School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Oper Dent. 2013 Jul-Aug;38(4):349-57. doi: 10.2341/12-278-S. Epub 2012 Dec 4.
External cervical resorption (ECR) is a sequela of dentoalveolar trauma that may cause functional, esthetic, and psychologic alterations. The aim of this study was to report a successful multidisciplinary treatment approach performed in a 12-year-old patient who presented with posttraumatic ECR associated with extensive opened cavity, pulp necrosis, and periapical lesion of tooth number 9, with an initial unfavorable prognosis. Crown lengthening was done to enable restoration of vestibular surface with resin composite, forming a barrier that allowed endodontic treatment. Afterwards, a prefabricated fiberglass post was cemented and esthetic restoration was performed using the adhesive technique and direct composite veneer. Reconstructive periodontal surgery was performed to correct irregular gingival contour. After treatment and successive follow-up sessions, it was concluded that although the tooth had been indicated for extraction, low invasive direct techniques were effective to recover function and esthetics and to maintain the tooth in the oral cavity.
牙源性外吸收（ECR）是一种牙牙槽创伤的后遗症，可能导致功能、美观和心理方面的改变。本研究的目的是报告一名 12 岁患者的多学科成功治疗方法，该患者因外伤导致 ECR 伴广泛开放性腔、牙髓坏死和 9 号牙的根尖病变，初始预后不佳。进行了牙冠延长术，以便用树脂复合材料修复颊面，形成一个屏障，允许进行根管治疗。之后，用纤维玻璃预制桩进行固定，并采用粘接技术和直接复合贴面进行美学修复。进行了重建性牙周手术以矫正不规律的牙龈轮廓。经过治疗和连续的随访，虽然该牙被认为需要拔除，但低侵入性直接技术能够有效地恢复功能和美观，并保持牙齿在口腔中。
