These social issues are intricate. Reading through the threads, the following are my gathered facts:
* Dentists are retiring, so they don't retire within the next couple years, they retire in the next few years.
* A demand for instructors in dental school. I've came across similar observations from ADA publications.
* The patients willingness, or awareness of dental health plays a more significant role than the number of dentist, dentistry professors. It doesn't matter how many dentist exists, if the patient doesn't care for its dental hygiene, nothing else matters.
* Government in the past, has try to fix the medical field problem by jacking up the medical school enrollment (Nixon in the 70's), encouraged influx of foreign medical students, and all the complexities has led to the current health care dilemma.
* Dental care is more of a privilege than a right, and this is different than the medical field, where people can argue differently.
* Dental procedures has less risk than medical procedures. The malpractice insurance is less.
* Less lawyers are involved in dentistry.
Gathering these facts, there will be a demand for dentistry, and whether if the government will step in is the question at hand, and I'm not expert in politics. What does this demand for dentistry will mean for dentist is the question at hand.
I don't know. In the long run, if the demand for dentistry does increase, perhaps there will be other solutions other than government stepping in. Such as... dentist working longer hours, more general dentist as oppose to specialties, more instructors may occur, ADA promoting better dental health. All these can factor into the solution to the increase in demand for dentistry. To say that government will simply step in and screw the dental field like what it did to the medical field is... (seems to me) requires more assumptions. In addition, government still has to tackle the health care mess, before they can deal with other health fields.
These are my 2 cents. I would love attacks to my post, so I can understand better. Please pull my analysis apart like the way you would pull a molar.