When a tooth breaks, or if there is severe decay, the remaining healthy tooth area is reduced and this can affect the potential for successful tooth restoration. With crown lengthening, more of the tooth’s surface will be exposed and this will help act as an anchor for future restorative work such as crowns, veneers, or more.
Your gums need at least 2mm of tooth surface area to bond with in order to prevent trapped foods and other potential problems. If part of a tooth is missing or if the decay is too deep, there might not be enough of a crown to work with. In situations like this, crown lengthening is used to recreate the required amount of exposed tooth so that restorative dental procedures will not weaken or fall off.