In the episode “Busted”, Bloo brushes his teeth after he makes his bed when Mr. Herriman reaching the goal for Bloo (also known as Master Blooregard) to get his teeth cleaned up for the big day at Foster’s and help clean up the Madame Foster statue.
In another episode “Where There’s A Wilt, There’s A Way/Everyone Knows It’s Bendy/Cheese A Go-Go/My So Called Wife”, Wilt cleans Coco’s teeth with a drill so they cannot be stinky ever again at Foster’s dentist’s office./The gang meets Dr. Benjamin DDS at Foster's Home/Mansion./Cheese's desire to go see the dentist makes Mac, Bloo and friends visit him while Eduardo has a toothache.