At this age you can think of extraction also if opposing tooth is present or you are thinking to replace the opposing missing tooth you can save the tooth by RCT remember once the tooth is extracted its useless if saved it may help you in chewing Hope this will help you

Take a x ray first.check his medical conditions too before planning a treatment. At this age a swelled teeth can be extracted

If you want to save teeth then go for rct.

Sir, the prescription is not clear. If there is no health issues and allergy for medicines, then You can start with moxikind Cv 625 mg twice daily for 3 days ( morning and night after food) Flagyl 400 mg twice daily for 3 days( morning and night after food) , Zerodol SP thrice daily for 1 day ( morning, afternoon and night after food) and pan 40 twice daily for 3 days ( morning and night before food) Avoid hot water gargle and chewing over the area.