects, and 30 percent had severe defects. Despite the high prevalence of MIH in schoolchildren in Dubai, the severity was mild. The prevalence of MIH and MH was significantly related to sex and location of tooth in the oral cavity.
本研究的目的是评估阿联酋迪拜学童中磨牙切牙矿化不全（MIH）的患病率和严重程度。对342名8至12岁学童的随机整群样本，使用欧洲儿科牙科学会标准对其恒牙第一磨牙和切牙进行MIH患病率和严重程度评估。结果发现，迪拜MIH的患病率为27.2%，女孩（32.6%）的患病率显著高于男孩（18.1%；P=0.002）。磨牙矿化不全（MH）的患病率高于MIH：在27.2%被诊断的儿童中，65.6%仅有MH，而34.4%有MIH。上颌磨牙的MH患病率为20.8%，显著高于下颌磨牙的14.6%（P≤0.005）。近9%的上颌切牙受MIH影响，而下颌切牙为0.9%（P≤0.001）。界限清晰的釉质混浊在女性中的发生率显著高于男性（P=0.002）。53%的MIH儿童有轻度缺陷，17%有中度缺陷，30%有重度缺陷。尽管迪拜学童中MIH患病率较高，但严重程度较轻。MIH和MH的患病率与性别及口腔内牙齿位置显著相关。
