This article develops an approach towards dementia care that highlights the nature of dementia care triads comprising the person with dementia, their informal carer, and the health and social professional. In particular, the article highlights various social practices that are shown, from our practice, to contribute towards the inclusion or exclusion of particular triad members. The article reviews existing work on triadic interaction, particularly in relationship to dementia care. Various communication processes are identified and illustrated using examples taken from casework. The implications of this approach for theory, practice, education, and research within dementia care are discussed.