While Lumineers CAN work, generally speaking they are not what is hoped for. "Lumineers" is a trade name for a brand of porcelain and is not unique. If the teeth are not shaped at all, the Lumineers must be very thin to avoid being "bulky". This thin factor can make them very translucent, so the underlying color will shine through. If you want your result significantly whiter (and most veneer patients do), Lumineers likely will be unsatisfactory.
I would suggest, as Peter has, to seek an experienced cosmetic dentist to see what would work for you. Ask to see pictures of their own cases and come up with a plan that you both find acceptable.





