Hahahaha.
Well, as a past dental technician for 9 years I got a good chuckle out of this. Partly because I remember working for dentists that were like that. I remember one guy in particular who made ME do all the work, while the whole time he sat in his back office playing solitaire on his PC and hardly ever went to check the patients like he should.
Just FYI, that's a rare case. Usually what happens to dentists when they take thier sweet time getting to you is that the common case these days is to "overbook" to make more money, and your dentist is in another room working on about 2 more patients than he should be handling at the moment. I swear, pretty soon dentists will have drive through windows, it's all about the $$$ these days.
Which is why I quit, and am in Med School becoming an Opthamologist myself. LOL. ;)