Simultaneouly, l2 patients received palatal connective tissue transplantation, while 10 patients received ADM graft and all sites were studied for 12 months.

• 其中12例行牙种植术同期腭黏膜下结缔组织瓣移植术，10例行牙种植术同期种植区唇侧骨膜下ADM膜覆盖。