Improving oral health in nursing home residents: A cluster randomized trial of a shared oral care intervention.

The shared oral care intervention based on a situated learning perspective was effective in improving oral health among care home residents. However, after termination of the intervention, the effect quickly decreased. This confirms the challenges of achieving long-term improvement in oral health in nursing home residents. An implementation strategy focusing on achieving changes at both organizational and individual levels with persistent attention to oral health care seem required for long-term improvement.