In the U.S., checkups are primarily done by the (less-expensive) dental assistant doing the X-rays, the (moderately expensive) hygienist doing the cleaning, fol

In the U.S., checkups are primarily done by the (less-expensive) dental assistant doing the X-rays, the (moderately expensive) hygienist doing the cleaning, followed by a quick inspection of mouth and X-rays by the (expensive) dentist. I imagine that the predictability and minimal time use of the dentist would allow it to be quite profitable. However, as teeth become drastically less susceptible to disease, people will feel much less need to have regular dentist visits...