Dr. Lee Walker uses products for his dental implants that cause serious problems, they migrate, contaminate other teeth, and end up trying to push out next to your gum and cheek area. He does sinus lifts that create sinus problems that will be with you the rest of your life. He pushes the company products of 3i and gives classes on their use. The guy is interested in your money, not in your well being. Be careful. read full review »