Why replace outdated restorations?
Wear: Although there are a number of factors that affect the life of a dental restoration, the average silver filing, crown or bridge may last from five to 15 years depending upon the size. The average composite (plastic tooth-colored filling) may only last half as long. Forces constantly exerted on the filings by chewing and grinding cause them to wear down. In some cases the porcelain or gold in crowns actually wears through from constant grinding by the opposing teeth! Leakage: Fillings may start to leak around their edges due to wear and trauma. Often leakage on the biting surface of a crown goes unnoticed by patients. This allows bacteria a ready access to the deeper areas of the tooth. Once the bacteria are inside the tooth or crown, they cannot be removed and decay may begin rapidly again. Worst of all, this damage is often unseen and there may be no symptoms until the decay has reached the nerve (pulp) of the tooth. Recurring decay: Increased exposure to the elements that cause
