Non prep veneers are designed to minimise the damage done to teeth by avoiding tooth surface removal. However, a small amount of scratching is inevitable when they are removed.Veneers have a lifespan of 10-20 years so in all likelihood they will need to be replaced at some point.Unlike crowns and traditional veneers, the tooth removal is tiny and won’t really affect the teeth to any great extent. They are used to improve teeth that only need a little tweaking.