PURPOSE: To compare the effect of palatal connective tissue graft and acellular dermal matrix (ADM) transplantation to improve the labial contour of implants.

• 摘要目的：比较腭黏膜下结缔组织瓣和异体脱细胞真皮基质(ADM)移植丰满种植区唇侧软组织的效果。