These comprehensive treatment options are usually done when a patient has severely worn down their teeth. Often, treatment includes rebuilding teeth to their original height and shape and fixing the bite. Bite problems often develop from the abnormal wear of teeth. Normal tooth wear can be as little as 1mm (thickness of your fingernails) over the lifetime of your teeth. People who grind their teeth can wear 3 to 5 mm of tooth structure in only few decades of life. The technology to help these people has been one of the great advancements in dentistry.