He heard his teeth grinding together and made himself stop.

She could practically hear Jack's teeth gritting and wasn't certain what to do.

He heard her teeth chattering, but she did not speak a word of complaint.

He could hear someone's teeth chattering, then a murmur of some sort, coming from behind him.

I could hear my teeth in my mouth, crashing against each other.

She wondered if he could hear her teeth grinding together.

I could hear his teeth, grinding upon each other.

And when he said "Royal officers" you could hear his teeth snap together at the end of each word.

He could hear her teeth chattering uncontrollably with the cold.

In the silence I could hear our guide's teeth chattering.