The document discusses the principles of ethics in dentistry, including its origins, history, and obligations of dentists. It covers the Hippocratic Oath, Nuremberg Code, and key ethical principles like non-maleficence, beneficence, respect for persons, and justice. The duties of dentists toward patients, professional colleagues, and society are explained. Unethical practices are also defined. Finally, the Helsinki Declaration, which provides recommendations for ethical human subject research, is introduced.