By looking at the age of the teeth, you can tell the lifespan of an elephant.

He is making an effort to polish his manhood every day to improve himself.

I brush my teeth every day using a dentifrice.

He is using that coat from winter to spring.

You need to use your head to solve this problem.

He is brushing his upper teeth.

He is brushing his lower teeth.

He smiled, showing his lower teeth.

In the Edo period, women blackened their teeth as a symbol of beauty.

If you don't brush your teeth every day, dental plaque can accumulate and potentially cause cavities.