Shegrindsherteethin hersleep.
She was soangrysheendedupgrindingherteethand giving herself asorejaw.
Mydentisthas given me a mouthguard tostopmegrindingmyteethin mysleep.
Thehygienistsaid he'd beengrindinghisteeth.
When yougrindyourteethitwearsdown theenamel.