Abstract：
When edentulism is accompanied by an impacted tooth, conventional treatment usually involves traumatic tooth extraction, which would inevitably destroy the surrounding alveolar bone and cause unfavorable esthetics, especially for anterior teeth. Recently, implant placement through the impacted tooth or residual root has been proposed as an alternative to invasive extraction. A particular type of integration has been observed between dentin/cementum and titanium implant, while enamel-implant contact has not been reported. In this article, an implant was placed through the impacted maxillary central incisor, thereby avoiding an invasive extraction surgery. The buccal section of the tooth, including crown enamel, was retained in situ for buccal alveolar ridge preservation. The follow-up results were satisfactory, and a stable enamel-implant contact was observed. Combining with previous similar studies, this technique opens intriguing possibilities and brings fresh insight for the concept of dentointegration. More histological and clinical studies with long-term follow-up are warranted before endorsing this technique in routine application.
摘要：
当缺牙症伴有牙齿撞击时，常规治疗通常包括外伤性拔牙，这将不可避免地破坏周围的牙槽骨并导致不利的美学，尤其是前牙。最近,通过受影响的牙齿或残根的植入物放置已被提议作为侵入性拔除的替代方案。在牙本质/牙骨质和钛植入物之间观察到一种特定类型的整合，而牙釉质-植入物接触尚未报道。在本文中,通过受影响的上颌中切牙放置植入物，从而避免了侵入性的拔除手术。牙齿的颊部，包括牙冠搪瓷,保留在原位用于口腔牙槽脊保存。随访结果令人满意,并观察到稳定的釉质-植入物接触。结合以往的类似研究,这种技术打开了有趣的可能性，并为牙本质整合的概念带来了新的见解。在常规应用中认可该技术之前，需要进行更多的组织学和临床研究以及长期随访。
