Re: Tooth troubles.
I do not recommend this unless you are really, really, REALLY hurting for cash because it's a super pain in the ass that will take up large amounts of time, but.
If you live near a university with a solid dental program, consider going there. At one point during the height of the recession, when @insomniac7809 and I had one income and no insurance of any kind, I had the sort of tooth pain that I was afraid meant I was going to need a root canal. I went to UPenn's dental school as they have a low cost clinic with additional support for those in financial need. Getting X-rays, a cleaning, and an exam in the specialty clinic took me FIVE HOURS. It also cost me $29, and that includes the sealant they put on the ouchy tooth. (Turns out I have a receding gumline on one side and it exposes the nerve to potential stabbing pain if I eat something really hot.)
If I'd needed a root canal and hadn't qualified for the financial assistance, my bill would've been $800-$1200 depending on the complexity, compared to the average cost of $2500-$3000.
And no, they don't just let inexperienced grad students loose on your teeth. The reason the appointments take so long is because the students do even basic work under intense supervision and then their instructors come in at each step inspecting, correcting, and improving anything they're doing to ensure it's been treated properly.
It means clearing your day and having an excruciating amount of patience, but it's better than basically bankrupting yourself or going untreated.
ETA: @surreality -- I'm sure you're totally on top of this shit and have someone you're comfortable with, but I also know you were panicking about the cost of what you needed and don't live all that far from me. If you want me to pull the info for you, LMK. I'm pretty sure you said something about blocking all PMs, or I'd just send you the link.