his/her teeth
Il lui manque la plupart de ses dents.
He’s missing most of his teeth.
Il a coupé la corde avec ses dents.
He cut the rope with his teeth.
Sa bouche saignait, quatre de ses dents étaient tombées pendant la nuit.
Her mouth was bleeding; four of her teeth had fallen out during the night.
— It's Such a Beautiful Day (2012)
À qui vas-tu faire avaler ses dents ?
Whose teeth are you going to make swallow?
— Le Loup de Wall Street (2013)
S'il arrive complètement défoncé, je te jure que je lui ferai avaler ses dents.
If he shows up completely wasted, I swear I'll knock his teeth down his throat.
— Le Loup de Wall Street (2013)