| 牙齿 | yá chǐ | tooth; dental; Classifiers: 颗 | |
| 切齿 | qiè chǐ | to gnash one's teeth (in anger) | |
| 咬牙切齿 | yǎo yá qiè chǐ | gnashing one's teeth (idiom); displaying extreme anger; fuming with rage between gritted teeth | |
| 齿轮 | chǐ lún | (machine) gear; pinion (gear wheel) | |
| 口齿 | kǒu chǐ | mouth and teeth; enunciation; to articulate; diction; age (of cattle, horses etc) |
| 1 | My teeth hurt. | |
| 2 | The dentist will scrape away the plaque on your teeth. | |
| 3 | My gums hurt after I had my wisdom teeth removed. | |
| 4 | I went to the dentist today and my teeth are very clean. | |
| 5 | Forgetting to brush teeth can easily lead to bad breath and dental caries. |
