What treatment does the "dental emergency pain-relief procedure" involve?

Varies: It depends upon the reason you are in pain. If your tooth is abcessed, the dentist may prescribe antibioics and have you return for an extraction or root canal. If the tooth is fractured, the dentist may place a temporary filling or do a pulpotomy (remove nerve) and have you return for permanent filling or root canal procedure. They will want to take an x-ray of the tooth to determine treatment.

Any treatment: They may involve a whole array of emergency treatment from nerve blockage diagnosis to bite adjustments, oral splints, root canal treatment, extraction, icision and drainage etc. Anything that is required to address the source of oral-facial pain.

Pain relief : This question is very broad and can include a variety of answers, basically to relieve pain the first step is to properly diagnose where the pain is coming from and what is causing the pain.....once that is done then the text steps would be to evaluate if the tooth can be restored to normal form and function....treatment can range from extractions to root canals to filling all depends.....