How long do dentures last?

The short answer: about 5 to 10 years

Most dentures last between 5 and 10 years. Cleveland Clinic says the average is 7 to 10 years with good care. A Harvard-affiliated guide says many dental professionals suggest replacing dentures every 5 to 7 years.

Why the gap? Your mouth keeps changing. The denture does not. Even a well-made set slowly stops fitting the way it did on day one. That is the real clock on your dentures, more than the plastic or the teeth.

Some people need a new set sooner. Some stretch to 10 years or more with regular checkups and relines. Your dentist can tell you where you are by looking at the fit, the bite and the wear.

Here is a simple way to think about it. A denture is not like a crown or a filling that you set once and forget. It is closer to a pair of shoes. It needs checks, small repairs and, in time, a new pair.

The type of denture matters too. A full denture rests on the gums only, so it feels the changes in your bone the most. A partial denture clips onto some of your own teeth, so it depends on those teeth staying healthy. If one of the teeth that hold the clasps is lost or decays, the partial may need to be remade.

Ask your dentist to look at your set once a year. A short checkup takes little time and can catch small problems before they turn into sores.

Why dentures wear out

Dentures are made to sit on your gums. Your gums sit on your jawbone. When teeth are gone, the bone under them slowly shrinks, because it no longer has roots to hold on to. Cleveland Clinic notes that the jawbone gradually shrinks after tooth loss.

As the bone and gum change shape, a once snug denture starts to move. A loose denture rubs, so it can cause sore spots. It can also make you chew on one side, which wears the teeth unevenly.

Because the changes are slow, many people do not notice them. You adjust a little at a time. You chew softer foods. You use a bit more adhesive. Then one day you realize you have been working around the problem for a year.

Three things wear out dentures:

• Changes in your gums and bone, which loosen the fit
• Daily chewing, which slowly flattens and chips the denture teeth
• Stains, scratches and old cleaning habits, which make the surface rough and hold bacteria

Signs it is time for a new set

Do not wait if you have any of these. A loose denture can cause sores and make eating hard. Some people turn to adhesive again and again to hold a worn set in place. That is a sign the fit has changed, not a fix.

You do not have to wait for something to break. Cleveland Clinic lists these signs that a denture needs a dentist:

• Your denture feels loose or slips when you talk or eat
• It hurts or pinches your gums
• It clicks when you speak
• It is cracked, chipped, stained or discolored
• It is more than 10 years old

Relines can add years

A reline is when your dentist adds new material to the inside of the denture so it hugs your gums again. It does not replace the denture. It brings back the fit.

Cleveland Clinic recommends a reline every 1 to 2 years, or sooner if the fit changes. Many people skip this step because the denture still looks fine. The problem is under the surface, where the shape of the gums has moved.

The best time for a reline is before you have sore spots, not after. If you wait until the denture hurts, your gums may already be irritated, and the dentist may need to let them calm down before taking a new impression.

If your denture is still in good shape but feels loose, a reline is often the first thing to ask about. If the teeth are worn down or the base is cracked, a new set makes more sense.

How to make your dentures last longer

Good habits go a long way. Cleveland Clinic also advises taking dentures out for at least eight hours a day. This rests your gums, lowers harmful bacteria and helps protect your jawbone.

Here is what helps most:

• Take them out once a day and clean them with a denture brush and cleanser. Do not use regular toothpaste, which can scratch.
• Soak them overnight in water or denture solution so they do not dry out and warp.
• Handle them over a folded towel or a sink of water. Dropped dentures crack easily.
• Skip hot water. It can change the shape of the plastic.
• Do not use bleach or harsh chemicals unless your dentist says so. They can fade the pink base and weaken the plastic.
• Brush your gums, tongue and the roof of your mouth twice a day.
• Go to your dentist for regular checkups, even if you have no natural teeth left.

What about a denture that does not need replacing so often?

Some people get tired of the cycle of relines and new sets. If that is you, ask about dentures held by dental implants. Implants act like tooth roots and help stop the bone loss that loosens regular dentures. Cleveland Clinic says implants can last a lifetime with proper care. They cost more than regular dentures, and not everyone has enough bone for them.

A dentist can check this with a 3D scan. A full set of fixed teeth on implants is one route. A removable denture that snaps onto a few implants is another. In both cases the denture no longer rests only on your gums, so it moves far less.

The right choice depends on your bone, your health and your budget. It is fine to ask for the pros and cons of each option before you decide. There is no pressure to change anything if your current dentures work well for you.

Dentures and your health

Old dentures are not only a comfort problem. A rough or poorly fitting denture can trap bacteria and yeast. This can lead to sore, red gums under the denture. If you see redness, white patches or cracks at the corners of your mouth, call your dentist.

If you have pain that does not go away, bleeding, or a sore that lasts more than two weeks, see a dentist or doctor soon. Do not try to fix a broken denture with glue from the store. It can damage the denture and your mouth.

If you have a medical condition such as diabetes, or if you take medicines that dry your mouth, tell your dentist. Both can raise the chance of gum irritation and infections under a denture.

Dentures at Kendall Dental Associates

We make and care for partial and full dentures at our office in the Kendall Mall, 8833 SW 107th Ave, Miami. We have served South Florida since 1973. Our team uses digital scans and 3D imaging, and we make some custom items in our own office with 3D printing. We can check the fit of your current set, tell you if a reline or a new denture makes sense, and talk through implant options if you want something more stable.

We are open Monday to Friday, 8:00 AM to 5:00 PM. Call 305-271-1421 to book. Financing is available, and we accept most dental insurances and most Medicare supplemental plans. If a denture breaks or you have a dental emergency, our emergency line is open 24/7.

Common questions

This article is general information, not medical advice. Your dentist will confirm what is right for you at your exam. General information checked against: my.clevelandclinic.org, face.meei.harvard.edu.