Hi rach,
I'm responding to this because you said your husband is on Sub. I too am on Sub. Something you said the dentist said is not making sense. Did you speak to the dentist? I have also been for general anesthesia several times while on Sub. It works. They knocked me out several times to do Colon procedures. And I believe that's considered mild or light anesthesia. I also had general anesthesia to have my Gall Bladder removed. It works. I have also been to the dentist and he numbed my entire mouth while he worked on me. I felt nothing. And I was on Sub. The only thing the dentist might give your husband that won't work are pain pills like Vicodin or Percocet. Actually they will work a little, just not much. But if the dentist wants to put him to sleep, that should work. And if the dentist just wants to numb the mouth, that too works. So yes your husband is lying. It is possible that your husband wants to be high so badly that he is trying to use Xanax since he can no longer use narcotics. That's why even when a person is on Sub, they are supposed to be in treatment for addiction with an addiction therapist. Addiction is a mental type of disease. Yes there is a chemical part to it, but there's also a mental issue that has to be addressed in therapy.
I don't know what you should do. If you rat him out to his psychologist, some therapists may throw him out. Others will keep him there because if they throw him out they can't help him. But if he's taking so much Xanax that he's a danger behind the wheel, that has to be addressed. He doesn't need that much Xanax for anxiety. I too take Xanax for occasional anxiety. I take either .5 or 1 mg. Sub actually boosts Xanax, so less is needed.
I guess if nothing else you need to tell your husband he's not being honest with you. And if he's also not being honest with himself, then the doc who's giving him the Xanax needs to know. See what the experts say.