Why is my crown bleeding

Bleeding around a crown usually comes from inflamed gum, trapped plaque, excess cement, or a problem with the tooth or crown margin.

A crown covers the visible part of a prepared tooth, while the gum forms a seal around its edge. A bulky, rough, open, or overhanging margin can retain plaque; decay, a cracked tooth, or infection under the crown can also cause bleeding or tenderness.

Clean the crown margin gently with a soft brush and an appropriate interdental cleaner. Do not force floss through a tight contact or try to remove the crown yourself; note whether bleeding occurs with chewing, brushing, or spontaneously.

Arrange a dental examination when bleeding persists, the crown is loose, chewing hurts, the tooth is sensitive, or there is swelling or a bad taste. The dentist may inspect the margin, remove cement, take radiographs, test the tooth, and repair or replace the restoration when indicated.

Ask whether the crown margin, gum pocket, tooth pulp, or bite is responsible. Ask if the crown can be cleaned or adjusted, whether the tooth needs root-canal treatment, and how its fit will be checked.