Social work assessments underpin support plans for many people living with dementia in their own homes in England, but it is unclear how they acknowledge that dementia places people at greater risk of mouth and dental problems affecting their wellbeing. We explored if and how dental needs are addressed during care assessments and social workers' perceptions of this aspect of personal care. This study analysed (a) semi-structured interviews with 14 social workers providing support to people living with dementia in their own homes, (b) data from 39 care assessments and support plans from two English local authorities. Interviews were recorded online, transcribed, and thematically analysed. Documents were analysed descriptively and presented visually. Participants acknowledged that oral care may be overlooked during assessments and reflected on various reasons, including assumptions of responsibility and role restrictions, limited training, and poor links with dental services. This was further evident in the analysis of assessment documentation. Participants identified potential strategies and practice changes to better integrate oral care in social work practice. These included increased awareness and more discussions around dental needs, skills training and streamlining of support. The findings have implications for social workers, educators, and commissioners or funders engaging with people affected by dementia in social work and beyond.