YA/ Middle Grade about town where everyone has to get fillings but one boy skirts the rule by putting tin foil in his mouth. Then he sees what's really going on. Read 2005-2007.

[Megan]

Read in 2005 - 2007ish. It was a chapter book, there might have been a few illustrations.

There's a guy or maybe an organization that tells everyone in the town they have to get checked for metal fillings in their mouth and if they don't have them, they have to get one put in. The boy puts tin foil in his mouth and then doesn't have to get the fillings.

I think the boy's family owns an auto shop.

It turns out the fillings were keeping the townspeople from seeing or hearing what was really going on. I don't remember if it was extraterrestrial or if it was a government thing.
They realize the boy can see what's happening and they decide to tell him about it.

[Megan]

Bump

[Arden]

I think they made this into a Netflix show