Hello
Basically, a tooth has three layers. When the cavity extends the innermost layer, it leads to pain and that is when root canal treatment is required. It is a procedure done under local anaesthesia.
Earlier it used to take multiple sittings, but now it has become a single sitting procedure.
It is a very normal dental procedure so you do not have to worry or get scared about it
Next Steps
Just visit an Endodontist that is root canal specialist and get the treatment done. You can get in touch with me. I am an Endodontist practising in Dwarka New Delhi
Health Tips
Don’t over think about it