Tooth Movement & Loss

My denture is loose: why, and what can be done?

If your denture moves a little more every year, the problem is not the denture but the bone underneath

If a denture that fitted perfectly years ago now lifts when you talk, the denture has not changed; the base it sits on has shrunk. On this page we explain why the bone shrinks, what adhesive does and does not solve, how much time relining buys and at what point it is time to talk about a fixed solution. Send us your X-ray and we will write to you within 24 hours to tell you how much bone is left under your denture.

Short answer

If your denture is still moving after the first few days and adjustments do not fix it, the cause is usually the bone underneath shrinking. After a tooth is taken out, the bone slowly recedes because it has lost the load the root used to carry, and this shrinkage goes on for years; the ridge the denture sits on gets lower while the denture stays the same, and a gap opens up between them. Adjustments and adhesive close this gap for a while, and relining refits the denture to the shrunken base. The only thing that stops the shrinkage itself is an implant, which passes the chewing load not over the gum but through the bone.

Why it moves: The bony ridge under the denture shrinking
What relining solves: The fit to the base, not the shrinkage itself
Not something to wait on: A sore that does not heal even after the denture is adjusted
Initial assessment: From your X-ray, within 24 hours

Medically reviewed by Bilge Ilgın, Dentist · ImplantologyLast reviewed 2026-08-31

Why a denture gets loose over time

A full denture is not screwed onto anything. It sits on the ridge of bone under the gum and gets its hold from three things: how well it fits this ridge, the thin film of saliva in between and, in the upper jaw, the suction created under the palate. In other words, what keeps the denture in place is not the denture itself but the base it sits on. When the base changes, so does the hold.

After a tooth is taken out, that base starts to shrink. A healthy root spreads the force of chewing into the bone, and that load keeps the bone alive and constantly renewing itself. When the root goes, the load goes too; the bone stops renewing itself and recedes. The shrinkage is fastest in the first few months, then slows down, but it does not stop. Ten years after an extraction, the ridge of bone there is not the ridge it was on the day of the extraction.

The denture itself speeds this process up. The force of chewing is no longer passed through roots into the bone but through the hard base of the denture, first onto the gum and from there onto the top surface of the bone. Bone responds to this kind of pressure from outside by receding. The more the denture moves, the more unevenly the pressure is spread, the faster the shrinkage and the more the denture moves the following year. It is a cycle that feeds itself.

That is why even a denture made from a flawless impression on the first day becomes loose over the years. The shape of the denture has not changed; the ridge underneath has got lower. The gap that opens up first breaks the hold of the saliva film, then the denture starts to lift when you talk, and finally it slides when you bite into something hard. This is almost always the sequence patients describe, and although it looks like a problem of adjustment, it is a problem of the base.

A lower denture becomes loose much earlier than an upper one. Because an upper denture also covers the palate, it rests on a broad surface and creates suction there. A lower denture sits on a thin horseshoe-shaped ridge; the tongue pushes it from the inside, and the cheek and lip from the outside, all the time. As the ridge gets lower, the lower denture has nothing left to hold on to. That is the reason behind the words 'the top one is fine, but the bottom one won't stay in at all'.

The denture is not the only visible side of the shrinkage. As the bony ridge gets lower, the distance between the nose and the chin gets shorter, the lips sink inwards, permanent lines form at the corners of the mouth and the lower third of the face gets shorter. The same denture sits a little further in every year; you look in the mirror and think you are ageing, when what has changed is the skeleton beneath your face.

A denture an adjustment will fix, and a denture that has lost its base

We make this distinction after holding the denture in our hands, looking inside your mouth and measuring the bone you have left. If you are in the first list, what we will talk about is the denture itself; if you are in the second, what we will talk about is the base.

