I would certainly recommend doing your best to keep your tolerance to the these drugs in check prior to the potential operation. Anesthesia is often a combination of different drugs. When I had my wisdom teeth removed, it started with some kind of drink (forgot to ask, little dixie cup filled with Diazepam (Valium) of some such. 20 minutes later they started hooking up the lines and and getting everything ready.
I had been up all night on Amphetamines jamming with my best friend prior to showing up at the clinic, and I had worried that I would be turned away. I include this, because I know the feeling of showing up to this stuff unsure of where you stand or how things will actually go.
They started the IV, which was a mix of Midazolam (Versed) followed by Fentanyl. It felt pretty great already being in a shitty comedown. They commented that I "needed more than usual", but my surgeon was pretty liberal and just kept going until I couldn't squeeze her hand anymore. Then I felt her slicing, ripping and tearing teeth out from their roots as if it was nothing at all. I was definitely on the verge of awake and not awake.
I included this anecdote here to go with OP, because I want people to not be afraid to pursue medical help, even if they are an addict. This is especially so for people with poor oral health. The mark of your oral health is the mark of your overall health.
They tried that route for me, the only difference being everything was ivd and I was less tolerant to benzos then I am now
but before I blacked out, I remember him distinctly saying “we can’t legally give him anymore” then very shortly after I blacked out and wouldn’t stay still and was wide awake from what I’ve been told
so no oral surgeon is really willing and or wanting to help me, ik I don’t need general anesthesia, but they won’t do it otherwise because of the benzos and my anxiety disorders
I have no fear or anxiety about them doing the procedure with just numbing shots, multiple dentists and oral surgeons have just straight up refused to get involved because they think I’m scared or something and having benzos that aren’t mine in my system is a big no no in the ER plus I’m a former alcoholic
I went to this hospital everyday during my last binge, when I woke up in too much withdrawal and didn’t want to drink. Then that anxiety and withdrawal and then up to 8mg of ivd lorazepam was heavenly, to the point of me literally being more inebriated then I was the night before
so they already see me as a drug seeker, especially with my alcoholism being in their system. Doesn’t matter how long you’ve been sober, as soon as they see that, then you’re forced into using manipulation which worked once last week, 3 separate doses of morphine ivd

but still no prescription, for even tramadol, not that that would do much for my pain anyways, they tried to give me that baby stuff when I had an appendectomy