3 to 6 Months

Internal bleaching, also known as walking bleach, typically lasts between 3 to 6 months. The duration depends on factors like the severity of the discoloration, the concentration of the bleaching agent used, and individual tooth characteristics. Regular dental checkups and good oral hygiene can help prolong the results.

Understanding Internal Bleaching

Internal bleaching aims to lighten teeth from the inside out. It's usually performed on teeth that have undergone root canal treatment, as the pulp is no longer living and cannot be harmed by the bleaching agent.

How the Process Works

• A small access opening is made in the back of the tooth.
• The pulp chamber is cleaned and filled with a bleaching agent, often sodium perborate.
• A temporary filling seals the opening.
• The bleaching agent is replaced periodically until the desired shade is achieved.

Factors Affecting Duration

1. Severity of Discoloration: More severe staining requires longer treatment.
2. Bleaching Agent Concentration: Higher concentrations may yield faster results but can also increase sensitivity.
3. Tooth Structure: The porosity of the tooth affects how well it absorbs the bleaching agent.
4. Oral Hygiene: Maintaining good oral hygiene helps prevent re-staining.

Comparison of Whitening Options

Maintaining Results

• Regular Dental Checkups: Professional cleanings remove surface stains.
• Good Oral Hygiene: Brush and floss daily.
• Limit Staining Foods & Drinks: Reduce consumption of coffee, tea, and red wine.
• Touch-Up Treatments: Periodic bleaching may be needed to maintain brightness.