The longevity of your veneers depends on how well you take care of them, but most patients can maintain the quality and function of their veneers for up to 20 years. Your veneers will wear down over time, so you may need to repair or replace individual veneers.Brushing and flossing your teeth with care is the best way to prolong the lifespan of your veneers. Be sure to see your dentist every six months for a teeth cleaning and oral exam. Avoid doing things that could damage or dislodge your veneers, such as chewing hard foods with your front teeth, or using your teeth to open items.