METAL CROWN In theory, a dental crown made from base metal or gold alloys could last the lifetime of an adult tooth, while all-porcelain and porcelain-fused to metal crowns can last up to 15 years

• Protecting a weak tooth (possibly from decay) from breaking or to keep the weak tooth together if parts of it are cracked.
• Restoring a broken tooth or a severely worn down tooth.
• Covering and supporting a tooth with a large filling and not much tooth remaining.
• Holding a dental bridge in place.
• Covering misshapen or severely discolored teeth.
• Covering a dental implant.
• Covering a tooth that’s been treated with a root canal.