In the 1990s, football star Brett Favre was also known for having braces, which he put to great effect in this commercial for orthodontia.
When I was a teen in the '80s, braces were still stigmatized. This early '80s cheese commercial shows the tendency to hide newly acquired braces by keeping one's mouth closed and smiling without showing one's teeth.
This 1987 commercial shows the odd combination of fascination and embarrassment with which braces were perceived at that time.
Of course, as shown by this mid '80s commercial, some kids and teens had no problem grinning through their metal mouths. Perhaps it took having a strong sense of individuality to bear one's tin grin without embarrassment.