★★★★★
Success with a jaw infection from a root canal that led to a broken tooth, using infrared heat lamp. It was mentioned somewhere, maybe here, how it breaks through a surface membrane the infection hides behind. I used this one with timer for 15 min session, much improved overnight, gone after the next day. About $60 from Walmart online, worth it considering the alternatives.
Beurer Infrared Light Therapy, IL50 | Heating Lamp, Red Light Heat Device (Portable), Near IR Cold Laser