上齿

例句：

1. 1. She had her upper teeth fixed after the accident.
   事故后她把上颚牙固定了。
2. 2. The dentist advised us to have our upper teeth cleaned regularly.
   牙医建议我们定期洗上颚牙。
3. 3.The upper teeth are responsible for chewing and grinding food.
   上颚牙负责咀嚼和磨碎食物。