A few things that I thought of, if this helps. I have not had surgery (yet), this is just info. from someone who used to have both a clenching issue (night only) and problems with facial pain. Ideally, you need to know why you are clenching in order to best treat it, but, of course, that is not always possible. I'm under the impression that clenching post-op is not ideal, so you may want to check with Johnson and see what he thinks (also consider getting a scan of your joints, particularly if this continues).
You can usually get physical therapy/physiotherapy covered by insurance, and they can be helpful. Biofeedback can also be useful, and is usually covered by insurance. I would not normally recommend pharmaceuticals, but they can really help (particularly in an acute situation; please don't take them forever). You could request muscle relaxants, benzodiazepines, etc. These can be hugely addictive, so if you have a personal history of addiction (or even a strong family history) you should probably steer clear. Botox is another idea, but if you go that route, I would make sure it's only a one off; there is evidence that it can reduce bone density (I'm only talking about if it's used for this application; if you get it in your forehead (for wrinkles), your bone density will be fine).
I have personally found acupuncture, CranioSacral therapy (it sounds crazy, FYI), and the use of an LED light (In Light Wellness Systems makes a solid product) really helpful. Another thing to keep in mind is that angry muscles usually respond favorably to heat. You could try a heat pack, hot water bottle, or even just run really hot water over a wash cloth and hold it on the spot that is sore.
Being that this is seemingly only a daytime issue this probably wouldn't apply, but if you are still wearing bands at night, any chance they are too tight?
Cheers!
