Dr. Sun is the real-life tooth fairy. No hyperbole. Here is my story: Six years ago I moved to LA from Dallas. Past experiences with dentists in my book have been painful and laborious. And so, of course, one week before my move to LA, an old crown cracked - and I didn't want it fixed by my guy in Dallas. And so, on my very first day in Los Angeles, instead of unpacking boxes, I looked for a...