Lumineers are less stain resistant than your traditional porcelain veneers. In addition, they have a shorter life span than traditional veneers. Try to stay away from all liquids that have a propensity to stain your teeth. You can brush like you do with natural teeth and be...
Lumineers (or any other type of porcelain veneers) can last a LONG time.
In fact, I have seen people with veneers take better care of their teeth, making their smile and their veneers last longer than if they had never had anything done.
The key to longevity is to clean them very well,...
They must be done correctly! if not, you will be left with a "ledge" of porcelain at the gum line which will trap bacteria and illicit gum disease.