Veneers are thin, custom-made shells designed to cover the front surface of teeth. They are typically used to improve the appearance of teeth by altering their color, shape, size, or length. Veneers are often sought for teeth that are discolored, worn down, chipped, misaligned, uneven, irregularly shaped, or have gaps between them.

As for their lifespan, veneers can last anywhere from 7 to 15 years, sometimes even longer, depending on how well they are taken care of. Good oral hygiene practices, avoiding habits like biting nails or chewing hard objects, and regular dental check-ups can help extend the life of veneers.