Now that more and more older people are coming, the number of people suffering from dementia is increasing, also among people with a migrant background and people with intellectual disabilities. Alzheimer's disease is the most common cause of dementia. Characteristic of dementia is the combination of memory impairment and other cognitive impairments that increasingly impede functioning in daily life and social functioning. People with dementia are more vulnerable because they are less able to assess and articulate their complaints. As dementia progresses further, the possibilities for self-management decrease. There are also more problems with oral care. Recognizing the initial phase of dementia is not easy for the patient and his family, but also not for caregivers. For migrants and people with intellectual disabilities, recognizing and diagnosing dementia is more difficult. Symptoms of dementia are often attributed to aging or stress. In dental practice, patients with dementia often get out of sight when they do not respond to a call or can no longer make an appointment. Rest and safety during treatment are especially important for people with dementia. For problems, look for a solution that fits the person and the degree of dementia. Dementia sufferers usually get a case manager.