Dentists must obtain informed consent for every treatment you propose and perform on patients or from the patient's legal guardian or decision-maker. Full set of CBCT sample forms, including informed consent, refusal, referral and notice of non-read scan.The ADA Principles of Ethics and Code of Professional Conduct. Tags. A limited resident license is available for dentists to practice dentistry in this state to university postdoctoral students or residents in dental education. Dental hygienists are required to complete 15 clock hours of continuing education (CE) annually. You must participate in the decision-making process. Resident physicians may appropriately obtain informed consent because they may engage in the practice of medicine under Washington law. Boston, MA 02118-6200.