The main cause for root canal therapy is an infection, a disease that damages the pulp repaired, or severe trauma experienced by the teeth. If cavities are not timely treated then they can cause damage to the tooth structure. So, root canal therapy is important to avoid infection.

These infections can consequently affect the bone around the teeth and in some cases, the tooth may need to be extracted. Symptoms of root canal therapy are required including significant pain in the tooth when pressure is applied, a high sensitivity to heat, prolonged sensitivity to cold, swelling around the affected teeth, discoloration of teeth and broken teeth.

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In order to diagnose whether root canal treatment is necessary, the dentist will take x-rays and can expose teeth to hot or cold, check the surrounding tissue, and/or applying pressure to the teeth. Finally, if the results are still inconclusive, electric pulp tester may be used.

Root canal therapy must be completed in one visit if there are no complications. Then office visits may be required to check the infection is removed. The whole procedure involves two main steps. The first is a measurement that might involve anesthesia, and possibly sedation.

The dentist removes the top of the pulp through the hole to measure the canal itself. In the second step, the canal was measured through X-rays and/or apex locator electricity.

Next is a very important step of the procedure as a dentist should make sure to remove all diseased pulp tissue from the canal.