Randomisation will be at the cluster (school) level. A computer-generated randomisation schedule will be used to randomi clinical trials

A school-based study, co-designed with teachers and families to help improve children's oral health behaviours

This study looks at new ways to help 7-8 year old children in Greater Manchester have healthier teeth. It compares extra tooth-brushing support and school lessons with usual teaching to see which works best for preventing tooth decay.