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Root canals, also known as Endodontic therapy, are needed when the nerve of the tooth becomes infected and inflamed due to dental decay, a cracked or broken tooth or an injury to the tooth. The canals are cleaned, nerve tissue and pulp are removed to ensure all the bacteria have been cleared.
Although root canal treatment saves your natural tooth, prevents tooth extraction, and eliminates the cost of tooth replacements such as implants or bridges,the procedure itself can further weaken the tooth. Even with filling material, teeth with large cavities are still weak, and may need additional strengthening with a crown.
Dr. Sarna may recommend a crown to be placed in most cases as there will be a high risk of fracture and it is the best option to extend the life of the tooth.