The whole process of dental root canal treatment is completed in about 1~3 times, which is divided into root canal preparation, root canal disinfection and root canal filling. Dental root canal treatment is a common treatment for endodontitis and periapical inflammation, and the whole process is generally divided into 3 steps: 1. Root Canal Preparation: The root canal is cleaned of infected pulp and bacteria on the wall of the root canal, and the root canal is prepared and shaped. 2. Root canal disinfection: medication is placed inside the root canal to reduce inflammation. 3. Root Canal Filling: sealing the root canal with dental adhesive to isolate the root canal from outside bacteria. Generally, this is done in 2-3 sessions. For endodontitis that does not involve the root tip, all the steps can be done in one session. For teeth with more oozing from the root canal, i.e. more inflammation, the whole process of root canal treatment is at least 3 times, depending on the inflammation in the root. So, the full procedure of root canal treatment is about 1 to 3 times, depending on the control of inflammation within the root of the tooth. You can visit your dentist.