What is it about carer-led oral hygiene interventions for people with intellectual disabilities that work and why? A realist review.

The theories from this realist review will direct future interventions by suggesting the mechanisms and contexts that are important to achieve the intended outcome of improved oral health for people with intellectual disabilities. These are, of course, propositions intended for testing, rather than proven. The parallel use of Cochrane and realist methods provides a unique richness to our hypothesis of what works, for whom, when and how.