What are the Index of Orthodontic Treatment Need (IOTN) guidelines for NHS orthodontic treatment in the UK?
Understanding how NHS orthodontic treatment is assessed can feel confusing, particularly when some people qualify for free braces and others do not. The answer usually comes down to the Index of Orthodontic Treatment Need (IOTN), a system used throughout the UK to determine who has the greatest clinical need for orthodontic treatment.























