Even Alicorn princesses aren't immune to plaque and cavities, so they must maintain impeccable dental hygiene. Luckily for the princesses, they have a personal dentist. Their personal dentist is Minuette, one of Twilight's old friends, and since Twilight is a very close friend of Cadance, she asked her friend from Canterlot to be the dental cleaner for her Alicorn friends. In this image, you can see the Princess of Love during her dental checkup. Fortunately, only a little plaque is removed from her teeth, so she can maintain her crystal smile for the entire kingdom. //^w^//