@JaneAir - I think I remember the same thing from my last dental visit. I was too nervous to pay very close attention though!
Which actually kind of highlights a point the article made: the importance of discussing premedication with the patient. I'm pretty sure last time I went to the dentist, the dentist didn't really tell me much about what they were doing when they were numbing me. I think I would have been more comfortable if I had a better idea about why they were doing what they were doing.