Is it me or what. These contestants of all ages on game shows, people on interviews all have perfect shaped white teeth. I have good teeth for my age and brush regular, but these people have unusually perfect shaped white teeth.
My grandson has perfectly shaped teeth. Very uneven at one time but he started wearing a brace when he was 15. Removed when he was 17 and his teeth look great. He says it was worth the bit of pain when he started wearing it.
More likely that the sort of people who volunteer as contestants have worked on their looks precisely because they have a trait of being the centre of attention.