When I was in my early 40s, it was recommended by my dentist that I see an orthodontist, which I did. I was fitted with orthodonture and every 3 months I would come in for a check-up and some adjustment. I would lay back in a dentist chair and a technician would work on me from behind my head. I remember having the distinct feeling that she was cradling my head between her boobs, using them as a kind of stabilizing device. I never found out if that was indeed the case, but imagining that it was so made those visits very nice indeed.
Many Thanks to Wicked Knickers