This sentence has been told by Hippocrates and it is the main principle of all doctors for centruries. Doctors should listen to his/her patient's complaints and if he/she has not enough knowledge about he/she must refere the patient to another doctor, instead of doing malpractice.
Doctor-patient relationship is very special and completely different from all other professions. A patient is not a customer.
Doctors should always speak truth to his/her patient try to the proper treatment and definetely refuse the extreme or erroneous demands.
Doctors need lifetime education for providing health to a person who had lost it. From this point view another sentence told by Saint Luke becomes our principal;
Dentistry is one of the professions which is using the benefits of technology all over the world. Improvements in materials, techniques, instruments, computer technology and communication provides possitiveness to own profession.