What happens when your dentures crack, break, or stop fitting
Dentures rarely last forever without repair. A crack in the acrylic base, a broken tooth, or a loose clasp can happen from dropping them, grinding at night, or straightforward years of wear. When damage occurs, you have three paths: repair the existing denture, reline it to restore fit, or replace it entirely. The choice depends on the damage, the age of the denture, and whether the underlying bone has changed shape.
Most repairs take a few days to a week. Relines take longer because they require a new mold of your mouth. Full replacement is the most expensive option but may be necessary if the denture is old, warped, or damaged in multiple places.
Key Takeaways
- A denture repair fixes cracks, broken teeth, or loose clasps and usually costs less than a reline or replacement.
- A reline reshapes the base to fit your mouth again after bone loss and is needed every few years for most people wearing dentures.
- Temporary relines use soft material and last a few months; permanent relines use hard acrylic and last several years.
- Replacement is necessary if the denture is warped, severely damaged, or so old that repairs no longer hold.
- Your dentist or denturist can assess the damage and recommend the most cost-effective path forward.
Denture repair: fixing cracks, breaks, and clasps
A repair addresses a specific problem—a crack in the base, a broken artificial tooth, a loose or broken clasp, or a chip on the edge. Your dentist or denturist removes the denture, cleans it, and fixes the damage using acrylic resin, replacement teeth, or new clasps. Most repairs are done in the office or sent to a lab and returned within a few days.
Repairs are the least expensive option and make sense when the denture otherwise fits well and the damage is isolated. However, if the denture has been repaired multiple times, or if the break is in a load-bearing area (like where the clasp attaches), a reline or replacement may be more durable in the long run.
If your denture breaks on a weekend or holiday and you need it urgently, some dental offices offer same-day or next-day repair. Ask your dentist whether they have an emergency line or a relationship with an after-hours lab.
Relines: restoring fit when your mouth changes shape
A reline is not a repair—it is a reshaping of the base of the denture to match your mouth again. After you lose teeth, your jawbone shrinks over time. This happens fastest in the first year after tooth loss, then more slowly for years afterward. As the bone shrinks, your denture becomes loose, rocks when you chew, or causes sore spots. A reline fills in the space between the old denture base and your new bone shape.
There are two types of relines. A temporary reline uses a soft material (usually a silicone-based compound) that is applied to the inside of the denture in the office. It lasts a few months and costs less than a permanent reline. Temporary relines are often done right after tooth extraction, when bone is still changing rapidly, or as a bridge while you wait for a permanent reline.
A permanent reline uses hard acrylic resin and requires a new mold of your mouth. Your dentist takes an impression, sends the denture to a lab, and the lab bonds new acrylic to the base. Permanent relines last several years and feel more natural than temporary ones. Most people wearing dentures need a permanent reline every two to three years, though the timeline varies.
When to replace your denture instead of repair or reline
Replacement makes sense when the denture is old, warped, or damaged beyond practical repair. If the base is cracked in multiple places, the teeth are severely worn down, or the denture has been relined so many times that the base is thin and fragile, replacement is often more cost-effective than continuing to patch it.
Warping is common in older dentures, especially if they have been soaked in hot water or left in the sun. A warped denture cannot be straightened and will not fit properly no matter how many times it is relined. If your denture rocks, causes pain even after adjustment, or looks visibly bent, ask your dentist whether replacement is the better choice.
Age alone is not a reason to replace a denture. Some dentures last 10 years or more with regular care and relines. Others need replacement after 5 years because of damage or wear. Your dentist can tell you whether your denture is worth maintaining or whether the cost of ongoing repairs and relines is approaching the cost of a new one.
Cost and timeline for repairs, relines, and replacement
Costs vary widely by location, the complexity of the work, and whether you see a dentist or a denturist. A straightforward repair (like replacing a broken tooth or fixing a clasp) typically costs less than a reline. A temporary reline costs less than a permanent one. A full replacement is the most expensive option.
Timeline also varies. A repair may be done in a few days if the lab is not backed up. A temporary reline can often be done in one office visit. A permanent reline requires an impression, a lab send-out, and a second appointment to fit the relined denture—usually one to two weeks total. A replacement denture requires multiple appointments for impressions, bite registration, and try-in before the final denture is made—typically four to six weeks.
Ask your dentist or denturist for an estimate before proceeding. Some offices offer payment plans or discounts if you pay in full upfront. If cost is a barrier, a temporary reline or repair may buy you time to save for a replacement.
How to prevent denture damage and extend the life of your denture
Most denture damage comes from dropping them, soaking them in hot water, or grinding at night. Store your denture in a denture cup with cool water or a denture-soaking solution when you are not wearing it. Never use hot water, which can warp the acrylic. If you grind your teeth at night, ask your dentist about a night guard to protect your denture from stress.
Handle your denture over a sink or a soft towel so that if you drop it, it does not hit a hard floor. Clean it gently with a soft brush and denture paste—never use toothpaste, which is too abrasive. Avoid bleach unless your denture is all acrylic (some dentures have metal clasps that bleach can damage).
See your dentist or denturist for a reline every two to three years, or sooner if you notice the denture is loose or rocking. Regular relines prevent the bone loss from becoming so severe that the denture no longer fits, which can force you into an unexpected replacement.
Denturist versus dentist: who does denture work
Both dentists and denturists can repair, reline, and replace dentures. A denturist is a specialist trained specifically in denture work and may charge less than a dentist for denture services. A dentist can do denture work but may refer complex cases to a denturist or lab.
If you are new to dentures or have complex needs (like dentures that must work with remaining natural teeth or dental implants), a dentist may be the better choice because they can see the whole picture. If you straightforward need a reline or repair on an existing denture, a denturist is often faster and less expensive.
Denturists are regulated by state or province, and their scope of practice varies by location. In some places, denturists can do almost everything a dentist can do with dentures. In others, their scope is more limited. Ask your dentist or call your state dental board if you are unsure whether a denturist can do the work you need.
Frequently Asked Questions
Can a cracked denture be repaired, or does it need to be replaced?
Most cracks can be repaired by a dentist or denturist using acrylic resin. However, if the crack is large, in a load-bearing area, or if the denture has been repaired multiple times, replacement may be more durable. Your dentist can assess the crack and recommend the best option.
How long does a denture reline take?
A temporary reline can be done in one office visit, usually 30 minutes to an hour. A permanent reline requires an impression, a lab send-out, and a second appointment—typically one to two weeks total. Ask your dentist for a timeline when you schedule.
What is the difference between a temporary and permanent reline?
A temporary reline uses soft material and lasts a few months; it is often done right after tooth extraction when bone is still changing. A permanent reline uses hard acrylic, lasts several years, and requires a new mold of your mouth. Permanent relines feel more natural and are more durable.
Can I repair my denture myself at home?
Home repair kits exist but are not recommended. They often do not hold, can damage the denture further, and may create an uneven surface that causes sore spots. A professional repair is faster, stronger, and usually not much more expensive than a kit.
How often do dentures need to be relined?
Most people need a permanent reline every two to three years because bone continues to shrink over time. You may need a temporary reline sooner if you notice the denture is loose or rocking. Your dentist can tell you when a reline is needed based on how your mouth has changed.