Balleri P, Veltri M, Ferrari M
Department of Odontostomatologic Sciences, University of Siena, Siena, Italy.
Minerva Stomatol. 2010 May;59(5):291-6, 296-8.
A 12 year-old girl presented with an avulsed maxillary central incisor for a trauma occurred two days earlier. The avulsed tooth was endodontically treated and replanted. Regardless of the ankylosis and replacement root resorption the tooth was retained for a very favourable nine-year period after trauma. In addition no severe infraposition occurred. When the extraction was necessary, despite the slight atrophy, as a result of compromised alveolar bone development due to ankylosis, an implant-supported crown was placed as definitive rehabilitation without recourse to bone augmentation procedures. In conclusion, delayed replantation in children will require long-term therapeutic commitment. In favourable cases, tooth with delayed replantation might be retained for a very long time thus avoiding the bone atrophy that would have accompanied early tooth loss and, consequently, reducing grafting requirements when a definitive implant-supported restoration will be required.
一名12岁女孩因两天前发生的外伤导致上颌中切牙脱位。脱位牙经根管治疗后再植。尽管出现了牙根粘连和替代性牙根吸收,但该牙在创伤后保留了非常良好的九年时间。此外,没有发生严重的低位萌出。当需要拔牙时,尽管由于牙根粘连导致牙槽骨发育受损而出现轻微萎缩,但还是放置了种植体支持的牙冠作为最终修复,而无需进行骨增量手术。总之,儿童延迟再植需要长期的治疗投入。在有利的情况下,延迟再植的牙齿可能会保留很长时间,从而避免早期牙齿缺失所伴随的骨萎缩,因此,当需要进行最终的种植体支持修复时,可减少植骨需求。