Department of Orthodontics, Guy's Tower Wing, Great Maze Pond, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, Floor 25, Tower Wing, SE1 9RT, London Bridge, London, UK.
Department of Orthodontics, Rumailah Hospital, Al Khaleej Street, 0097444397030, Doha, Qatar.
Forensic Sci Med Pathol. 2024 Mar;20(1):59-72. doi: 10.1007/s12024-023-00587-5. Epub 2023 Apr 5.
The purpose of this study is to establish and test a reference data set of dental development of Qatari subjects aged between 5 and 25 years. Radiographs of individuals aged between 5 and 25 years were re-used to establish a reference data set (RDS). A scheme comprising 8 tooth development stages (TDS) was used to assess all the teeth on the left side of the maxilla and mandible. The accuracy of dental age estimation (DAE) was tested with a separate sample of radiographs - the validation sample (VS) comprised 50 females and 50 males of known chronological age (CA). Dental panoramic tomographs (DPT) of 1,597 Qataris were assessed. The summary data for the individual TDS comprising the number (n-tds), mean ( -tds), standard deviation (sd-tds), 0th%-ile (the minimum), 25th%-ile, 50th%-ile (the median), 75th%-ile, and 100th%-ile (the maximum) were used to estimate the age of the VS subjects using the simple average method (SAM). There is a significant difference in dental age of 4.8 months in the female group when compared to the CA. The difference in the male group is 4.5 months. This shows similar differences to assessments of other ancestral or ethnic groups.
本研究旨在建立和测试一组卡塔尔人 5 至 25 岁的牙齿发育参考数据集。重新使用年龄在 5 至 25 岁之间的个体的射线照片来建立参考数据集（RDS）。使用包含 8 个牙齿发育阶段（TDS）的方案来评估上颌骨和下颌骨左侧的所有牙齿。使用单独的射线照片样本（验证样本（VS））测试牙齿年龄估计（DAE）的准确性，该样本包括 50 名女性和 50 名男性，其已知的实际年龄（CA）。评估了 1,597 名卡塔尔人的牙科全景断层扫描（DPT）。用于估计 VS 受试者年龄的个体 TDS 的汇总数据包括数量（n-tds）、平均值（-tds）、标准偏差（sd-tds）、0%ile（最小值）、25%ile、50%ile（中位数）、75%ile 和 100%ile（最大值），使用简单平均值法（SAM）。与 CA 相比，女性组的牙齿年龄差异为 4.8 个月。男性组的差异为 4.5 个月。这与对其他祖先或族裔群体的评估显示出相似的差异。
