Abstract: Owing to their unique anatomical and biological limitations，unfavorable bone defects frequently compromise the long-term efficacy of conventional bone augmentation procedures. In recent years，tent-pole and fence techniques have emerged as effective bone augmentation methods. By constructing stable supporting structures and combining them with bone substitute materials，these approaches can maintain the osteogenic space，promote bone tissue regeneration，and achieve satisfactory bone augmentation. The tent-pole technique utilizes screws to support soft tissue and bone substitutes，forming a＂tent-like＂ scaffold suitable for localized defects，whereas the fence technique relies on the mechanical support of titanium plates combined with barrier membranes to establish a stable three-dimensional osteogenic space，making it more appropriate for complex defects. This review systematically expounds the principles，material design，clinical application，and management of complications associated with these two techniques，with the goal of providing references for the rational selection of bone augmentation strategies in clinical practice.

Key words: unfavorable bone defects, bone augmentation, tent-pole technique, fence technique, space maintenance

摘要： 不利型骨缺损因其特殊的解剖与生物学限制，常导致传统骨增量效果难以维持。帐篷钉技术与栅栏技术是近年来发展的骨增量方法，其通过构建稳定的支撑结构并结合骨替代材料来有效维持成骨空间和促进骨组织再生，从而实现良好的骨增量效果。帐篷钉技术利用螺钉支撑软组织和骨替代材料，形成类似“帐篷”的支撑，适用于局限性骨缺损；栅栏技术依靠钛板的力学支撑与屏障膜的配合，可建立稳定的三维成骨空间，更适合复杂骨缺损。文章系统阐述这2种技术的原理、材料设计、临床应用及并发症处理，以期为临床合理选择骨增量技术提供参考。

关键词: 不利型骨缺损, 骨增量, 帐篷钉技术, 栅栏技术, 空间维持