Das D, Misra J
Department of Pedodontics and Preventive Dentistry, Kalinga Institute of Dental Sciences, Kolkata, West Bengal, India.
J Indian Soc Pedod Prev Dent. 2012 Oct-Dec;30(4):329-32. doi: 10.4103/0970-4388.108932.
Maxillary permanent incisors impaction is not a frequent case in dental practice, but its treatment is challenging because of its importance to facial esthetics. Supernumerary teeth are the main cause of impaction of upper incisors. Supernumerary teeth when present can cause both esthetic and pathologic problems. Early detection of such teeth is most important if complications are to be avoided. In this reported case, the orthopantamogram of a 9-year-old boy revealed two impacted supernumerary teeth in the maxillary anterior region, which was interfering with the eruption of the permanent central incisors. The impacted supernumerary teeth were surgically removed, 11 was repositioned in the arch as it was situated very high in the arch, close to the nasal floor. Twenty-one erupted spontaneously but orthodontic force was applied over 11 to bring it into the occlusion and alignment was achieved with 0.014 mm NiTi wire.
上颌恒切牙阻生在牙科临床实践中并不常见，但其治疗颇具挑战性，因为它对面部美观非常重要。多生牙是上颌切牙阻生的主要原因。多生牙一旦出现，会引发美观和病理问题。若要避免并发症，尽早发现此类牙齿至关重要。在本报告病例中，一名9岁男孩的全景片显示上颌前部区域有两颗阻生多生牙，这妨碍了恒中切牙的萌出。手术拔除了阻生多生牙，11号牙因位于牙弓非常高的位置，靠近鼻底，被重新定位到牙弓中。21号牙自行萌出，但对11号牙施加了正畸力使其进入咬合，并用0.014毫米镍钛丝实现了排齐。
