The question whether a patient needs extensive and invasive treatment, such as single-tooth fixed prosthesis, multi-teeth fixed prosthesis or oral implants, can be established only in a dialogue with mutual respect between the healthcare provider and the patient. With respect to this question, the following principles have to be considered: the patient’s autonomy, beneficence, non-maleficence, and justice. These principles are reflected in legislation and are implicitly applied in complaint and disciplinary jurisdiction. When the autonomy of a patient is not sufficiently respected by a healthcare provider, a patient complaint might be the result, such as a complaint of impertinent treatment, lack of informed consent, or poor patient documentation. If beneficence or non-maleficence principles are violated, an intrinsic treatment complaint might be the result, such as a complaint of inadequate treatment planning, often based on inadequate examination, and complications or untimely failure of single-tooth fixed prosthesis, multi-teeth fixed prosthesis or oral implants. Respecting the previously mentioned principles promotes appropriate healthcare to the patient also in complex care with other healthcare providers.