The changing nature of consent.

Consent is a foundational principle of medical and dental ethics. The importance of the concept has changed over time and it is now viewed as more important than it has ever been, both within the profession and by wider society. This article looks at the nature of consent historically, the changes it has undergone, and some of the contemporary challenges in this area. The philosophical basis of consent is considered, looking at two lines of thought relating to autonomy and prevention of harm. The difficulty and appropriateness of providing 'fully-informed' consent is then considered along with some of the modern problems relating to consumerist culture, and the social changes that have caused them. By looking at consent from a social and philosophical standpoint, we can broaden our thinking to give context to the day-to-day practicalities of obtaining consent in practice. These practicalities are addressed in subsequent articles within this issue of the Primary Dental Journal.