Oral Care Advice for Patients with Dentures

A denture that is cleaned the way people clean teeth tends to end up scratched, stained and loose. A mouth that is only cleaned where the denture sits tends to develop sore, inflamed tissue. Both are common, both are avoidable, and neither is obvious without being told.

This article sets out what denture care actually involves — for full dentures, partial dentures and implant-retained overdentures.

Denture bases are acrylic. Acrylic is considerably softer than enamel, and it is porous at a microscopic level. Two consequences follow from this.

First, ordinary toothpaste is abrasive. It is formulated to remove film from enamel, and on acrylic it creates fine scratches. Those scratches hold stain and harbour bacteria and fungi, and once the surface is roughened it discolours faster and becomes progressively harder to clean. Toothpaste should not be used on dentures.

Second, because acrylic is porous, a biofilm forms on it within hours — a plaque equivalent that is invisible and adherent. It has to be physically disrupted, and soaking alone does not do it.

Acrylic also distorts with heat. Hot water, boiling water and dishwashers will warp a denture, and a warped denture no longer fits. Cold or lukewarm water only.

And acrylic is brittle when dropped. A denture dropped into a basin from the height of the face will often fracture. Our article on midline fracture in an upper denture covers the most common break.

Remove it and clean it after meals where practical, and thoroughly once a day.

Fill the basin with water or lay a folded towel in it before you start. This is the single most effective way to avoid a fracture.

Brush all surfaces with a soft brush — a dedicated denture brush or a soft toothbrush. Use mild soap, a denture cleaning paste, or simply water, not toothpaste. Pay attention to the fitting surface, the one that sits against the gum, because that is where biofilm accumulates and where stomatitis begins.

On a partial denture, clean around the clasps carefully. Metal clasps sit against natural teeth and trap plaque against them, which is why partial denture wearers have a higher rate of decay on the abutment teeth.

Soak daily in an appropriate cleaner. Effervescent denture tablets or a dilute cleaning solution, for the time stated on the packaging — longer is not better, and prolonged soaking in some solutions can affect acrylic and metal. For partial dentures with a metal framework, use a product labelled as safe for metal; some hypochlorite-based solutions corrode cobalt-chrome.

Rinse thoroughly before putting it back in.

This is the part that gets skipped.

Brush the gums, palate and tongue with a soft brush each morning and evening, denture out. This removes biofilm from the tissues, stimulates circulation and reduces the risk of stomatitis. It takes under a minute.

Clean any remaining natural teeth thoroughly, including between them. Partial denture wearers are at elevated risk of decay and gum disease on their remaining teeth, and those teeth are carrying the denture. Our articles on flossing properly and interdental cleaning cover technique.

Take the denture out at night, unless you have been specifically advised otherwise. The tissues underneath need a period without pressure and without being covered, and continuous wear is the strongest risk factor for denture stomatitis.

Store it in water or a cleaning solution, never dry — acrylic dries out, and drying can cause slight distortion.

If you have been told to wear a denture overnight for a period — which happens immediately after extractions, for example — follow that advice; it is given for a reason.

This is inflammation of the tissue underneath a denture, usually caused by a yeast, Candida, growing in the biofilm on the fitting surface.

It is extremely common, affecting a substantial proportion of denture wearers at some point.

It often produces no discomfort at all, which is why it goes unnoticed. The palate under an upper denture becomes red, sometimes with a defined outline matching the denture. Some people notice soreness, a burning sensation or redness at the corners of the mouth.

The main risk factors are wearing the denture continuously including at night, inadequate cleaning of the fitting surface, dry mouth, smoking, diabetes and inhaled steroid use for asthma.

It responds to management: thorough daily cleaning of the fitting surface, leaving the denture out at night, soaking the denture in an appropriate solution, and in some cases antifungal treatment prescribed by a dentist or doctor. Where the denture is old, worn or ill-fitting, replacement may be part of the answer.

If the roof of your mouth is red under your denture, have it looked at.

