Dr. Hinkle said I'd need a mouthguard since I grind my teeth in my sleep. They fitted me for a nightguard, & I paid nearly $200 after insurance for it. The nightguard had a wire going across my teeth like a retainer for someone who's finished wearing braces. However, the nightguard had nothing to cover the surfaces of my teeth that were being worn down by grinding. After switching to Dr. Polly Rivas and showing her my nightguard, she said that was a retainer, not a mouthguard, and it wasn't doing much for me. She recommended I purchase The Doctor's Nightguard from a drugstore for $25. I feel cheated by Dr. Hinkle b/c he didn't order me a proper nightguard but got a sizable sum of money from my insurance policy.