'Dental Plumper' Jaw Prosthetic Worn by Marlon Brando in The Godfather, 1972
Marlon Brando did it for the screen test in order to make Vito Corleone “look like a bulldog.” For the filming of the movie, he had a dentist make him a custom mouthpiece to create his sagging jowls. h/t: vintag.es This dental plumper was designed by legendary makeup artist Dick Smith, and
Source: designyoutrust.com