Department of Oral and Maxillofacial Radiology, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
Department of Oral Biomedical Sciences, Division of Oral Diagnosis, Khon Kaen University, Khon Kaen, Thailand.
Odontology. 2024 Jan;112(1):256-263. doi: 10.1007/s10266-023-00824-x. Epub 2023 May 29.
This retrospective study aimed to investigate the prevalence of pre-eruptive intracoronal resorption (PEIR) using cone-beam computed tomography (CBCT) and to explore the mechanism and characteristics of PEIR development. CBCT images of patients aged ≤ 20 years with unerupted teeth at Hiroshima University Hospital were collected. We examined 1530 patients with 10,576 unerupted teeth. Teeth with PEIR were identified for the detailed location and size of the PEIR in the crown using multiplanar reconstruction. The subject and tooth prevalence rates of PEIR were 1.96% and 0.31%, respectively. The teeth that were the most commonly affected by PEIR were mandibular third molars (3.09%). The prevalence of PEIR was significantly higher in females than in males, and higher in the mandible than in the maxilla. No significant difference between in the position of PEIR within the crown was observed. Moreover, CBCT imaging revealed the onset of PEIR in one case. This study demonstrated the prevalence of PEIR and identified statistically significant sex- and location-based differences. Furthermore, one case of CBCT imaging supports the hypothesis that the onset of PEIR was due to resorption after completion of the crown.
本回顾性研究旨在通过锥形束 CT（CBCT）调查未萌出牙的前期牙内吸收（PEIR）的流行情况，并探讨 PEIR 发展的机制和特征。收集广岛大学医院年龄≤20 岁、未萌出牙齿的患者的 CBCT 图像。我们检查了 1530 名患者的 10576 颗未萌出牙齿。使用多平面重建，在 CBCT 图像上确定了具有 PEIR 的牙齿，并对冠部的 PEIR 详细位置和大小进行了检查。PEIR 的患者和牙齿患病率分别为 1.96%和 0.31%。最常受 PEIR 影响的牙齿是下颌第三磨牙（3.09%）。女性的 PEIR 患病率明显高于男性，下颌的患病率高于上颌。在冠内 PEIR 的位置上没有观察到显著差异。此外，CBCT 成像显示了一例 PEIR 的发病情况。本研究表明了 PEIR 的流行情况，并确定了基于性别和位置的统计学显著差异。此外，CBCT 成像的一个病例支持了这样的假设，即 PEIR 的发病是由于牙冠形成完成后的吸收所致。
