What helps sore spots from dentures?

Why a sore spot will not heal on its own

A denture sore spot is a small ulcer where a specific point on the acrylic presses harder than the tissue around it can tolerate. The tissue tries to heal, the denture goes back in, and the same point loads it again. It is a mechanical loop, and it does not break by waiting.

That is why the fix is physical. The dentist marks the pressure point with an indicator paste or a marking material, relieves that spot on the denture with a bur, and polishes it smooth. The relief itself is usually immediate; the ulcer then heals in a few days.

It also explains a pattern that catches people out: once one spot is relieved, the denture settles slightly differently and the next highest point becomes the new sore spot. Two to four rounds of this is a normal course for a new denture, not a sign anything is wrong.

What actually helps between now and the appointment

None of these fix the cause. They make the wait tolerable and keep the ulcer from getting bigger.

• Take the denture out between meals to unload the tissue
• Rinse gently with warm salt water, roughly half a teaspoon of salt in eight ounces of warm water
• Eat soft food and cut it small so you chew with less force
• Chew on both sides at once so pressure is balanced rather than concentrated
• Leave the denture out overnight, stored in cool water, unless you are in the first 24 hours after extractions
• Put the denture back in for a few hours on the morning of your appointment so the dentist can see the spot

Why not to fix it yourself

This is one of the few areas where the ADA states the risk plainly: you can do serious harm to your denture and to your health by trying to adjust or repair it yourself, do it yourself kits can damage the appliance beyond repair, and over the counter glues often contain chemicals that should not be used on a denture.

The specific problems are worth spelling out. Filing removes material you cannot put back, and it is very easy to take away the wrong area because the spot that hurts on your gum is often not where the denture is actually high. Home reline kits set hard inside the denture, change the fit permanently in ways that are difficult to reverse, and can trap the denture over undercuts. Glue can make a fractured denture unrepairable, so the cheap fix turns into a new denture.

There is also a diagnostic cost. A denture you have modified is harder for the dentist to read, because the marks that would show where the pressure is are now sitting on a surface you changed.

Sore spots that are not sore spots

Not every painful area under a denture is a pressure point. Generalized burning or redness across the whole area covered by the plate can be denture stomatitis, a yeast related inflammation that is common in denture wearers and more likely with overnight wear and poor denture cleaning. It is treated by improving denture hygiene and, sometimes, with antifungal treatment prescribed by your dentist or doctor.

Cracks and soreness at the corners of the mouth can accompany the same picture, or can point to a bite that has closed down too far as the ridge has shrunk.

The rule that covers all of them is simple: any sore in the mouth that has not healed after two weeks should be looked at by a dentist, regardless of how obvious the denture explanation seems.

Related questions