Al-Tuwirqi Amani, Seow W Kim
J Clin Pediatr Dent. 2017;41(5):374-380. doi: 10.17796/1053-4628-41.5.374.
To compare the prevalence of PEIR in Australian and Saudi Arabian children and to investigate the relationship of PEIR with dental development.
Panoramic (PAN) radiographs of 842 Australian and 456 Saudi children were screened for PEIR. The dental ages of the children with and without PEIR were assessed from the PAN radiographs using the method of Demirjian and co-workers.
The subject prevalence of PEIR was not statistically significant between Australian (2%) and Saudi children (0.6%) (p>0.1). The teeth most commonly affected by PEIR were the mandibular second molars and premolars. Dental impaction was observed in 31% of teeth with PEIR compared to only 0.1% of control teeth (p<0.0001). Children with PEIR showed a mean delay in dental development of 0.54±0.85 years compared with ageand gender-matched controls (p<0.0001).
The present study provides the first evidence that there are no differences in PEIR prevalence between Australian and Saudi populations, and that dental development is significantly delayed in children with PEIR.
比较澳大利亚和沙特阿拉伯儿童中梨状隐窝骨化不全（PEIR）的患病率，并研究PEIR与牙齿发育的关系。
对842名澳大利亚儿童和456名沙特儿童的全景（PAN）X线片进行PEIR筛查。使用德米尔坚及其同事的方法，从PAN X线片评估有和没有PEIR的儿童的牙龄。
澳大利亚儿童（2%）和沙特儿童（0.6%）中PEIR的受试者患病率无统计学差异（p>0.1）。受PEIR影响最常见的牙齿是下颌第二磨牙和前磨牙。与仅0.1%的对照牙齿相比，31%有PEIR的牙齿出现牙阻生（p<0.0001）。与年龄和性别匹配的对照组相比，有PEIR的儿童牙齿发育平均延迟0.54±0.85岁（p<0.0001）。
本研究首次证明，澳大利亚和沙特人群中PEIR患病率没有差异，且有PEIR的儿童牙齿发育明显延迟。
