A missing tooth or slightly misaligned teeth should not be too severely penalized.

缺 齿 和牙齿略不整齐都不是严重缺陷。

youdao

He's got a front tooth missing.

他有一颗门牙掉了。

《牛津词典》

Appearing with a missing front tooth, he told of beatings, whippings and electric shocks after his arrest.

少了一颗门牙的扎伊迪声称在被捕后遭暴打，鞭刑以及电击。

youdao

Al-Zaidi, who faced the cameras wrapped in an Iraqi flag, was missing a tooth, but otherwise appeared in good health.

VOA: standard.2009.09.15

When she and Marjorie arrived home from church one Sunday to find the space where the stereo had sat looking as vacant as a missing tooth, Candy had felt a rush of elation.

NEWYORKER: The Visitor