Just because the OP is a predent doesn't mean he or she cannot recognize decay. Just because I don't have a MD after my name doesn't mean I don't know what to look for to see I have high blood pressure, and even though as a DDS, I cannot diagnose hypertension, I know what is required to call someone hypertensive. Just because I don't have 10 years of experience as a mechanic, I have been around cars enough to tell the difference between radiator fluid leak and an oil leak. But if you asked me how to fix a leaking radiator, I don't have the knowledge. And even a person with little training can tell when a plant looks a little sick and needs help, but unlike my friends with years of gardening training, I cannot tell you the specific disease killing the plant just by looking at the bark. It's not hard to diagnose gross decay...that's probably one of the easiest things to do in dentistry. It's almost ridiculous to think that a person who has been in a dental office for several years (an assumption on my part) in the back office does not at least pick up on how to see gross decay. Knowing the right treatment, the etiology that caused the disease, and the other complicating factors is another story, but so far everyones blasting the OP for even questioning that the dentist is perfect at his job. There are thousands of dentists in the US, not every one of them is a saint and not everyone of them is gods gift to dentistry. The possibility that the OP could be right about this dentist is hardly impossible.
With that in mind, I'm not taking what this original poster said as gospel. Human beings are prone to exaggeration, and if the OP isn't exaggerating, then they should not just consider quitting and - oh dear - having the hygienist and DA follow him or her. He or she should report this dentist to the Dental Board in the state. It's all well and nice that you come on an anonymous message board to blast a dentist saying he is incapable of even simple diagnosis but to also insinuate that there are far greater problems with how he fails to treat his patients. You then tell us that only the truly worthy who do it only because they love it and love caring for patients should have the right to pursue this career. Well, if you care so much about patients...maybe you should consider their well being and see to it that this grossly incompetent dentist (at least in your opinion) have to answer to the dental board and not harm another patient.
Unless of course you're not being totally honest here.