Not surprised you were shattered, not just the bg's but I suspect suffering toothache all weekend, you didn't get that much rest..
Level's might have been due to the local Ani, as the dentist use a different one for diabetics that doesn't have any steroids but this is as effective a numbing as the normal one.. So they may have used the normal LA due to being an extraction..
When hubby had a tooth out last year, they use the none steroid version, he checked his BG before in the waiting room, but even before we got home, he had to treat an hypo..
Hope now the tooth is out, all will soon be fine..