Gargling with water and one or two drops of oregano essential oil (watch out it can be burn, so start slow) helped me lots after dental surgery.
Before surgery, I took some magnesium so my jaw would not be too painful after keep it soo wide open so long. Also Arnica Montana D6 (or D12?).
Most imp. for me: During surgery repeating a mantra helped me get my mind off the actual fact.
Had no infections after... thank GOD!