The tooth can be saved

It moves after a recent extractionThe bone at the extraction site changes shape quickly in the first few months, and a denture made during that time develops a gap within a few months. Here the reason for the movement is not advanced bone loss but healing that is still going on. Relining refits the denture to the new shape.
The bony ridge can still be clearly feltIf the height of the ridge is still there when you press with a finger, and the denture is loose only because of a gap that has opened between it and the ridge, relining sits the denture back on its base. This is a procedure that genuinely brings the hold back.
The denture causes a sore in one spotA sore that always appears in the same place comes from the edge of the denture being too long in that area. The edge is thinned and the sore heals within a few days. The problem here is not the hold but the shape of the edge.
The problem is only the biteIf the denture sits well at rest but slides forwards or sideways when you bite, the order in which the upper and lower teeth touch has gone out of line. Once the contact points are corrected, the sliding stops. This adjustment is a few minutes' work, and we often see it put off for years.

Saving it is unlikely to hold

A gap has opened again after a second reliningEach relining fits the denture to the base as it is that day, and because the base keeps shrinking, the time gained gets shorter every time. If you are discussing the same procedure for a third time, the decision you are making is no longer about the denture but about the bone left under it.
The ridge in the lower jaw has flattenedAs the bony ridge keeps shrinking, it first gets thinner and then flattens out completely. On a flat base the denture has no ridge left to rest against; even a new denture made from the best impression moves after the first month.
You cannot eat without adhesiveAdhesive becoming a daily necessity is the clearest sign that the denture cannot hold on its own. At this point, changing product does not change the outcome.
Sores keep coming back in different placesA sore in one spot is a problem with the edge; sores that open up one after another in different parts of the mouth mean the denture is moving all the time. Adjusting a denture that rubs is not the same as fixing a denture that moves.

How we tell whether the problem is the denture or the base

This sequence is not treatment but decision making. At the end of it you know why your denture moves, how many years each option buys and why that is.

1
Send us your X-ray
If you have a panoramic X-ray or a CBCT scan, send it through the form; we will write to you within 24 hours about how much bone is left under your denture and which options are on the table. You do not need to travel for the initial assessment. The final decision is made after an examination and three-dimensional imaging.
2
We talk through your denture's history
How old it is, how many times it has been relined, how much adhesive it needs each day and when the movement started all feed directly into the decision. A denture relined twice in five years and a ten-year-old denture that has never been relined do not tell the same story.
3
We hold your denture in our hands
We look at the length of the edges, how the fitting surface meets the ridge, how worn the teeth are and which side touches first when you bite. This examination has one purpose: to find out whether the source of the movement is in the denture itself or not.
4
Examination of the mouth
We look for pressure sores, redness on the surface of the palate in contact with the denture, excess tissue that has grown where the edges rub and the height of the bony ridge as it can be felt by hand. We assess separately any sore that has lasted longer than three weeks without healing.
5
Three-dimensional imaging
A CBCT scan shows the real height and thickness of the remaining bone, where the nerve in the jaw runs and, in the upper jaw, how far down the floor of the sinus comes. If we are going to talk about a fixed solution, we do not do so without this image.
6
The decision
If the bone is still there, we tell you plainly how much time relining or a new denture will buy. If the ridge has flattened, we tell you that plainly too; at that point, persevering with the denture means buying time at the cost of the remaining bone shrinking further.

The options

The options below are not rivals to one another but steps on the same path. They start with the least invasive, and each step buys more time than the one before.

Adhesive

It temporarily fills the gap between the denture and the gum and improves the hold for part of the day. That is what it does; it does not bring bone back or remove the reason the denture moves. Its real drawback is this: because it makes a denture that does not fit wearable, it hides the rubbing and the shrinkage going on underneath. On the day it becomes a daily necessity, adhesive stops being a solution and becomes a warning sign.

Relining

A new layer is added to the surface of the denture that faces the gum, so that the denture fits the shrunken base again. The hold genuinely comes back and sores heal. But relining fits the denture to the base; it does not make the base bigger: because the bone keeps shrinking, the time gained gets shorter with every repeat. The relief a first relining gives you is not the same as a third.

