Akbari Maryam, Lankarani Kamran Bagheri, Honarvar Behnam, Tabrizi Reza, Mirhadi Hossein, Moosazadeh Mahmood
Health policy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
Department of Endodontic, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Dent Res J (Isfahan). 2016 Sep;13(5):387-395. doi: 10.4103/1735-3327.192269.
The high prevalence of malocclusion is a public health problem in the world and the third priority in oral care. Numerous primary studies have presented reports on the prevalence of malocclusion among Iranian children. In combination, the results of these studies using meta-analysis are highly valuable for health policy-making. Similarly, this study aimed at determining the prevalence of different types of malocclusion among Iranian children.
Using relevant keywords, national and international databases were explored. After narrowing down the search strategy and leaving out the duplicates, the remaining articles were screened based on titles and abstracts. To increase search sensitivity, reference lists of the papers were examined. To identify unpublished articles and documentations, a set of negotiations were done with the people involved and research centers. Finally, the heterogeneity index between the studies was determined using Cochran (Q) and I tests. According to the results of heterogeneity, the random effects model was used to estimate the prevalence of malocclusion in Iran.
In total, 25 articles were included in the meta-analysis process. The prevalence of dental malocclusion was estimated in 28,693 Iranian children aged 3-18 years. The total prevalence of Class I, II, and III malocclusion was 54.6% (46.5-62.7), 24.7% (20.8-28.7), and 6.01% (4-7.1), respectively. The prevalence of Class I, II, and III malocclusion was 44.6% (32.9-56.2), 21.5% (18.01-25.1), and 4.5% (3.2-5.9) in boys and 48.8% (36.8-60.8), 21.5% (16.9-25.1), and 5.5% (3.9-7.1) in girls, respectively.
This study showed a high prevalence of malocclusion among Iranian children. Also, the results indicated that the prevalence is higher in girls.
错牙合畸形的高患病率是一个全球性的公共卫生问题，也是口腔保健中的第三大优先事项。众多的初步研究已就伊朗儿童错牙合畸形的患病率发表了报告。综合来看，这些研究使用荟萃分析得出的结果对于卫生政策制定具有很高的价值。同样，本研究旨在确定伊朗儿童中不同类型错牙合畸形的患病率。
使用相关关键词对国内外数据库进行检索。在缩小搜索策略范围并剔除重复项后，根据标题和摘要对剩余文章进行筛选。为提高搜索敏感性，还检查了论文的参考文献列表。为识别未发表的文章和文献，与相关人员及研究中心进行了一系列沟通。最后，使用Cochran（Q）和I检验确定研究之间的异质性指数。根据异质性结果，采用随机效应模型来估计伊朗错牙合畸形的患病率。
总共有25篇文章纳入了荟萃分析过程。对28,693名3至18岁的伊朗儿童的牙齿错牙合畸形患病率进行了估计。I类、II类和III类错牙合畸形的总患病率分别为54.6%（46.5 - 62.7）、24.7%（20.8 - 28.7）和6. .01%（4 - 7.1）。男孩中I类、II类和III类错牙合畸形的患病率分别为44.6%（32.9 - 56.2）、21.5%（18.01 - 25.1）和4.5%（3.2 - 5.9），女孩中分别为48.8%（36.8 - 60.8）、21.5%（16.9 - 25.1）和5.5%（3.9 - 7.1）。
本研究表明伊朗儿童中错牙合畸形的患病率很高。此外，结果表明女孩中的患病率更高。
