Lumineers are definitely long term or permanent restorations. They are a brand of porcelain veneers. They do not need to be removed or replaced unless something deteriorates relative to your tooth structure supporting the veneer or the veneer itself. They do not damage your teeth. If you maintain the health of your teeth by daily hygiene and periodic professional cleanings and exams, your veneers/Lumineers can potentially last a life time and never cause any damage to your teeth.
