Cerrahpasa Faculty of Medicine, Forensic Medicine Department, University of Istanbul, Istanbul, 34303, Turkey.
Int J Legal Med. 2012 Nov;126(6):933-42. doi: 10.1007/s00414-012-0773-8. Epub 2012 Sep 26.
Radiographic evaluation of mineralization and eruption stages of third molars using dental panoramic radiographies can be an efficient tool for chronological age estimation in both forensic sciences and legal medicine. The third molar tooth is utilized for dental age estimation about the age span of 15-23 years because it represents the only tooth still in development. The aim of this study is to obtain and analyze data regarding third molar development and eruption in Turkish population for dental age estimation. A total of 744 dental panoramic radiographies of 394 female and 350 male subjects aged between 8 and 22 years were examined. Third molar development was determined according to the Nolla classification system, and eruption was assessed relative to the alveolar bone level. Mandibular and maxillary third molars were generally found at similar stages of development on both sides. Nolla stage 6 (completed crown calcification) was reached at around the age of 15 in both maxillary and mandibular third molars in both sexes. Alveolar emergence was at around the age of 16 in males and around age of 17 in females. Although third molars' eruption shows greater variability than development of third molars, data which were obtained from this study about eruption of these teeth can be supportive to development data for age estimation.
使用口腔全景 X 光片评估第三磨牙的矿化和萌出阶段，是法医学和法医领域进行年龄推断的一种有效工具。第三磨牙在 15 至 23 岁的年龄范围内，可用于牙龄估计，因为它是唯一仍在发育的牙齿。本研究旨在获取并分析土耳其人群的第三磨牙发育和萌出数据，以用于牙龄估计。共检查了 744 名 8 至 22 岁的 394 名女性和 350 名男性的口腔全景 X 光片。第三磨牙的发育情况根据 Nolla 分类系统确定，萌出情况相对于牙槽骨水平进行评估。在男性和女性中，下颌和上颌第三磨牙的同侧通常处于相似的发育阶段。在男性中，大约在 16 岁时达到 Nolla 第 6 期（完全冠钙化），在女性中大约在 17 岁时达到 Nolla 第 6 期。虽然第三磨牙的萌出比第三磨牙的发育具有更大的变异性，但本研究中获得的关于这些牙齿萌出的数据可以为牙龄估计的发育数据提供支持。
