row of teeth; set of teeth; dentition
娘は歯並びを矯正しています。
My daughter is having her teeth straightened.
彼の歯並びはとても良いと歯科医に言われた。
The dentist told him that his teeth alignment was very good.
昔から歯並びがずっと気になっていた。
I've been self-conscious about my teeth alignment since long ago.