I had four crowns and six vanners done by Dr. Siles and most of them fell off. None of them fit properly and there is a noticable gap between my gums and the crowns/vaneers. This gap is referred to as open margins. These open margins cause a great deal of sensitivity. I have to have all of the work redone. Dr. Siles charged me $14,000 and he will not refund me any of the money I paid him. I spoke to him on the phone about this and he yelled at me! I spoke to him in person and he insisits he did a fabulous job on my teeth but I had two dentists review the work he did and they both agree that he did not do my teeth right. DO NOT GO TO HIM