Why does it still hurt after root canal treatment

Among various dental diseases, root canal treatment is a technology that has ideal therapeutic effects on diseases such as periodontitis and pulp disease. However, many friends will find that they still experience pain after root canal treatment. Why is this? In fact, this is because after the operation, the teeth will have some postoperative reactions, and slight pain is normal. However, if the pain persists for a long time, you should be alert to the following reasons.

1. Underfilled root canals

This is the most common reason for root canal treatment failure. When the root canal is underfilled, the apical seal is poor and tissue fluid can penetrate into the root canal, causing bacteria to multiply in the root canal and causing acute or chronic apical periodontitis.

2. Periapical tissue damage

Pain caused by periapical tissue damage is also a common cause. When the root canal is cleaned and enlarged, the chronic inflammation of the root apex is stimulated, causing acute apical periodontitis in the affected tooth.

3. The pulp is not cleaned

If the root canal is not cleaned thoroughly during root canal treatment, there will still be active pulp remaining in the root canal, causing pain due to the combined effects of mechanical damage, drug stimulation and inflammation. The cleaning of the dental pulp needs to be very meticulous, so when you seek treatment at Huzhou Dental Hospital, you must choose a better dental hospital in Huzhou.

4. Missed root canal

The tooth root canal system is very complex, and the root canals of certain teeth often vary. If a root canal is missed during root canal treatment and the root canal treatment is not completed, it may become a lesion and lead to residual pulpitis or apical periodontitis.

5. Poor root canal disinfection effect

Bacterial infection is the main cause of pulpitis and apical periodontitis. If the root canal disinfection effect is poor and a large number of bacteria remain in the root canal, it may lead to failure of root canal treatment.

6. Drug-induced pain

This is related to the nature of the drugs used in root canal treatment and the individual differences of patients. In order to remove the infected substances in the root canal as much as possible, root canal flushing and root canal sealing and disinfection are required during root canal treatment. Some patients will react significantly to the commonly used root canal disinfection drugs in clinical practice and experience pain.

7. Cracked teeth

Some patients choose to fill their teeth after root canal treatment instead of doing brace repair in time. As a result, the teeth split and cause pain after biting hard objects, but at this time the teeth may no longer be able to be saved. For teeth that suffer from pulpitis and apical periodontitis and require root canal treatment, most of the tooth tissue has been destroyed, and the amount of remaining tooth tissue is small. In addition, because the teeth lose the nutrient supply from the pulp, the brittleness of the teeth increases, the fracture resistance decreases, and the teeth are easily split when subjected to chewing pressure. Therefore, wearing braces in time after root canal treatment can greatly reduce the risk of tooth splitting.

There are many reasons for the occurrence or aggravation of pain after root canal treatment, which are mainly related to factors such as the complexity of the tooth root canal system, the limitations of existing root canal treatment instruments and methods, and individual differences among patients. The doctor's careful examination and careful operation during root canal treatment can avoid or reduce pain to a certain extent. Of course, the patient's cooperation during root canal treatment is also very important.