Big Sean Electric Toothbrush Boasts Backed by Cosmetic Dentist |

Big Sean's leaving a bad taste in some of his fans' mouths for favoring electric toothbrushes -- going so far as to say he doesn't trust folks using regular ones ... but he might have a point.

TEETH TALK

Yes, it does sound a bit elitist, but cosmetic dentist Dr. Trevor Thomas tells TMZ Hip Hop ... the "IDFWU" rapper was actually spitting game.

pearly whites

Dr. Thomas says his stats tell him electric toothbrushes are 30% more effective against germs and plaque -- and a lil bit of flossing can go a long way!!!

He even recommends some of the fancier products on the shelves ... health is wealth and it can begin and end in your mouth. Dr. Thomas says heart disease and even erectile dysfunction can start with oral disease!!!

ALL FIXED

Sean Don has his own dentist but Dr. Thomas has famously repaired the Migos, Chief Keef, Chrisean and Michael Blackson, in addition to tackling completely destroyed mugs.

Nobody likes a know-it-all but Sean can tell all the haters 'told ya so this time!!!