Twinkle Toes Starts Orthodontics!

We are blessed to find a great orthodontist in our city. He started Firstborn's dental work last fall. I asked if I could go ahead and bring my 2nd daughter in to see if she was ready for work. I can't drive to this clinic, so we have to taxi it. This way I knock out two birds (girls) with one stone (taxi fare). Anyway, it was time to start! Isn't she cute???
My orthodontist can't understand why I don't bring all my children to each appointment. He has two girls and wanted many more. I try to explain what my son would be like in a dental clinic, and he just laughs and says, "Just bring him. We'll watch him for you." What do you think? Should I try it? There's an awful lot of buzzy machines/tools in there....