This theoretical article presents some thoughts on research and intervention's frameworks for the well-being of nursing homes' residents with cognitive deficits associated with dementia. Based on a symbolic interactionism perspective, it examines the relations between the staff (nurses, social worker, rehabilitation worker, homecare employee) and family caregivers, to maintain identity for, by and behalf of the elderly. Adopting a critical perspective on the person-centered care approach for an clearer understanding of the person faced with dementia, the authors call for an integrating framework based on two approaches: a bibliographic approach and the holistic relational prothetic approach, allowing the recognition and support of a positive identity in elders with dementia for critical actions promoting their well-being in nursing homes.