Effectiveness of the implementation project ‘Don’t forget the mouth!’ of community dwelling older people with dementia: a prospective longitudinal single-blind multicentre study protocol (DFTM!)

BACKGROUND: The oral health of community dwelling frail older people is poor, and depends on the oral health care provisions available within their own community. The implementation project ‘Don’t forget the mouth!’ (i.e., the intervention) was created with the aim of maintaining and improving the oral health and the general health of community dwelling frail older people, with education and interdisciplinary collaborations of health care professionals and informal caregivers. Critical scientific assessment of the intervention will be described in this study protocol, focused on community dwelling older people with dementia. METHODS: This protocol describes a prospective longitudinal single-blind multicentre study, which will take place in 14 towns, each with an intervention and a control group receiving oral health care as usual. Assessment will take place four times during 12 months (i.e., at baseline, after 3, 6, and 12 months). Participants are 65 years and older, community dwelling, and suspected of dementia by their home care worker. The home care organizations will inform, and approach their clients about the study, before the researcher will reach out. The effectiveness of the intervention will be determined with the primary outcome variable ‘oral hygiene’, assessed through the presence of dental plaque (DP) or dental prosthetic plaque (DPP). The secondary outcome variables are: ‘oral health’, ‘oral health related quality of life’, ‘oral health care behaviour’, ‘general health and care dependency’, and ‘compliance of the health care professionals’. DISCUSSION: This protocol aims to assess the effectiveness of the implementation project ‘Don’t forget the mouth!’ focused on community dwelling older people with dementia. The strengths of the current study are the national roll-out of the intervention, interdisciplinary collaborations and education, and the scientific evaluation over the course of 12 months. The threats and weaknesses are in the recruitment procedure, and the adherence and compliance of the health care professionals to the project. TRIAL REGISTRATION: The Netherlands Trail Register NTR6159. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s12903-019-0786-5) contains supplementary material, which is available to authorized users.