23 year old female presents with a chief concern about her discolored front tooth. Pre-treatment photograph of upper central right incisor ,#8, showing severe discoloration due to a necrotic pulp caused by trauma. Root canal therapy was performed many years. A series of internal bleaching procedures are planned for the patient. Internal bleaching is used to lighten a discolored tooth that has had root canal therapy. It involves placing an oxidizing agent in the coronal portion of the tooth to remove the discoloration
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