How do celebrities obtain brilliant white smiles always ready for the red carpet or a close-up? Do they avoid coffee? Not likely. Every star-watching magazine is full of pictures of famous people holding Starbucks cups. Do they avoid tobacco? Some probably do, but many actors and fashion models with dazzling white smiles are smokers.
Very few people (famous and non-famous alike) with perfect teeth were born with them. (…Sure, no one is born with teeth, but you know what I mean.) Celebrities have perfect smiles because they have undergone cosmetic dentistry.