A dental crown can protect a damaged tooth, but infection can still develop in the tooth or tissues surrounding it. Common signs include persistent pain, sensitivity, swollen or tender gums, pain when biting, a bad taste, or drainage near the crown. Causes may include decay beneath the crown, a damaged or loose restoration, or an untreated infection inside the tooth. Treatment depends on the cause and may involve a root canal, crown repair or replacement, or extraction in severe cases. Prompt dental care can help prevent the infection from spreading. Read More