Abstract：
An insufficient volume of the alveolar bone may prevent implants from being placed in the prosthetically optimal position. Complex restoration of bony structures is required to achieve long-term peri-implant bone stability and represents an adequate prosthetic solution. Background and Objectives: The shell technique has become a widespread and important method for guided bone regeneration in dentistry. Allogeneic bone materials appear to be the most similar substitution for autogenous bone transplants. However, there are few studies using cortical bone allografts in combination with a mix of autogenous and xenograft materials for the augmentation of horizontal ridge defects. This combination offers the advantage of reduced patient morbidity while adding adequate volume and contour to the alveolar ridge. Case report: The present case study aimed to clinically and radiographically evaluate the efficacy of allogenic cortical bone lamina combined with a composite bone graft in the augmentation of a horizontal bone defect in the edentulous maxilla during a 6-year follow-up period. Three CB CT scans taken before treatment, 6 months after the augmentation period/before implant placement, and after a 6-year follow-up period, were analyzed using stable referent points. After the 6 -year follow-up period, the average resorption rate was 21.65% on the augmented buccal side, with no implant exposure being observed. Conclusions: The bone shell technique used in conjunction with allogenic bone plates combined with autogenous bone, xenografts, and collagen membranes is an effective technique to manage horizontal ridge defects.
摘要：
牙槽骨的体积不足可能会阻止植入物被放置在假体最佳位置。骨结构的复杂修复需要实现长期的植入物周围骨稳定性，并且代表了适当的假体解决方案。背景与目的：壳技术已成为牙科引导骨再生的一种重要方法。同种异体骨材料似乎是自体骨移植最相似的替代品。然而,很少有研究使用皮质骨同种异体移植与自体和异种移植材料的混合物来增加水平脊缺损。这种组合提供了降低患者发病率的优点,同时给牙槽脊增加了足够的体积和轮廓。病例报告：本病例研究旨在在6年的随访期内，临床和影像学评估同种异体皮质骨层联合复合骨移植物在无牙上颌骨水平骨缺损增强中的疗效。治疗前进行三次CBCT扫描，增强期后/植入前6个月，经过6年的随访，使用稳定的参照点进行分析。在6年的随访期之后，扩大颊侧的平均吸收率为21.65%，没有观察到植入物暴露。结论:骨壳技术与同种异体骨板联合自体骨,异种移植物,胶原膜是一种有效的技术来管理水平脊的缺陷。
