the crown of a tooth

• 牙冠

the crown of a tooth的用法和样例：

例句

1. The endodontist makes an opening in the crown of the tooth.
   医生在牙冠上做一个开口。
2. Sonicare's fluid cleaning action helps to remove plaque at the gum line where the crown and tooth meet.
   飞利浦的流动洁力功能可以除去牙冠与牙齿相间部分的牙龈线的牙菌斑。