incisor form seamless crown

例句：

1. 1. The dentist made a seamless crown for my tooth.
   牙医为我那颗牙齿做了无缝冠。
2. 2. The seamless crown was so well-fitted that it blended in with the rest of my teeth.
   无缝冠装配得非常完美，与我的牙齿融为一体。
3. 3. The seamless crown protected my tooth from further damage.
   无缝冠保护了我的牙齿不受进一步的伤害。