Why has my zirconia crown become gray? (Photo)

The gray discoloration of your zirconia crown is likely caused by an underlying infection or issues with the tooth beneath it, such as a failed root canal or decay. The X-ray suggests a possible infection, which needs prompt treatment to prevent further complications. Recommended steps include root canal retreatment, apicoectomy, or extraction if the tooth is unsalvageable, followed by replacing the crown or bridge. Although there’s no pain now, untreated infections can worsen over time, so seeking immediate care from an experienced dentist or endodontist is crucial.
Dr. Miller Vieira Paula