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‘Right to Repair for Your Body’: The Rise of DIY, Pirated Medicine
(www.404media.co)
This is a most excellent place for technology news and articles.
I have no idea. I've got some lidocaine viscous they gave me for the pain. I'm lucky enough to have medical, just not dental. But from experience, it helps temporarily numb the surface pain, but if it's in the root, or if you're pulling the tooth, it does not help.