Your wisdom tooth is decayed and it is the reason of pain. Proper treatment is removal of that tooth by a dentist. No benefit of any procedure like rct to save the tooth. It better be removed.
For quick relief start amoxycilli 500mg + clavulonic acid 125 mg combination antibiotic two times a day. Augmentine is one of the brand for this but you can have any. Pain killer zerodol sp will b a better option three times a day and have a multi
vitamin and antacid along with the above two.
Next Steps
visit a dental clinic for removal of that tooth.