I went through major dental two years ago....10 root canals, 4 crowns, root surgery.....I developed this weird syndrome called Dermatographism. If my jaw was touched or rubbed, it swelled. I had to take anti histamines for months, so your swollen jaw is most likely, a reaction to the trauma.
Try Tumeric....it's an anti inflammatory. Also salt water rinses. There's a homeopathic med called Hypericum. It's for pain or minor injuries to the extremities, also Arnica. I recently had a tooth extraction and bone graft because one of my root canals failed. I've been doing all the above.
Good luck!