Free tips for dentists:
Please don't talk about problems you are having with getting your BMW from the dealer while doing dental work on your patients. I don't think patients care that you have a BMW. Reminds me of the story of the auto mechanic who use to talk about all the work that he was doing to his house, now I know why the bills were pretty high.
Also talking to your assistant about someone that is dying or in Hospice is not good conversation material while waiting for the mouth to get numb. Upbeat conversations about the big game tonight or the wonderful weather is better to calm your patients.