Denture Rebases & Relines

Denture Rebases
After a new denture has been inserted, it ought to retain in the mouth quite nicely due to the fact that the shape of the inside of the denture base conforms closely to the shape of the gums. Unfortunately, the longer you wear the denture, the more your gums change underneath it, and the looser it gets. In order to restore the retentive qualities of the denture, and to prevent the production of flabby gum tissue under it, you should have the denture professionally relined at least every two to three years. Loss of suction and increased food particals collecting underneath is a good sign you may need to reline/rebase your denture.

There are actually four types of denture relines: Hard, Rebase/Jump, Soft and Temporary.

Hard Reline
This is the kind of reline that should be done on all full dentures every two years. The dentist removes some of the plastic from the inside of the denture, and then fills the denture with a soft material (think of soft putty) which, when replaced in the mouth, conforms to the contours of the tissues, and then hardens to a rubbery consistency. When the denture is removed, the denture now contains an accurate impression of the shape of the gums. The denture is sent to the lab, and the impression material is replaced with pink, hard acrylic in exactly the same shape as the original impression material. When returned, the denture now conforms to the contours of your mouth and should make maximum contact with the tissues producing maximum suction. In our office, the impression is scheduled for first thing in the morning. The patient goes home without the denture, but returns later the same day (usually early afternoon) for the insert (fitting appointment).

Rebasing (JUMP) Denture
Rebasing a denture (or jump) is similar to a reline except the denture comes back not only relined, but with ALL the pink plastic replaced. The only parts of the old denture that remain after a rebase are the teeth.
A rebase is often done when the denture has multiple cracks or repairs and does not fit well, but the teeth themselves are still in good condition and fit correctly with the teeth in the opposite arch. You don't get a new denture with a rebase, since a new denture would be built to replace lost facial dimension, but you will end up with a revitalized/rebuilt old denture.

Rebases are done the same way that relines are done. The dentist takes an impression inside the old denture, and sends it to the lab. One difference, however, is that jump cases generally take two days in-lab rather than the same day service you can expect with a reline. We at Arizona Dental Service have an In HOUSE Commercial Laboratory and can sometimes do a REBASE the same day depending on current work load. (Example: 9:00 am start with a 4:00pm delivery)

Soft Reline
Occasionally, a patient finds that he cannot wear the denture because his gums are too tender, and he keeps getting sore spots. In cases where the patient is unable to wear ordinary dentures because of tender gums, the denture can be relined with a material that remains pliable for 2 to 5 years before it needs replacement. The consistency of this material is like soft rubber, and is generally less likely to give the patient sore spots than ordinary pink acrylic.Patients have said it feels like wearing a pillow in comparison to a hard denture.

Temporary Relines (Therapeutic relines)
Frequently, by the time a patient with an old denture finally shows up at the dentist's office looking for a new denture, the dentures have not been serviced for such a long time that the gums are in terrible condition. They may be red, swollen and quite misshapen. Relining the old denture, or building a new one using impressions taken while the gums are in such poor condition would lead to a denture that would simply perpetuate the problem with the new appliance.

When faced with situations like this, Arizona Dental Service will frequently use a temporary, or palliative (medicated) reline material to allow the inflammation to subside. This reline makes the denture fit much more tightly, and is usually soft and pliable. It will not last more than a few months, but the patient wears it for a few weeks until the gums return to a more normal state. After this happens, then the patient is ready for his new denture or hard reline. This technique is also used for Immediate dentures where a patient may have frequent sore spots after recently having teeth extracted, this helps the patient to wear the denture and helps to promote faster healing.





Arizona Dental Service, Inc.
1629 E. University Drive
Mesa, Arizona 85203
(480) 835-1536
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Office Hours: Monday - Thursday 8:00AM - 5:00PM, Closed Fridays, Saturday by Appointment

Serving dental patients the Mesa, AZ area, including Apache Junction, Chandler, Gilbert & Fountain Hills.



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