Umashree N, Kumar Avinash, Nagaraj Tejavathi
Department of Oral Medicine and Maxillofacial Radiology, Al-Badar Dental College and Hospital, Gulbarga, Karnataka, India.
Case Rep Dent. 2013;2013:697671. doi: 10.1155/2013/697671. Epub 2013 Mar 27.
The purpose of this paper is to present the first case of unusual reverse oblique (110 degrees to midsagittal plane) migration of mandibular right canine crossing the jaw midline and piercing the lower border of the mandible at the level of the opposite canine and also to report two more cases of transmigrated mandibular canine and one case of transmigrating mandibular canine. Mandibular canines are "cornerstone" of dental arch; their importance is manifested by their efficiency in masticatory function, stability of dental arch, and aid in maintaining natural facial expression. Early detection of this anomaly can help preserving these canines by orthodontic intervention or by surgical transplantation. This developmental anomaly is properly diagnosed by radiographic evaluation, which is primarily based on the panoramic radiograph. In patients with overretained deciduous canines or missing permanent canines, an intraoral radiograph should be supplemented with panoramic radiograph. This paper discusses the importance of early diagnosis of canine transmigration in treatment planning and reviews the various possible treatment options.
本文旨在呈现首例下颌右尖牙罕见的反向斜行（与矢状面中线呈110度）移位病例，该尖牙越过颌中线并在下颌对侧尖牙水平处穿破下颌下缘，同时报告另外两例已移位的下颌尖牙病例和一例正在移位的下颌尖牙病例。下颌尖牙是牙弓的“基石”；它们的重要性体现在咀嚼功能的效率、牙弓的稳定性以及有助于维持自然面部表情等方面。早期发现这种异常有助于通过正畸干预或手术移植来保留这些尖牙。这种发育异常主要通过影像学评估进行准确诊断，而影像学评估主要基于全景X线片。对于乳牙尖牙滞留或恒牙尖牙缺失的患者，口腔内X线片应辅以全景X线片。本文讨论了尖牙移位早期诊断在治疗计划中的重要性，并回顾了各种可能的治疗方案。
