This question focuses on your physical and mental constitution. Many students who imagine themselves pursuing a career in the medical field later come to discover they aren't up to the task. Even though their values and ideals align with the profession, they later learn they don't do well with the squeamish aspects of their field. Not only does NYUD have a vested interest in protecting their graduation rate, but they want to save their students from accumulating unnecessary student debt if they won't see their education through to their degree. Therefore, the interviewers need assurances you are up to the challenges and more difficult sights and experiences you'll encounter in your career as a dentist. You can keep your answer simple by discussing your experience and track record involving blood and other bodily fluids.