Alzheimer‘s disease (AD) is a major disorder occurring in old age and the most common cause of dementia. Dementia results in loss of intelligence, memory, and cognitive functions. It is usually related with aging, but there are many possible causes. Identification of these edentulous patients having dementia can pose a tough challenge. Denture marking serves as the only answer to this problem. This case report highlights the denture marking done in Alzheimer patients.