High point of composite restoration,or cavity touched pulp of tooth causing pain .u can got for painkillers ,or ask ur dentist for high point removal,if not relieved u can go for root canal treatment.

Take ketorol dt 2 tab

It can be due to high points of composite restoration which need occlusal correction Also can be due to caries reaching deep or infection at root of the tooth. Take:- Tab O2 twice daily for 5days after meals Tab Combiflam twice daily for 5days after meals Tab Rablet D once daily for 5days before meals Apply Colgate Pain out gel or clove oil on affected area thrice daily for 5days ☆☆☆If patient is alcoholic or has consumed same within 15 days DO NOT take O2 as it has life threatening reaction instead take Augmentin 625mg ☆☆☆In case of acute severe pain take Tramadol OR Voveran OR 2 tablets of Ketorol DT dispersed in water

It could be due to 2 reasons . 1. If your decay was deep then the composite restoration could be producing pressure on your tooth nerve as it is close to it . You can identify it by the type of pain you are having . If it is severe pain and increases then it could be one of the reasons . Take Tablet Ketorol DT - 2 tablets mixed in half glass of water and get in touch with your dentist. If needed again this tablet can be taken again - 1 tablet mixed in water in an interval of 8 hours you can take , maximum for 3 days and 3 times a day . 2.Secondly it could be due to improper contouring of the filling . A bite correction will need to be done and that will fix the issue . Assuming you got the filling done 4 days back as stated by you , you should go back to your dentist and get it corrected or if it the first case then get an x ray done and if deep you will need a root canal treatment for that tooth .