Problems that often occur with root canal preparation and how to deal with them

With the continuous advancement of dental technology, more and more patients are choosing root canal treatment. However, improper treatment operations or poor patient cooperation often lead to unsatisfactory root canal preparation or even failure. Therefore, how to effectively perform root canal treatment has become a challenge for dentists. When performing root canal preparation, we often encounter problems of one kind or another. What are the common and more serious problems? How can we solve them?

1. Root canal blockage

If the root canal opening is not closed or blocked, it will be difficult to flush out. The root canal opening is not closed: because the patient has dentin allergy or allergy to the root canal filling material, resulting in inability to fill the root canal completely, so it will also lead to root canal opening blockage

Treatment: Try 15#K file or enlarger through the blockage, 10#K file tip 3-4mm bend into 45 degree angle, rotate into along the circumference of the blockage, look for the feeling of jamming, once jammed, use the action of rotating and small amount of lifting towards the root tip to pass the blockage. Once stuck, the blockage is passed by rotating and pulling a small amount towards the root tip.

If the blockage cannot be passed, the blockage should be prepared to the blockage site, and root filling should be done and observed regularly; or the apical part can be plasticized, plasticized plus root filling. If necessary, apical surgery should be performed.

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2. Inadequate root canal fillings

Inadequate root canal filling includes insufficient root canal irrigation fluid and insufficient preparation fluid. There are dead cavities in the root canal, residual debris in incomplete dead cavities, etc. will affect the action of the preparation fluid.

Treatment: Adequate root canal fillings can be filled with dental cement tips, and flap preparation can be performed if necessary. For dead cavities and incomplete canal cavities, dead tissue should be removed as much as possible and the filling and root canal filling should be retained.

3. Pulpal necrosis

The root canal preparation appears to be filled with necrotic tissue in the root, and the pain and periapical pain can be gradually reduced after filling.

Treatment: When root canal preparation fails, tissue blocks can be applied at the tip of the root canal file or root filling with dental adhesive strips. After thorough disinfection treatment of the necrotic pulp, root filling with tissue blocks or the use of root filling agents is then performed. For teeth with incomplete removal of necrotic tissue, an apical splitting procedure can be performed and the apical splitting can be completely removed prior to root canal preparation. The remaining pulpal tissue can be restored and then root canal treatment can be performed to obtain satisfactory results.

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