I think the heat has gotten to me. I went to my dentist appointment yesterday feeling pretty icky but attributing it to white coat fever. Problem is, when I left the dentist I still felt icky. Clearly it was more than just nerves.
Now, the appointment: it appears that my tooth cracked a while back, schmutz got into the crack, caused a cavity, and weakened the tooth, which is why it broke last week. The dentist says the decay is deep enough that I may need a root canal, but since it doesn’t hurt it’s iffy. They are so busy I can’t get the work done until the end of next week.