The tooth that supports the veneer may have cavities, even if the veneer itself is intact and strong. Over time, however, the veneer can start to separate from the tooth, allowing food debris to get stuck in between. This can lead to tooth decay and other problems. Veneers don't last forever, and on average they need to be replaced after about 20 years.
Poor-quality veneers may need to be replaced sooner. If you don't replace your veneers when the time comes, they can start to crack, chip, and wear out. Unprepared veneers can last 5 to 7 years or longer if you take good care of them. Fortunately, dental veneers can be removed and replaced.
The procedure is similar to the placement of new veneers and usually requires two visits to complete. Porcelain veneers are designed to be durable dental restorations, but they are not permanent. Clinical studies have shown that 95% of porcelain veneers last 11 years or more. If you want your porcelain veneers to last as long as possible, it's important to take good care of them.
This includes brushing and flossing regularly, avoiding hard foods and drinks, and visiting your dentist for regular checkups.