Root canal treatment is a common procedure that can help to save your natural tooth. As it is a delicate procedure, there are some potential side effects, although uncommon:
Inflammation of the sinus cavity (subsides within a few weeks)
Recurrence of infection due to erosion of the tooth’s seal or an untreated root canal
Numbness around the affected area
Loss of a tooth caused by weak enamel or severe tooth damage
Abscesses forming at the root caused by leftover infected pulp or ineffective antibiotics
The chances of these situations occurring is generally low. The success of the procedure is dependent on each individual’s condition and medical history and the dentist’s experience.