A sore spot in the first days of a new denture is normal and is adjusted at a review appointment. Do not try to adjust the denture yourself — filing it at home almost always makes the fit worse.

Wear the denture for a few hours before an adjustment appointment, so the sore area is visible and can be located precisely.

A denture that becomes loose over months and years is not a sign of doing something wrong. The ridge underneath resorbs continuously after teeth are lost, and the denture that fitted the ridge two years ago no longer matches its shape. This is managed by relining or replacement.

Denture adhesive has a legitimate role, especially for lower dentures on a flat ridge, but it is not a substitute for a denture that fits. If you are needing steadily more adhesive, the denture needs assessing. Use a thin amount on a clean, slightly moist denture, and clean it off completely each night.

Seek assessment promptly if you have: an ulcer that has not healed within two weeks, persistent pain, bleeding, a denture that has cracked or has a broken tooth, difficulty eating that is getting worse, or any white or red patch in the mouth that does not resolve.

Keep attending for check-ups even with no natural teeth. The examination includes a soft tissue and oral cancer check, assessment of the ridges and review of the denture fit. See our dental check-up page.

An overdenture clipping onto implants needs everything above, plus attention to the implants themselves.

Clean around each implant abutment daily with a soft brush, and around the attachment housings in the denture, where plaque accumulates in the recesses.

Attend maintenance appointments. Retention clips and O-rings wear out and are replaced periodically — this is planned maintenance rather than failure.

Watch for bleeding or soreness around the implants, which can signal peri-implant inflammation. Our article on spotting early peri-implantitis covers the signs.

For fixed full-arch bridges, cleaning is different again — see our article on cleaning under an All-on-4 bridge.

Start with soft food cut small, and chew on both sides at once — this balances the denture rather than tipping it.

Expect increased saliva and altered speech for the first days to weeks. Reading aloud accelerates adaptation considerably.

Be careful with very hot food and drinks, since an upper denture covers the palate and reduces temperature sensation.

Sticky and very hard foods stay difficult, and this is a permanent feature of removable dentures rather than something that resolves with practice.

If eating remains genuinely limiting, discuss it. Implant-retained options exist, and our article on what patients regret about fixed versus removable options is worth reading.

• Toothpaste on the denture

• Hot or boiling water

• Bleach on a denture with metal components, and household bleach generally

• Abrasive household cleaners and scouring pads

• Dishwashers

• Adjusting or repairing a denture yourself, including repair kits and superglue

• Wearing it continuously day and night

• Letting it dry out

A broken denture should be brought in. Home repairs almost always compromise the fit and make a professional repair harder.

Can I use toothpaste on my dentures?

No. It is too abrasive for acrylic and scratches the surface, which causes staining and makes cleaning harder over time.

Should I take my dentures out at night?

Generally yes, unless advised otherwise. Continuous wear is the main risk factor for inflammation of the tissue underneath.

How do I remove stains from my denture?

Daily soaking in a denture cleaner usually prevents them. Established stains and hardened deposits are removed by a dental professional; do not attempt to scrape them off.

How often should dentures be replaced?

Fit changes as the ridge resorbs, so a denture that fitted well initially will need relining or replacement over time. The interval varies considerably between individuals and is assessed at check-ups.

Is it normal for my lower denture to be less stable than the upper?

Yes. The lower ridge offers less surface area and the tongue and muscles are more active, so lower full dentures are inherently less retentive. Implant-retained options address this.

Do I still need dental appointments if I have no natural teeth?

Yes — for soft tissue examination, ridge assessment and denture review.

If your denture has become loose, uncomfortable or difficult to eat with, or if the tissue underneath is sore or red, it is worth having it assessed rather than adapting around it.

You can contact our team at our Wimpole Street practice, or see our dentures page.

This article provides general information about denture care and does not constitute individual dental advice. Persistent soreness, ulceration or any unexplained change in the mouth should be assessed in person. Wimpole Dental is regulated by the Care Quality Commission, and our clinicians are registered with the General Dental Council.

Next review due: 14 September 2027