齿槽炎

例句：

1. 1. He had a toothache that made him unable to eat or drink for days.
   他得了牙痛，好几天都不能吃东西或喝水。
2. 2. After the surgery, he had to wear a mouth guard to prevent further damage to his teeth.
   手术后，他不得不戴一个牙套来防止牙齿进一步受损。
3. 3. The dentist advised him to visit the clinic regularly to maintain good oral hygiene.
   牙医建议他定期去诊所维护良好的口腔卫生。