Biden’s gleaming grin is such a distinctive feature that Trident Gum created JoeBidensTeeth.com in January 2009 as part of a promotion where the company gave away free gum. But since he became vice president, several dentists have speculated that Biden’s smile contains porcelain veneers, crowns, or bridges.

Dr. Lawrence M. Koplin, a plastic surgeon in Beverly Hills, Calif., told the Washington Examiner that, while Biden’s procedures are not perfect, they look very good. He noted that Biden had “a crushing experience with the loss of his son” — Beau Biden died in 2015 after battling brain cancer at age 46 — “and oftentimes we see rapid aging following these events. It is not a stretch to imagine his desire to reach back to ‘freshen’ his appearance and rewind to a time when things were better and happier.”

Cohen said that he didn’t expect Biden to face scrutiny for his procedures because they are now common. “No one cares anymore,” he said.