My gums hurt.

His teeth have strong dentin, making them less prone to cavities.

Toothed whales are a type of marine animal, and as the name suggests, they have teeth.

He is listening to music using Bluetooth.

When he eats an apple, he uses his incisors to bite it off.

He is conducting research on the radula of mollusks.

He likes to take a walk in the park at dusk.

There is a proverb that says 'even a dog wouldn't eat a marital dispute,' so we should not interfere in their problems.

He gritted his teeth to bear the pain.

Rodents are widely distributed around the world.