The prevalence of dental problems is indeed higher in patients with dementia. Therefore, it is important to follow these tips in your communication.
In communicating with a people with dementia, you should try to provide an environment free from any distraction. You shouldn't move too much while speaking, since constant movement makes it harder for them to focus. You should not discuss many ideas at a time; try to focus only on one subject. It is also better to pause between sentences, allowing the patient to process and understand your massage.