牙的萌出 2.萌出期: 缩余釉上皮的保护上皮袖引导索 s F 等垂 5∴. 幼儿上腭的乳牙舌侧可见恒牙萌出的引导管 Designed and produced by Dr Wang Li2.萌出期： 缩余釉上皮的保护 上皮袖 引导索 Designed and produced by Dr. Wang Li 5 牙的萌出 幼儿上腭的乳牙舌侧可见恒牙萌出的引导管