A new denture

A denture with worn teeth, a cracked base or one that has lost the height of its bite is replaced. A new denture is made to fit the base as it is on the day of the impression and holds noticeably better in the first few months. If the height of the ridge is still there, this is the right step; if the ridge has flattened, a new denture goes back to the same place in newer material.

Implant-retained denture

Attachments are fitted to implants placed in the jaw, and the denture sits on them. The denture no longer just rests on the gum; it also locks in, and in the lower jaw the movement largely comes to an end. The denture still comes out and goes back in, and the palate or base part of it stays in the mouth.

Fixed teeth on implants

The denture disappears completely; the teeth are screwed onto implants and do not come out of the mouth. The force of chewing passes not over the gum but through the implants into the bone. This is the only option that removes the problem of the base, because it puts load back onto the bone.

What happens when it is put off

We write these down not to frighten you but so that you can ask the right questions whichever dentist you see. If a dentist does not tell you these things of their own accord, ask.

Bone that has shrunk does not come back

Bone that has been lost does not regenerate on its own. Every year spent with a loose denture narrows the options you will discuss later. Shrinkage reduces not only the height of the ridge but also the thickness of the hard outer layer an implant locks into: a fixed solution that could be done directly today may, a few years later, come with fewer implants and a narrower plan.

Pressure sores and a sore that will not heal

A denture that moves keeps rubbing the gum and leaves open sores. Once the edge is corrected, these sores heal within a few days. A sore that lasts longer than three weeks without healing, however, is a finding that needs to be examined regardless of any denture problem; do not leave it.

Fungal inflammation under the denture

The surface of the palate covered by the denture stays moist and airless; in this environment Candida yeast multiplies, and the palate turns red and feels as if it is burning. Sleeping in your denture and not cleaning it well enough feed this directly. Taking the denture out at night, cleaning it and keeping it in water is the most effective precaution.

Tissue overgrowth where the edge rubs

In front of an edge that has rubbed the same spot for years, the gum produces excess tissue like a folded bulge. If this tissue is caught early, it largely shrinks back once the rubbing edge is thinned and the denture relined. A bulge that has been there for years and has hardened, however, does not disappear on its own and has to be removed surgically; as long as the rubbing edge is not corrected, it comes back after the procedure too. In both cases, the bone underneath will already have shrunk.

Your diet quietly changing

Someone who does not trust their denture drops hard and fibrous foods from their menu and slides towards a soft, carbohydrate-heavy diet. Because this change is slow, it goes unnoticed. Changes in weight, digestive problems and tiredness are the result of this narrowing at the table.

Speech and withdrawing socially

An upper denture that lifts distorts some sounds and moves when you laugh. To make up for this, people lower their voice, put a hand to their mouth and avoid eating in company. This is the loss patients mention last but that bothers them most.

What to expect afterwards

The course below applies both to the path that ends with relining the denture and to the path of moving to fixed teeth. Which one you are on becomes clear after the CBCT scan.

If your denture has been relined: the same day
The denture is fitted in your mouth the same day, and you feel the difference in the hold with your first bite. In the first few days a small adjustment is needed to move the pressure spots; we take care of this in a single session. If there are open sores, they heal within a week.
If a new denture has been made: two to three weeks
With a new denture, speech feels different in the first few days and you produce more saliva; this settles within two weeks. During this period, move on to hard foods gradually and come to your check-up appointment for pressure spots.
If you have moved to fixed teeth: three clinical days
In the protocol we use, the implants lock mechanically into the hard basal and cortical layer deep in the jaw. A conventional implant, by contrast, is placed in the upper part that shrinks along with the denture, the alveolar bone, and fusion has to be waited for over months; that is where the difference comes from. Adding bone and months of waiting do not come into it, and at the end of the three clinical days you leave with your final fixed teeth.
The first week and beyond
Some swelling and tenderness is normal and goes down after the third day; if you have stitches, they are removed according to the clinic's follow-up plan. We ask you to eat soft food in the early period. Care is no different from natural teeth: brushing, interdental cleaning and regular check-ups.

