Rip off!!! I spent over 20,000 He ground down most of my teeth,then installed crowns that were supposed to be lined with metal due to,clenching during my sleep,,,I received only a porcelain crown,not what he had described. after a couple months they started to crack,and some just fell out! I contacted his office,they told me they have no obligation and I have no guarantee,,,I've since had to stop my singing/performing,because one cant disgust the patrons with a mouth full of little yellow stumps! I've since not had any kind of social life,,,and keep my disgusting smile to myself,,,,,Im sure he doesn't mind ruining a few people's lives,if it serves him,his nice white smile,and a pocket full of money,,,,im sure ill have to endure many more years of covering my mouth when I smile,,,I dont have any more savings for dental work ,I'm sad,removed from my joy of singing,depressed,and feeling like ugly old man,,,,thank you,,,Dr.Cor,,Upton