Special care dentistry (SCD) provides holistic oral service provision for people with complex health and care needs. These can include physical, sensory, intellectual, mental, medical, emotional or social impairment or disability or, more often, a combination of these factors. The level of disability within these population groups can vary, and a proportion of people will have multiple and overlapping impairments and/or medical conditions. This paper explores a number of possible research methods that may better reflect the diversity and challenges of this population group, where the emphasis is placed on co-production and co-design.