Message us right away if

A sore that has not healed in three weeks. A sore that does not heal even though the edge of the denture has been corrected is a finding that needs a separate assessment. Call us without waiting for your appointment.
Redness and burning on the palate. Redness and a burning feeling on the surface covered by the denture point to fungal inflammation. Take the denture out at night and call us; treatment is short.
Hardness or swelling under the denture. A hard bulge on the gum that you can feel with a finger, or swelling that does not go away, should be seen within the same week. Do not keep forcing the denture in.

What determines the cost

We do not give a single figure on this page: with a loose denture, the path may end with relining or it may extend to fixed teeth on implants, and the difference between the two is large. We give you the right figure once we have seen the CBCT scan. Send us your X-ray and we will share the scope with you in writing. These are the items that determine the price:

Which step you are at: Relining, a new denture, an implant-retained denture and fixed teeth are entirely different procedures, with different timescales, materials and numbers of sessions. A figure given before the remaining bone has been assessed is bound to change at the clinic.
One jaw or both: Because a lower denture becomes loose earlier than an upper one, some patients want to sort out only the lower jaw. Planning both jaws together is calculated separately, in terms of both the bite and the cost.
The condition of the remaining bone: The height of the bone determines the number and position of the implants. In the protocol we use, adding bone does not come into it; the shape of the bone, on the other hand, changes the plan itself.
Bridgework: The material and laboratory work of the fixed teeth on the implants have a direct effect on the total. We tell you in writing at the outset which brand of material we use.

Frequently asked questions

My denture is loose. Would having a new one made fix it?

If the bony ridge is still there, yes, a new denture will hold noticeably better. If the ridge has flattened, a new denture goes back onto the same base in newer material and starts to move again a few months later. That is why we make the decision about a new denture by looking at a CBCT scan before taking impressions.

Is there any harm in using adhesive every day?

The real problem is not the product itself but what it hides. Because adhesive fills the gap, the denture feels as if it is holding, while the rubbing and bone shrinkage carry on quietly underneath. If you cannot eat without adhesive, your denture needs not an adjustment but an assessment of the base.

How many years does relining last?

Relining fits the denture to the base as it is that day, and because the bone keeps shrinking, the time gained gets shorter with each repeat. A first relining gives a long period of relief, a second a shorter one, and by the third, what is being discussed is no longer the denture but a decision about the remaining bone.

Do I have to take my denture out at night?

Yes. When the denture covers the palate, the surface underneath stays moist and airless; this environment directly feeds fungal inflammation. Take the denture out at night, brush it and keep it in water or a denture-cleaning solution. If redness and burning start on your palate, do not put it off.

My bone has shrunk a lot, and I was told implants cannot be done for me. Is that definite?

A conventional implant is placed in the upper part that shrinks along with the denture, the alveolar bone; once that has shrunk, bone has to be added first and months of waiting are needed. The strategic implant we use, by contrast, locks mechanically into the deeper, hard basal and cortical layer. That is why adding bone and months of waiting do not come into it. We give you a definite answer once we have seen your CBCT scan.

I have diabetes, and my denture is loose too. What changes for me?

We provide implant treatment for people with diabetes; what matters is not the condition itself but whether your blood sugar is under control. If it is not, healing slows down and sores under the denture take longer to heal. In that case we first ask you to get your levels in order with your doctor.

Will my palate be uncovered once I have fixed teeth?

Yes. With fixed teeth on implants, no base covering the palate is left in the mouth. You taste food and feel its temperature again from the first week, and because there is no part to take out and put in, adhesive stops being an issue altogether.

Sources

Send your X-ray and we will tell you which option is realistic for your tooth.

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Next step

Send your X-ray and we will talk through the options.

Share your CBCT or panoramic X-ray. We will write back within 24 hours on which option is realistic for your tooth.

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