Chen Liang-Wen, Zhao Xiao-E, Yan Qi, Xia Hai-Bin, Sun Quan
Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei Province, China.
Department of Special Care Clinic, Lanzhou Stomatological Hospital, Lanzhou 730000, Gansu Province, China.
World J Clin Cases. 2022 Apr 26;10(12):3907-3915. doi: 10.12998/wjcc.v10.i12.3907.
In atrophic posterior mandibular areas, where the bone height superior to the inferior alveolar nerve (IAN) is less than 6 mm, short implants are not applicable. Conventional alternatives such as IAN transposition and various alveolar bone augmentation approaches are technically demanding and prone to complications.
Computer-guided dynamic navigation implantation improves the accuracy, predictability, and safety of implant placement. This case report presents a dynamic navigation system-guided trans-IAN implant placement technique, which can successfully treat a posterior mandibular dentition defect when the bone height is only 4.5 mm. The implant was inserted into the buccal side of the IAN and was 1.7 mm away from the IAN. The implantation deviations were controlled within a satisfying range, and the long-term restoration outcome was stable.
Dynamic navigation system-guided trans-IAN implant placement might be a recommended technique for patients with extremely insufficient residual bone height and sufficient bone width in the posterior mandibular area.
在下颌后牙区骨萎缩部位,若牙槽嵴顶至下牙槽神经(IAN)的骨高度小于6mm,则不适用于短种植体。诸如IAN移位术及各种牙槽骨增量方法等传统替代方案技术要求高且易引发并发症。
计算机引导动态导航种植术提高了种植体植入的准确性、可预测性及安全性。本病例报告介绍了一种动态导航系统引导下的IAN穿通种植体植入技术,该技术能成功治疗骨高度仅为4.5mm的下颌后牙牙列缺损。种植体植入IAN颊侧,距IAN 1.7mm。植入偏差控制在可接受范围内,长期修复效果稳定。
对于下颌后牙区剩余骨高度极度不足但骨宽度充足的患者,动态导航系统引导下的IAN穿通种植体植入术可能是一种推荐技术。