Why is my root treated tooth grey

When a tooth that has undergone root canal treatment (endodontic therapy) turns grey or discolored, it is typically due to changes that occur within the tooth's structure as a result of the treatment. This discoloration is often associated with the loss of vitality in the tooth and changes in its internal tissues. Here's why root-treated teeth can turn grey and how they can be treated or managed:

Causes of Grey Discoloration in Root-Treated Teeth:

1. Necrotic Pulp Tissue: In a tooth that has had a root canal, the pulp tissue (the innermost part of the tooth containing blood vessels and nerves) is removed during the procedure to treat infection or pain. This removal results in the loss of the tooth's vitality and can cause a change in color over time.

2. Blood Supply Changes: The absence of blood flow to the tooth following root canal treatment can lead to a lack of oxygen and nutrients, resulting in discoloration.

3. Intracanal Medications: Some intracanal medications used during root canal treatment can cause discoloration of the tooth when they interact with tooth structure.

4. Filling Materials: The materials used to fill the root canals, such as gutta-percha, may discolor over time and can show through the tooth, affecting its appearance.

Treatment Options for Grey Discolouration:

1. External Bleaching: In some cases, external bleaching procedures can be used to address grey discolouration. This involves applying a bleaching agent to the external surface of the tooth to lighten the color. This method is typically more effective if the discoloration is superficial.

2. Internal Bleaching: For cases where the discolouration is more pronounced and originates from within the tooth, internal bleaching may be considered. In this procedure, the endodontist or dentist accesses the pulp chamber from the back of the tooth, removes any filling material, and places a bleaching agent inside the tooth. The tooth is then sealed, and the bleaching agent is left in place for a period of time. This process is repeated until the desired color is achieved.

3. Porcelain Veneer or Crown: If external or internal bleaching is not effective or if the tooth's structure is compromised, a porcelain veneer or crown may be recommended to improve the tooth's appearance. A veneer is a thin shell that covers the front surface of the tooth, while a crown encases the entire tooth. Both options can provide a natural appearance and cover the discolouration.

4. Monitor and Maintenance: In some cases, especially when discolouration is minimal and not bothersome to the patient, no treatment may be necessary. Regular monitoring by a dentist or endodontist is important to ensure that the tooth remains healthy.

The choice of treatment will depend on the severity of the discoloration, the patient's preferences, and the tooth's overall condition. It's important to consult with a dentist or endodontist to evaluate the specific situation and determine the most appropriate course of action for addressing grey discoloration in a root-treated tooth.