Hello. I have Lumineers and have had them for about 7 years. I feel like they look a little dingy and are not as white as I would like. I have heard that you can whiten the back of your natural teeth and that will help brighten your smile up. Is there any truth to this? Also how long on average do Lumineers last before needing to replace them. And do you recommend veneers over Lumineers in most cases?
Thanks for your help!