Royal Teeth Secrets: How Did UK Queen Manage to Keep Her Smile Bright at 95 Without Dentures?

Queen Elizabeth II has been on the throne for 69 years, which makes her the longest-serving monarch in British history. And the fact that the queen's appearance doesn't seem to have changed much over the years has given rise to a stream of memes implying that she has literally existed since before the beginning of time as a constant.