July 2016: Recommendations 1.1.1 and 1.1.2 have been amended to clarify they apply to people at increased risk.
'Routinely' has been added to recommendation 1.1.3 for consistency with recommendation 1.1.2. This addition emphasises NICE's standard advice on healthcare professionals' responsibilities. Doctors and dentists should offer the most appropriate treatment options, in consultation with the patient and/or their carer or guardian. In doing so, they should take account of the recommendations in this guideline and the values and preferences of patients, and apply their clinical judgement.
September 2015: This guideline is an update of NICE guideline CG64 (published March 2008). No new recommendations have been added. For recommendations marked as  the evidence has been reviewed but no change has been made to the recommended action.