Department of Dentistry, Oral and Maxillofacial-Plastic and Reconstructive Surgery Faculty of Medicine, Yamagata University, Yamagata, Japan.
Department of Dentistry, Oral and Maxillofacial-Plastic and Reconstructive Surgery Faculty of Medicine, Yamagata University, Yamagata, Japan.
J Stomatol Oral Maxillofac Surg. 2023 Sep;124(4):101427. doi: 10.1016/j.jormas.2023.101427. Epub 2023 Feb 25.
The aim of this study was to evaluate the radiographic characteristics and surgical removal of mesiodens among patients who had attended the Department of Dentistry, Oral and Maxillofacial-Plastic and Reconstructive Surgery of the Faculty of Medicine, Yamagata University. This study included 121 patients in the final analysis. We retrospectively reviewed medical records including patient age, sex, mesiodens number, direction, position, opportunity for detection, surgical approach and operating time. The 121 patients comprised 82 males and 39 females. Mean age was 7.6 ± 3.1 years (range, 4-35 years). The total number of mesiodens among these 121 patients was 147. Ninety-six patients had one mesiodens, 24 patients had two mesiodens and 1 patient had 3 mesiodens. Seventy-nine mesiodens were detected while taking X-rays for routine dental examination and/or orthodontic treatment at their family dental/orthodontic clinic. Mean operating time for removal of the 147 mesiodens was 32.2 ± 18.1 min. Among the 96 patients with one mesiodens, mean operating time for removal of the mesiodens was 30.7 ± 16.5 min. Operating time for removal of a mesiodens tended to be prolonged with increased distance from the alveolar crest. Early detection of mesiodens on routine radiographic check-ups and surgical planning considering patient age, crown direction, position of the mesiodens will contribute to improved treatment of mesiodens.
本研究旨在评估山形大学医学系齿科、口腔颌面整形与重建外科患者的正中多生牙的放射影像学特征和手术拔除情况。本研究最终分析了 121 名患者。我们回顾性地查阅了包括患者年龄、性别、正中多生牙数量、方向、位置、检出机会、手术入路和手术时间在内的病历。这 121 名患者包括 82 名男性和 39 名女性。平均年龄为 7.6±3.1 岁（范围为 4-35 岁）。这 121 名患者的正中多生牙总数为 147 颗。96 名患者有 1 颗正中多生牙，24 名患者有 2 颗正中多生牙，1 名患者有 3 颗正中多生牙。79 颗正中多生牙是在其家庭牙科/正畸诊所进行常规牙科检查和/或正畸治疗时拍摄 X 光片时发现的。147 颗正中多生牙的平均拔除手术时间为 32.2±18.1 分钟。在 96 名有 1 颗正中多生牙的患者中，拔除正中多生牙的平均手术时间为 30.7±16.5 分钟。随着与牙槽嵴距离的增加，拔除正中多生牙的手术时间趋于延长。在常规放射影像学检查中早期发现正中多生牙，并根据患者年龄、牙冠方向、正中多生牙位置进行手术规划，将有助于改善正中多生牙的治疗效果。
