Risk vs. price of a better smile : Orthodontists warn of dangers in start-ups' mail-in services for straightening teeth.
It's easier than ever to get straighter teeth. Orthodontists think that's a big problem.
Where metal braces installed in a doctor's office were once the only way to correct misaligned teeth, a new method that uses removable clear aligners can eliminate a visit to an orthodontist and save patients thousands of dollars. That's what led Deniece Hudson, who always dreamed of having straighter teeth, to a start-up called SmileDirectClub.
Hudson, a 24-year-old Georgia Southern University g...