后牙区角化黏膜宽度小于2mm时，角化黏膜移植是必要的吗？

刘瑞敏陈江周勇罗谷声苏恩典吴东

keratinized mucosa; peri-implant diseases; dental plaque; soft tissue augmentation

. 2019, (9): 827 -830 .