Dental and Mouth Care for Someone with Dementia

Brushing, dentures and dental visits often get harder as dementia progresses; here's why mouth care matters, practical ways to make it easier at home, and how to work with a dentist.

By Jim Pavlish, Editor · Last updated: October 25, 2026 · Editorial policy

Mouth care is one of the daily tasks that quietly slips when someone has dementia. A person may forget to brush, forget how to use a toothbrush, or stop recognizing what toothpaste is for. They may also be unable to tell you that a tooth hurts. Over months, that can lead to cavities, gum disease, loose dentures and painful infections, which can show up as poor eating, restlessness or a sudden change in behavior.

This page offers general information for families. A dentist, dental hygienist or the person's doctor is the right source for advice about a specific mouth problem.

Why it matters

• Eating and weight. Sore gums, broken teeth or dentures that rub make chewing painful, and a person may simply eat less (see Eating, Drinking and Nutrition).
• Hidden pain. People with dementia often can't describe pain. Pulling at the face, refusing food, grinding teeth or new agitation can all be signs of a mouth problem (see Recognizing Pain in Dementia).
• Infections. Bacteria from an unhealthy mouth can be breathed into the lungs, especially for people who have trouble swallowing (see Swallowing Problems (Dysphagia) in Dementia).
• Comfort and dignity. A clean mouth and fresh breath help a person feel more like themselves.

In the early stage: keep the routine going

Early on, most people can still brush on their own with reminders. Helpful steps:

• Keep brushing at the same times each day, for example after breakfast and before bed, tied to an existing habit.
• Leave the toothbrush and toothpaste out in plain sight, and put away other tubes (like hand cream) that could be confused with toothpaste.
• Schedule a full dental checkup soon after a diagnosis, while the person can still take part in decisions and sit comfortably through treatment. Tell the dentist about the diagnosis.
• Ask the dentist whether any work should be done sooner rather than later, since longer procedures can become harder as the illness progresses.

In the middle and later stages: step-by-step help

As thinking skills change, brushing becomes a series of steps the person can't hold in order. Short, simple prompts work better than general reminders:

• Break it down. "Hold your toothbrush." "Now put on the toothpaste." "Brush your top teeth." Give one step at a time.
• Show, don't tell. Brush your own teeth alongside them so they can copy you.
• Hand-over-hand. Place your hand over theirs and guide the brush gently.
• Use easier tools. A soft brush, a brush with a thicker handle, or an electric brush may be easier to manage. A small smear of toothpaste is enough.
• Pick a calm time. If evenings are hard (see Sundowning), brush earlier in the day.
• Stop and try later. If the person becomes upset, don't force it. Come back in 15 or 20 minutes with a fresh approach.

If you are brushing for them, stand slightly to the side or behind rather than straight in front, explain what you are doing, and use a calm voice. Check the mouth for sores, swelling, broken teeth or food held in the cheeks.

Dentures

• Take dentures out every night to clean them and give the gums a rest; store them in water or a cleaning solution.
• Brush the gums, tongue and roof of the mouth gently with a soft brush.
• Watch for dentures that no longer fit. Weight loss can change the shape of the mouth, and poorly fitting dentures cause sores and make eating harder.
• Label dentures if the person lives in a care setting; they are easy to lose.

Dry mouth

Many older adults have a dry mouth, and some common medicines make it worse. Dry mouth raises the risk of tooth decay. Offer water often, and ask the dentist or pharmacist about products that help. Don't change or stop any medicine without talking to the prescriber.

Working with the dentist

• Look for a dentist who has experience with older adults or people with dementia, and mention the diagnosis when you book.
• Ask for short morning appointments when the person is usually at their best.
• Bring a list of medicines and any recent changes in eating or behavior.
• Stay with the person if that helps them feel calm.
• Ask how often checkups and cleanings are needed now, and whether a fluoride treatment or special toothpaste makes sense.

If the person lives in a nursing home or memory care, ask how mouth care is handled each day and who checks dentures (see Choosing Memory Care or a Nursing Home).

Signs to call the dentist or doctor

Call promptly if you notice swelling of the face or jaw, bleeding gums that don't settle, a broken tooth, sores that don't heal within about two weeks, sudden refusal to eat, or new signs of pain around the mouth. For more on spotting pain when a person can't explain it, see Recognizing Pain in Dementia.

The takeaway

Daily mouth care protects comfort, eating and health. Keep it simple, do it at a calm time of day, and lean on your dental team. Missing a day now and then is not a failure; getting back to the routine is what counts.

Sources

1. Alzheimer's Association: Dental Care
2. American Dental Association: Aging and Dental Health
3. Alzheimer's Association: Middle-Stage Caregiving

Not medical advice. This article is general information, not a diagnosis or treatment plan for any individual. Talk with a doctor about your situation.

Related articles

• Bathing, Dressing and Grooming
• Daily Care and Routines
• Recognizing Pain in Dementia
• Eating, Drinking and Nutrition
• Swallowing Problems (Dysphagia) in Dementia