Why do my dentures not fit like they used to?

Dentures might no longer fit because the bone which used to support teeth and now supports the dentures gradually resorbs over time. People who wear dentures need to clean their dentures regularly. Plaque can build up underneath dentures and cause irritation. Take out your dentures when you sleep. This will decrease the amount of bacteria and fungus growing on them. If allowed to grow thrush, caused by a fungus, may develop.

The reason is that over time, the jaws shrink and the denture stays the same size. This makes the denture loose. When this occurs your dentist can reline, rebase or remake the denture to improve the fit.

Dentures tend to fit more poorly over time because without the roots of teeth in the bone, the jawbones shrink rapidly over time. In fact the jawbones continue to shrink for the rest of your life. Sometimes the denture can be relined and made to fit better; sometimes a new denture will be necessary. If you want the denture to fit the most securely, implants may be an option for you.

If you have an immediate denture, you may need to have the denture relined or remade after your jaw has healed. An immediate denture is a removable denture that is inserted on the same day that the remaining teeth are removed. Your dentist will take measurements and make models of your jaw during a preliminary visit. This enables you not to be without teeth during the healing period. Follow-up appointments with the dentist are generally needed after a denture is inserted so the fit can be checked and adjusted.

When dentures have been worn for a while, the patient may notice changes in the fit, bite, comfort and tightness of the teeth. This is because the supporting ridges can shrink with time causing the denture to no longer be well adapted to your gums and teeth can wear and chip affecting your bite, facial profile, TMJ and overall fit and appearance of your dentures. In addition there can be inflammatory tissue that has developed that prevents the denture(s) from seating properly in the mouth.

Unfortunately, even though someone wears dentures, does not mean that they do not require regular annual dental exams, denture evaluations and examinations of the oral mucosa. Everything changes and treatment may be absolutely necessary for your health, function, comfort and appearance.

Continue Learning about Common Dental Procedures

What are the advantages of dental veneers?
The advantages of dental veneers -- very thin shells of porcelain or resin bonded to the front o...
More Answers
What can cause my face to burn in pain after dental work?
Jeffrey A. Brown, MDJeffrey A. Brown, MD
Dental work or nasal surgery can spark or “kindle” a unique kind of pain that comes from the nerve t...
More Answers
How durable are the materials used in dental restorations?
American Dental AssociationAmerican Dental Association
Materials used in dental restorations have varying degrees of durability:All-porcelain (ceramic): Br...
More Answers
Is dental root amputation always successful?
Dental root amputation, also known as root resection, is not always successful. The tooth may cr...
More Answers

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.