Department of Conservative Dentistry and Endodontics, Sri Ramachandra University, Tamilnadu, India.
J Endod. 2011 May;37(5):706-10. doi: 10.1016/j.joen.2011.02.005. Epub 2011 Mar 21.
Invasive cervical resorption (ICR) may occur as a consequence of trauma, orthodontic treatment, intracoronal bleaching, and surgical procedures and may lead to the progressive and destructive loss of tooth structure. The restoration of these resorptive defects is a challenging task because no single restorative material possesses good sealing ability, reinforcement of remaining tooth structure, and biocompatibility simultaneously.
This case presented with invasive cervical resorption class 2 (Heithersay) and apical inflammatory resorption caused by trauma in tooth #9. The surgical management of ICR was performed, and, finally, the roots were externally reinforced by filling the resorptive defect with a combination of composite and resin-modified glass ionomer cement, proposed as reverse sandwich restoration (RSR).
This novel RSR was well tolerated by the periodontal tissues. A follow-up x-ray showed no pathological changes and no recurrence of resorption.
This case report presents a treatment strategy for root reinforcement that might improve the healing outcomes for patients with invasive cervical resorption.
侵袭性根吸收（ICR）可能是由于创伤、正畸治疗、牙内漂白和手术引起的，并可能导致牙齿结构的渐进性和破坏性丧失。这些吸收性缺陷的修复是一项具有挑战性的任务，因为没有任何单一的修复材料同时具有良好的密封能力、对剩余牙体结构的增强和生物相容性。
本病例表现为 9 号牙因外伤引起的侵袭性颈缘吸收 2 类（Heithersay 分类）和根尖炎性吸收。对 ICR 进行了手术治疗，最终通过复合树脂和树脂改性玻璃离子体水泥的组合填充吸收缺陷，对根进行了外部强化，提出了反向三明治修复（RSR）。
这种新型 RSR 被牙周组织很好地耐受。随访 X 光片显示无病理改变，无吸收复发。
本病例报告介绍了一种根强化治疗策略，可能改善侵袭性颈缘吸收患者的愈合效果。
