Missing Teeth - in Your Local Area

What To Do With The Broken Denture - Denture Repair

Even though dentures are fabricated from extremely durable materials, they will break, wear out, a tooth will come out, or their fit will change. Then its time for denture repair.

Accidents happen, dogs still like to chew on plates of the dental kind, and trash compacters have never taken kindly to dentures. In fact, it is frequently not a matter of "if," but rather a matter of "when" a denture will become broken, lost, or damaged beyond repair.

One can be assured that a problem will happen when least expected, and immediate, usually important, plans definitely will be altered unless a person is prepared.

Damaged Denture - How to Expect the Unexpected and Be Prepared

A short-term use duplicate denture will bridge the gap while a regular denture is being repaired, renovated, or replaced. Sometimes this type of denture is referred to as an "embarrassment denture" because it helps a person avoid the embarrassment of being without teeth in an emergency or during planned denture maintenance.

While this type of denture may be made at any time from an existing functional denture, it generally is fabricated immediately after a new denture is made. The embarrassment denture is neither as accurate nor as esthetic and durable as the original, but it is adequate and only meant for short-term use. The cost is generally considerably less than the original denture.

Such an interim prosthesis may be relined annually and adjusted in advance to fit the current changing shape of an individual's jaws, and therefore be ready to use at a moment's notice.

However, some individuals choose to have their embarrassment denture relined and adjusted only when they need the short-term denture. Following this latter course means that they will have to wait to wear their interim denture until an appointment can be scheduled with a dentist to complete the reline and any adjustments. But a reline for an embarrassment denture can be done in the dentist's office during a single appointment so a patient may leave with it refitted in the mouth.

In either case, a person would not be without a prosthesis while their regular denture is being worked on.

The Embarrassment Denture Facilitates Planned Periodic Maintenance

All dentures need to be periodically relined to accommodate the constant change in shape of a person's jaws. There are also times when the plastic body of a denture needs to be changed due to deterioration, or the entire denture replaced because of wear or poor fit from changing mouth conditions that can no longer be remedied by relining.

While relines can be completed in one appointment office visit, more durable relines may require that a dentist keep a denture for several days. Replacing the plastic body of a denture (called a rebase) takes several days and making a replacement denture takes several weeks.

It becomes easy to see how an embarrassment denture would solve being without one's regular denture for a period of time, even for planned maintenance, while getting on with one's life.

by Joseph J. Massad, D.D.S.

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.

Are Lower Dentures Always A Problem?

While dentures are marginally adequate substitutes for missing natural teeth, the lower denture can be troublesome for many individuals.

Inherent Lower Denture Problems

• A lower denture interfaces with more movable mouth surfaces than an upper denture.
• The lower denture has less stabilizing surface to rest upon. For example, there is no broad palatal surface (roof of the mouth) as in an upper denture.
• Loss of jawbone over time brings a lower denture into closer contact with tissue extensions called frenum attachments, which create dislodging forces.

While these problems are inherent to lower dentures, every person is different and not affected in the same way. There are ways to approach these problems.

Some Considerations for Improving Lower Denture Stability

A thin band-like tissue extension (called a frenum) may attach between a jaw ridge (called an alveolar ridge) and the inside of the cheek. This strip of tissue may become active while eating or speaking and can lift a denture from its alveolar ridge. This frenum attachment may be surgically moved (this is called a frenectomy).

Alveolar ridge bone profile lessens or literally comes closer to the floor of the mouth as jawbone is lost over time. The bone loss is called resorption. This reduces the vestibule or space between the lip and alveolar ridge. Surgical extension of this vestibule (called vestibuloplasty) provides more alveolar ridge exposure for a denture to rest upon and reduces muscle pull due to a high frenum attachment.

As an alveolar ridge loses bone, it often may be built-up by surgically placing various substances beneath the gum tissue to increase both bulk and height of the ridge. This is called alveolar ridge augmentation.

As a person eats and speaks, the lips and cheeks exert forces towards the inside of the mouth while the tongue exerts an outward counter force. There is a space between the tongue and lips and cheeks, called the neutral zone, where there are balanced forces during function. These opposing forces can help maintain a denture in place, with surprising power, if the denture is fabricated so that its bulk and teeth rest within this space.

Inserting metal implants into the jawbone and fabricating a lower denture to receive and connect with these implants in various ways will help stabilize a lower denture, while still allowing for comfortable and easy removal of the prosthesis for cleaning.

Ensuring that upper and lower teeth contact optimally during function (called balanced occlusion) is a basic means of stabilizing a lower denture. If one tooth strikes on one side only, the denture will rock. Even contact or biting is a necessity. Fabrication of a denture that completely avoids contact with all potentially dislodging structures and has a metal base for strength and some weight often will facilitate stability.

What's the Best Approach?

Frequently, several approaches are combined, and not all may be suitable for a particular patient. After a thorough examination, a licensed dentist can best advise an individual as to the best means of helping stabilize a lower denture in their unique situation.

by Joseph J. Massad, D.D.S.

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.