Root canal is the space within the root of a tooth.
Root canal treatment is the treatment of choice to repair and save the badly damaged and infected tooth, instead of removing it.
The Symptoms requiring RCT
Severe tooth pain, typically relieved by cold water and increases with the intake of hot liquids.
Pain worsens when you lie down and reduces when you sit up.
Pain stays for a long time after consuming cold things.
Swelling around the tooth.
Constant tooth pain
Pain when chewing.
Tooth pain referred to head and ears as well.
Tooth sensitivity on consuming sweets.
If you have any of the above stated symptoms, it would be advisable that you visit your dentist, since he is the best person to judge whether you have a root canal disease or not, as some of these symptoms may be due to other problems as well.