Abstract:

There are various causes for irreversible damage and lack of alveolar bone，including systemic factors and local factors. Therefore，the damage caused by tumors surgery is one of the most common local factors. In order to provide guidance for dentists in the clinics，this paper describes the causes，preventive measures and treatments of damage caused by tumors（KCOT）surgery.

Key words: odontogenic cystic tumor, fenestration, marsupialization, bone regeneration

摘要：

造成牙槽骨不可逆性缺损及缺失的原因包括全身因素及局部因素，而颌骨良性肿物是导致牙槽骨乃至颌骨缺损的常见局部因素。本文就颌骨良性肿物特别是囊肿导致的牙槽骨缺损及缺失原因、如何预防因传统手术造成的牙槽骨及软组织过度或意外损伤以及如何选择正确的手术方法来引导再生牙槽骨及保留并恢复牙齿功能进行叙述，为临床医生实施正确的牙槽外科操作提供参考。

关键词: 下颌骨囊性病变, 开窗术, 袋形术, 骨再生