The absence of oral maxillofacial region is the common clinical problem.There are so many questions to restitute the absence in tradional ways and the effect is not satisfied.

• 口腔颌面部缺损是临床常见问题,采用传统的方法进行整复存在诸多问题,效果不尽如人意,科学家逐渐将目光转向异体组织移植。