Rizzuti N, Scotti S
Am J Orthod Dentofacial Orthop. 1997 May;111(5):471-80. doi: 10.1016/s0889-5406(97)70282-8.
A 10.1-year-old boy showed no permanent teeth, with the exception of the lower central incisors. An x-ray examination revealed that eruption of the permanent dentition was obstructed by 1 deciduous supernumerary and 22 permanent supernumeraries ectopically. Treatment consisted of the following steps: (1) extracting all deciduous and supernumerary teeth; (2) waiting for the roots of the permanent teeth to develop and fitting two temporary partial prostheses; (3) assisting eruption of the permanent teeth by removing the bone that covers the remaining teeth and applying crowns to stimulate the eruption; and (4) bringing the permanent teeth into occlusion with orthodontic treatment. The problem of limiting treatment time was made more difficult by the amount of repositioning needed to bring the teeth into occlusion and by delayed root formation. Therefore the orthodontist decided to use extreme caution in applying forces; as a result, treatment time was lengthened. Success was due to good teamwork between the surgeon with an orthodontic background and the orthodontist, who was familiar with surgical procedures.
一名10.1岁男孩除下颌中切牙外未见恒牙。X线检查显示，恒牙萌出受阻于1颗乳牙多生牙和22颗恒牙异位多生牙。治疗包括以下步骤：(1)拔除所有乳牙和多生牙；(2)等待恒牙牙根发育并佩戴两个临时局部义齿；(3)通过去除覆盖剩余牙齿的骨质并佩戴牙冠来刺激萌出，协助恒牙萌出；(4)通过正畸治疗使恒牙建立咬合关系。由于将牙齿调整到咬合位置所需的重新定位量以及牙根形成延迟，限制治疗时间的问题变得更加困难。因此，正畸医生决定在施加力时格外谨慎；结果，治疗时间延长了。成功得益于具有正畸背景的外科医生和熟悉外科手术程序的正畸医生之间的良好团队合作。
