Denture Care & Maintenance

Daily Cleaning

Dentures accumulate plaque, bacteria, and food debris just like natural teeth. The difference is that acrylic is softer than enamel and scratches more easily, so the cleaning tools and products you use matter.

After each meal, remove the denture and rinse it under running water to flush away loose food particles. At least once a day -- ideally before bed -- brush all surfaces of the denture with a soft-bristle denture brush. Use a non-abrasive denture cleanser or mild dish soap. Do not use regular toothpaste; its abrasive particles will create microscopic scratches in the acrylic surface. Those scratches trap bacteria and stain, making the denture look dull and smell unpleasant over time.

Pay attention to the tissue-fitting surface (the inside of the denture that contacts your gums) as well as the teeth and the polished outer surface. Plaque that builds up on the tissue side can cause inflammation, a condition sometimes called denture stomatitis. It presents as redness and soreness of the palate or ridge and is largely preventable with consistent cleaning.

Overnight Soaking

Dentures should be removed before sleep and soaked in water or a denture-cleaning solution overnight. There are two reasons for this. First, the oral tissue needs time without the denture pressing against it. Wearing a denture continuously without a break promotes fungal growth and chronic tissue irritation. Second, acrylic can dry out and warp if left exposed to air for extended periods. Keeping the denture submerged maintains its shape and dimensional stability.

Use room-temperature water or a commercial soaking solution formulated for dentures. Avoid hot water -- it can distort the acrylic base. If your denture has metal components (clasps on a partial, for example), check the soaking solution label to make sure it is compatible with metal; some effervescent tablets can tarnish certain alloys.

Before reinserting the denture in the morning, brush your gums, tongue, and palate with a soft toothbrush to stimulate circulation and remove any plaque or debris. If you have remaining natural teeth, brush and floss them as normal before placing the partial denture.

Relines

The bone and tissue beneath a denture change shape over time. This is a natural biological process -- the jawbone remodels continuously after teeth are lost, and the rate of change varies from person to person. As the ridge shrinks, the denture gradually becomes looser, and areas of poor fit can create sore spots or allow food to get trapped underneath.

A reline restores the fit by resurfacing the tissue side of the denture with new acrylic material. During the appointment, Dr. Rasmussen places a thin layer of impression material inside the denture, seats it in your mouth, and allows the material to capture the current contour of your ridges. The denture is then sent to the laboratory, where the old tissue surface is removed and replaced with new acrylic that matches the impression.

Most dentures benefit from a reline every one to two years, though the timeline depends on how much the underlying bone has changed. Patients who have had recent extractions or significant bone loss may need relines more frequently. A well-timed reline extends the usable life of a denture and prevents the tissue damage that a poorly fitting appliance can cause.

Rebase

A rebase is similar to a reline but more extensive. Rather than replacing just the tissue-fitting surface, the entire acrylic base of the denture is remade while keeping the existing teeth. This is appropriate when the base material has become worn, discolored, or weakened, but the teeth themselves are still in good condition and properly positioned.

A rebase involves the same impression process as a reline, but the laboratory work is more involved -- the old base is cut away entirely and new acrylic is processed around the existing teeth. The result is essentially a new denture base with the original tooth setup preserved.

Repairs

Dentures can crack, chip, or break if dropped on a hard surface, and individual teeth can come loose or fracture from normal wear. In most cases, these problems are repairable without fabricating an entirely new denture.

A cracked or broken base is repaired by bonding the pieces together with acrylic resin and reinforcing the repair area. A lost or broken tooth is replaced with a matching replacement tooth that is chemically bonded to the base. Bent or broken clasps on a partial denture can often be resoldered or replaced.

Do not attempt to repair a denture yourself with household adhesives. Superglue and epoxy are not compatible with denture acrylic, and the chemicals they contain can irritate oral tissue. Home repairs also tend to alter the fit of the denture, which creates new problems. Bring the broken pieces to the office and let the laboratory handle the repair properly.

Soft Liners

A soft liner is a layer of pliable, cushioning material applied to the tissue side of the denture in place of hard acrylic. Soft liners are used for patients whose ridges are thin, bony, or chronically sore -- situations where the hard surface of a standard denture causes persistent discomfort despite a good fit.

The soft material acts as a shock absorber, distributing chewing pressure more gently over sensitive tissue. It is particularly useful for patients with flat or knife-edge ridges (common after years of denture wear), patients who have had surgical procedures on the jaw, and patients with certain oral conditions that make the tissue more vulnerable to pressure.

Soft liners do require more maintenance than a hard acrylic surface. They are more porous and can harbor bacteria and fungus if not cleaned carefully. Most soft liners need to be replaced every one to two years as the material loses its resilience and becomes stiff or discolored. Dr. Rasmussen will discuss whether a soft liner is appropriate for your situation and what the care routine involves.

Regular Exams and Professional Maintenance

Even if your denture feels comfortable and you have no complaints, annual check-ups are important. Dr. Rasmussen examines more than the denture itself during these visits -- he evaluates the health of the gum tissue, checks for signs of fungal infection or tissue changes, screens for oral pathology, and assesses the fit of the prosthesis against the current ridge anatomy.

Changes in fit happen slowly enough that many patients do not notice them until a sore spot develops or the denture becomes noticeably loose. A professional evaluation catches these changes early, before they cause tissue damage or require a more involved correction.

During the maintenance visit, the denture is also professionally cleaned to remove calculus (tarite) deposits that home brushing cannot address. Stains from coffee, tea, and tobacco are polished out, and any minor chips or rough spots are smoothed.

When to Call the Office

• Persistent sore spots that do not resolve within a day or two of developing.
• A noticeable change in how the denture fits -- increased looseness, rocking, or difficulty keeping it seated during meals.
• Cracks, chips, or broken teeth on the denture.
• Redness, swelling, or white patches on the tissue beneath the denture.
• A change in your bite -- the teeth no longer meet evenly when you close.
• Any lump, sore, or unusual area in the mouth that does not heal within two weeks.

Do not ignore persistent discomfort or tissue changes. Most issues are straightforward to address when caught early, but they can become more complex if left untreated.