I had emax veneer two times in one year and was v. much unhappy. I re changed the upper one for a third time and was happy but the front 6 teeth are shorter than desired. My dentist suggested to re- change them for longer shape without touching my enamel. My question is; Is this possible to remove the veneer without affecting the enamel as he promised? Pls. advise as they are now not bad but not perfect comparing to the amount I paid but I don't want to take a risk of loosing my teeth. Thank you.