Black/ Gray stuff on teeth?

[DougieTheBD]

I recently noticed my beardie had grayish stuff on his teeth. I have no clue what it is, and only now seen it. I havent seen it previously, either. I could only get pictures of it while he was basking as he doesnt like to have his mouth open. It's mainly on his top left teeth and bottom teeth.

( sorry for it being sideways, I dont know why it did that and I'll try to get better pics )

 

[MrSpectrum]

I recently noticed my beardie had grayish stuff on his teeth. I have no clue what it is....

Lizard plaque.