By the Lakehurst Dental Team · Medically reviewed by Brian S. Klohn, DMD, University of Pennsylvania School of Dental Medicine, 1991 · Lakehurst Dental, 19 Union Avenue, Lakehurst, NJ
Quick Answer
Dentures rest on gum and bone, and that bone continues to resorb after teeth are lost — which is why a denture that fitted well eventually becomes loose. The denture has not changed shape; the ridge supporting it has. The fix is a reline, which resurfaces the fitting side to match the new ridge, and it is a normal part of denture ownership rather than a sign anything went wrong. Never adjust a denture yourself, and never repair one with household glue. Sore spots are common in the first weeks, are usually solved by a small adjustment, and should not simply be endured.
What This Article Covers
- Why the Fit Changes — This Is the Key Idea
- Relines, Rebases and Remakes
- Sore Spots: Common, Fixable, and Not to Be Endured
- Cleaning: the Part That Protects Your Health
- Eating and Speaking Again
- On Denture Adhesive
- Keeping Check-Ups When You Have No Teeth
- Frequently Asked Questions
Why the Fit Changes — This Is the Key Idea
Almost every frustration with dentures traces back to one biological fact.
The bone of the jaw ridge exists because tooth roots stimulate it. When teeth are removed, that stimulus disappears and the bone gradually resorbs — it shrinks and changes shape. This happens fastest in the first months after extractions and continues, more slowly, for years afterwards.
A denture is a rigid object resting on a changing surface. It was made to match the ridge as it was on the day the impression was taken. As the ridge flattens and narrows beneath it, the denture no longer sits against the tissue evenly. It rocks, it loosens, and it presses hard in some places while sitting loose in others.
This is why “my denture stopped fitting” is almost never a fault in the denture. Understanding that changes how people respond to it — from assuming they were given a bad appliance to recognising a predictable maintenance need.
Relines, Rebases and Remakes
| Procedure | What it does | When |
|---|---|---|
| Adjustment | Small amount of material removed from a spot that is rubbing | Sore spots, usually in the first weeks |
| Reline | New material added to the fitting surface to match the current ridge; teeth unchanged | Denture has loosened but teeth and bite are still good |
| Rebase | The entire pink base is replaced, keeping the existing teeth | Base is damaged or discoloured but the teeth are fine |
| Remake | A completely new denture | Teeth are worn down, the bite has collapsed, or the ridge has changed too much to reline |
A reline can be done with a hard material, which is durable and standard, or a soft material for someone with a thin, flat or tender ridge where cushioning is needed. Soft liners are more comfortable in those cases and need replacing more often.
Immediate dentures — those fitted on the day teeth are extracted — will always need relining, usually within the first months, because that is the period of most rapid bone change. This is planned from the outset rather than being an unwelcome surprise, and it is worth knowing before you start.
A denture that has been relined repeatedly over many years will eventually reach the point where a remake is more sensible. Worn denture teeth also reduce chewing efficiency and let the bite close further than it should, which affects facial appearance and can strain the jaw joint.
Sore Spots: Common, Fixable, and Not to Be Endured
Sore spots in the first weeks of a new denture are normal. The tissue is adapting to something it has not carried before, and small high points are almost inevitable.
What is not normal is putting up with them for months.
What to do:
- Call for an adjustment. It usually takes a few minutes: the sore area is identified, and a small amount of material is relieved.
- Wear the denture for a few hours before your adjustment appointment, even if it is uncomfortable. The dentist needs to see where the tissue is actually being pressed. Arriving with the denture in your pocket and a healed mouth makes the spot much harder to find.
- Warm salt water rinses in the meantime.
- Never file, sand or trim it yourself. Removing material from the wrong place permanently ruins the fit, and turns a five-minute adjustment into a remake.
Call sooner rather than later if a sore area does not heal within about two weeks after the denture has been adjusted, if there is a lump, a white or red patch that does not resolve, or bleeding. Persistent ulceration in one spot needs looking at rather than assuming it is just the denture.
Cleaning: the Part That Protects Your Health
Dentures accumulate plaque and calculus exactly as teeth do, and the acrylic surface is porous enough to harbour bacteria and fungi.
- Rinse after eating.
- Brush daily with a denture brush and either a denture cleaner or mild soap. Do not use ordinary toothpaste — it is abrasive and creates fine scratches in acrylic where bacteria lodge.
- Brush over a folded towel or a basin of water. Dentures shatter readily on a hard surface, and this simple habit prevents a great many breakages.
- Soak as directed. Soaking solutions help remove staining and reduce microbial load. Rinse thoroughly before putting the denture back in.
- Never use hot or boiling water, bleach on a denture with metal parts, or abrasive household cleaners. Heat warps acrylic permanently.
- Clean your mouth too. Brush the gums, tongue and palate with a soft brush every day. This stimulates the tissue and reduces the risk of fungal infection — and it is the step most often skipped by people with full dentures, who assume that having no teeth means nothing to brush.
Take them out at night unless you have specifically been told otherwise. Continuous wear is a leading contributor to denture stomatitis — a fungal inflammation of the tissue underneath, which appears as redness on the palate and often causes no pain at all. The tissue needs time uncovered. Store them in water or a soaking solution so they do not dry out and distort.
