Veneers are approximately 1 mm thick, whereas a dental crown is usually around 2 mm. A crown will encase the entire tooth, but a veneer simply covers the front area that people see when you smile.
Crowns will be employed when a tooth has decayed or is broken and needs significant restoration. They are ideal for teeth that perform a lot of work, such as those that accomplish chewing, biting, and grinding. When a crown is applied, the tooth will be reduced, and that tooth will always need a crown going forward.
Veneers, on the other hand, are perfect for healthy teeth that simply need cosmetic improvement because of discoloration or an unattractive shape. They work best for the teeth in the front of the mouth that are more responsible for the look of one’s smile than for performing the work of chewing and grinding. With veneers, tooth reduction is not typically required. Like crowns, however, veneers are permanent and cannot be reversed.