After root canal therapy, a lot of patients feel the tooth has no pain, don't think it necessary to make a crown, is a waste of money. Here, the dentist said, it is necessary make a crown after root canal therapy.

      Do you know why the dentist will make a crown for you?

      1. Usually, the teeth need to do a root canal treatment, the scope of the defect is relatively large, the remaining teeth tissue is weak, can not withstand the usual larger chewing. Moreover, after the root canal treatment, the tooth nerve is killed, and is dead with the teeth, lost the nutrition supply, the teeth can not get the supply of calcium from the pulp, the hardness of this kind of teeth will continue to slow down. Just like the trees lose their roots, slowly wither and become very fragile, resulting in increased fragility of the teeth, easy to split.

      2. Root canal therapy by using medical methods to remove the root canal of the residual dirt and bacteria as far as possible. This cleaning and disinfection process, need to get rid of a lot of bacteria infected with the tooth tissue, so after the middle of the tooth is empty. Although the latter will fill the cavity with the filling material, but the filling material is not enough to replace the tooth body organization to carry on the stress.

      3. For the area of tooth defect widely in patients, beautiful degree, also need to be repaired by the crown, to restore its appearance and occlusal function. The teeth are uneven stress and hardness decline will increase the risk of tooth fracture, don't wait the teeth are damaged until know the importance of wearing crowns, the filled cost is much higher than the cost of the crown, so finished the teeth root canal therapy must be crown protected.

• Questions for you to understand the root canal treatment
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