Eating and Speaking Again
Both improve with practice, and knowing the sequence prevents people concluding too early that it will not work.
Eating. Start with soft food cut small. Chew on both sides at once — this is the counterintuitive part, because chewing on one side tips a full denture and unseats it. Take smaller bites. Be careful with very hot food and drink initially, since a denture covering the palate reduces temperature sensation and burns are easy. Sticky and very hard foods stay difficult; biting into a whole apple with a full upper denture is generally not realistic.
Speaking. Certain sounds, particularly s and f, are commonly affected at first. Reading aloud for a few minutes a day is genuinely the fastest way to adapt, because it forces the tongue to relearn positions deliberately. Most people find speech normalises within a few weeks.
Clicking usually means the denture is moving slightly. Speaking a little more slowly helps at first; persistent clicking suggests the fit needs checking.
Increased saliva in the first days is normal — the mouth is treating the denture as something to be dealt with. It settles.
On Denture Adhesive
Adhesive has a legitimate role and is also frequently used to paper over a problem.
Reasonable use: a thin application for added confidence and security, particularly with a lower denture, which is inherently less stable because there is far less ridge and the tongue works against it.
What it should not be: a substitute for a fit that has failed. If you need progressively more adhesive, or you are using it to stop a denture rocking, the denture needs relining. Adhesive holding a badly fitting denture against the ridge concentrates pressure unevenly and can accelerate bone loss in the areas being pressed.
Use a small amount, follow the product directions, and clean it off completely each night — both from the denture and from your gums.
Keeping Check-Ups When You Have No Teeth
A common and understandable assumption is that dentures mean no more dental visits. It is worth pushing back on directly.
Annual examination remains important for several reasons that have nothing to do with cavities:
- Oral cancer screening. This is the most important one. Denture wearers are frequently older, and the tissues under a denture need examining. A denture can also conceal an area from view.
- Checking fit and bite, before a poor fit causes sore spots or accelerates ridge loss.
- Assessing the ridge and soft tissue for inflammation, fungal infection or areas of overgrowth.
- Checking any remaining natural teeth in a partial denture — those teeth carry extra load and are at higher risk of decay and gum disease around the clasps.
- Professional denture cleaning to remove calculus that home cleaning cannot.
Our dentures page covers the types available, and implant-supported options are worth asking about if a lower denture has never been stable — even two implants can transform retention.
Frequently Asked Questions
Almost always because the bone ridge underneath has changed rather than because the denture has. Jawbone is maintained by the stimulation of tooth roots, and once teeth are gone it gradually resorbs, shrinking and flattening. The denture was made to match the ridge as it was at the time, so as the ridge changes the denture no longer sits evenly. The solution is a reline, which resurfaces the fitting side to match the current shape.
A reline adds new material to the fitting surface of an existing denture so it matches the current shape of your gum ridge. The teeth and the overall appearance stay the same — only the tissue-facing side is resurfaced. It can be done with hard material, which is standard and durable, or soft material for a thin or tender ridge that needs cushioning. It is normal, expected maintenance rather than a sign anything went wrong.
Yes, unless you have specifically been advised otherwise. Wearing dentures continuously is a leading contributor to denture stomatitis, a fungal inflammation of the tissue underneath that shows as redness on the palate and frequently causes no pain. The tissue needs time uncovered to recover. Store them in water or a soaking solution overnight so the acrylic does not dry out and distort, and brush your gums, tongue and palate before bed.
No. Ordinary toothpaste is abrasive and creates fine scratches in the acrylic surface, and those scratches give bacteria and fungi somewhere to lodge. Use a denture brush with a denture cleaner or mild soap instead, and soak as directed. Brush over a folded towel or a basin of water, since dentures break easily when dropped on a hard surface. Never use hot water, which warps acrylic permanently, or abrasive household cleaners.
Some soreness in the first weeks is normal as the tissue adapts, but it should be resolved by adjustment rather than endured. Call for an adjustment, and wear the denture for a few hours beforehand even if it is uncomfortable, so the dentist can see exactly where the pressure is. Never file or trim it yourself. If a sore area has not healed within about two weeks after adjustment, or there is a lump or a patch that does not resolve, have it looked at.
Not in itself. A thin application for added security is reasonable, especially with lower dentures which are inherently less stable. What it should not be is a substitute for a fit that has failed. If you need progressively more adhesive, or you are using it to stop a denture rocking, the denture needs relining — adhesive holding a poorly fitting denture in place concentrates pressure unevenly and can accelerate bone loss beneath it.
Yes, annually at minimum. The most important reason is oral cancer screening, since the tissues beneath a denture need examining and a denture can hide areas from view. Visits also allow the fit and bite to be checked before problems develop, the ridge and soft tissue to be assessed for inflammation or fungal infection, any remaining natural teeth in a partial denture to be checked, and the denture itself to be professionally cleaned of deposits home cleaning cannot remove.
Speak With a Dentist in Lakehurst
If your denture has become loose, rubs, or clicks when you speak, an adjustment or reline is usually straightforward. Lakehurst Dental has cared for families in Lakehurst, Toms River and across Ocean and Monmouth counties for more than 34 years. To ask a question or arrange a consultation, call (732) 943-4090 or contact our office.
This article is general information and is not a substitute for an examination and personal advice from your dentist.