marginal gingiva

例句：

1. 1. The patient's marginalgingiva was severely inflamed.
   患者的边缘牙龈严重发炎。
2. 2. During theexamination, the dentist noticeda marginal gingiva infection.
   在检查过程中，牙医注意到了边缘牙龈感染。
3. 3. The patient's marginalgingiva had to be surgicallyremoved due to the infection.
   由于感染，患者的边缘牙龈不得不被外科切除。