Root canal treatment and root canal filling. Here are some common causes:

1. Tooth decay: When a tooth is severely decayed and reaches the nerve in the root, treatment may require removing the nerve and filling the root.
2. Nerve inflammation: Inflammation of the tooth nerve can occur as a result of decay, fracture, or injury. Nerve inflammation can be painful and requires root canal treatment to remove the nerve, clean the root, and fill it.
3. Tooth fracture: If the tooth is fractured or cracked, there may be irritation to the nerve or bacteria entering the root. In this case, treatment may include root canal treatment and filling the tooth.
4. Caries leakage: Caries leakage may occur under the old filling in a previously treated tooth, leading to inflammation of the tooth nerve. Treatment in this case requires removing the old filling, cleaning the root, and filling it.
5. Erosion: The tooth may be exposed to erosion due to constant friction, problems with biting, or eating a lot of acidic foods. Erosion may cause exposure to the nerve and tooth roots, and treatment may require root canal filling.

Dr. Ayman Al-Ghamrawy Center presents some symptoms that indicate your need for root canal treatment and nerve filling:
1- Toothache: If there is severe or persistent pain in a certain tooth, this may be a sign of a problem with the nerve or gum roots.
The pain may be constant or increase when chewing food or being exposed to heat or cold.
2- Tooth sensitivity: You may feel extreme sensitivity when eating hot, cold, sweet or sour foods.
This sensitivity may indicate nerve damage or gum inflammation in the tooth.
3- Gum swelling: If you notice swelling or redness in the gums surrounding the tooth, this may be a sign of gum inflammation or an infection in the tooth roots.
4- Mouth ulcers: You may feel the appearance of ulcers or sores in the mouth, especially in the area surrounding the affected tooth. These ulcers may be painful and indicate a problem with the nerve.
5- Tooth color change: If you notice a change in the color of the tooth, such as changing to gray or black, this may be a sign of nerve damage or deep tooth decay.
6- Facial swelling: In some serious cases, there may be obvious swelling in the face or jaw due to an infection in the roots of the teeth or molars. You should pay attention to this type of symptom and seek immediate medical attention. If you have any of these symptoms, it is important to see a dentist to evaluate your condition and determine the exact cause and appropriate treatment for tooth roots and nerve filling