What is the ruling on installing "Lumineers" dental veneers for cosmetic purposes, and what is the ruling if the reason for their installation is tooth discoloration?

It is permissible to install dental veneers for cosmetic purposes if they do not involve filing the teeth, do not cause harm or deception, and if the material is pure and permissible. This is not considered altering Allah's creation because the teeth remain in their original state, and the veneers are a non-permanent, removable addition.