1. ADA (2023) Principles of ethics & code of professional conduct. American Dental Association. https://www.ada.org/about/principles/code-of-ethics. Accessed 7 August 2023
2. DGZMK (2022) Codex der Deutschen Gesellschaft für Zahn-, Mund und Kieferheilkunde [Codex of the German Society of Dentistry, Oral and Maxillofacial Surgery]. DGZMK-Codex. https://www.dgzmk.de/codex. Accessed 7 August 2023
3. CED (2017) Code of ethics for dentists in the European Union. Council of European Dentists. https://cedentists.eu/ced-code-of-ethics.html. Accessed 7 August 2023
4. Brands W, Naidoo S, Porter S et al (2018) Dental Ethics Manual 2. FDI World Dental Federation. Quintessence Publishing, London. https://www.fdiworlddental.org/resource/dental-ethics-manual-2. Accessed 7 Aug 2023
5. Mersel A (2022) Treatment dilemmas for vulnerable patients in oral health. Clinical and ethical issues. Springer, Cham