‘Don’t forget the mouth!’: a process evaluation of a public oral health project in community-dwelling frail older people

Background Older people are encouraged to remain community dwelling, even when they become care-dependent. Not every dental practice is prepared or able to provide care to community-dwelling frail older people, while their ability to maintain oral health and to visit a dentist is decreasing, amongst others due to multiple chronic diseases and/or mobility problems. The public oral health project 'Don't forget the mouth! (DFTM!) aimed to improve the oral health of this population, by means of early recognition of decreased oral health as well as by establishing interprofessional care. A process evaluation was designed to scientifically evaluate the implementation of this project. Methods The project was implemented in 14 towns in The Netherlands. In each town, health care professionals from a general practice, a dental practice, and a homecare organization participated. The process evaluation framework focused on fidelity, dose, adaptation, and reach. Each of the items were examined on levels of implementation: macro-level, meso-level, and micro-level. Mixed methods (i.e., quantitative and qualitative methods) were used for data collection. Results The experiences of 50 health care professionals were evaluated with questionnaires, 22 semi-structured interviews were conducted, and the oral health of 407 community-dwelling frail older people was assessed. On each level of implementation, oral health care was integrated in the daily routine. On macro-level, education was planned (dose, adaption), and dental practices organized home visits (adaption). On meso-level, health care professionals attended meetings of the project (fidelity), worked interprofessionally, and used a screening-referral tool of the project DFTM! in daily practice (dose, adaption, reach). On micro-level, the frail older people participated in the screening of oral health (fidelity, dose), had their daily oral hygiene care observed (adaption) and supported if necessary, and some had themselves referred to a dental practice (reach). The semi-structured interviews also showed that the project increased the oral health awareness amongst health care professionals. Conclusions The project DFTM! was, in general, implemented and delivered as planned. Factors that contributed positively to the implementation were identified. With large-scale implementation, attention is needed regarding the poor accessibility of the oral health care professional, financial issues, and increased work pressure. Trial registration The Netherlands Trial Register NTR6159, registration done on December 13th 2016. URL: https://www.trialregister.nl/trial/6028.