This proposed regulation will not change the "frequent flyers" who take up much of the board's time and energy.  If you want to have practitioners who are found negligent of following regulations take the exam, fine.  Otherwise, the exam should just be for new dental practitioners.  You could make an online "jurisprudence review course", and offer it to practitioners with licenses.  I expect that most providers would gladly take this course, especially if it provided a free CE credit, and you would not be penalized if you did not get a good score the first time.