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Learn About Conventional Over-Denture

A conventional over-denture rests over some healthy natural tooth roots. This approach was first reported in 1861. To understand this method, it is necessary to review some facts.

An Overview of Alveolar Ridge Dynamics

• Maintaining a denture on the jawbone ridge (called alveolar ridge) is essential to prevent it from becoming loose during eating, speaking, and other activities.
• Preserving the alveolar ridge facilitates denture stability.
• The body tends to conserve energy and nutrients by maintaining only structures with apparent immediate value. A typical example is the bulk reduction of a broken leg held immobile by a full-leg cast for a month or more.
• The body recognizes that the only one purpose for alveolar bone is to hold tooth roots.
• Alveolar bone no longer supporting a tooth root is removed, or literally dissolved away, by the body. This is called resorption, or simply shrinkage.
• Resorption progresses at varying rates in the same person at different times, and at different rates between different people. Resorption progresses rapidly within the first year of losing a tooth, after which time, the rate progresses at a slower pace.

From this overview, if the maximum amount of alveolar ridge is to be maintained, then preserving the maximum number of periodontally healthy tooth roots should achieve that end.

Preserving the Sensation of Having Teeth

Studies demonstrate that even though only roots are preserved, and a denture covers them, a patient still has sensory input sensations similar to that experienced with teeth, as opposed to individuals with conventional dentures and no preserved roots. Over-denture patients also appear to have a more natural perceived directional sense in their chewing activities. In other words, many patients relate that they still feel like they have teeth -- a positive comment.

Underlying Philosophy of the Conventional Over-Denture

If a patient's treatment plan to have a denture, and the roots of some remaining teeth are supported in healthy alveolar bone, then a conventional over-denture is a viable consideration.

However, only a licensed dentist can determine if a conventional over-denture is a suitable consideration for a certain person, after a comprehensive examination.

Some Characteristics of a Conventional Over-Denture

• Most of a tooth crown (that part of the tooth above the gums) is removed. This often necessitates root canal therapy if not already done.
• The remaining tooth, projecting above the gum, is rounded and usually covered with a similarly shaped artificial crown-like covering.
• Various configurations and extensions may be built onto some retained roots. In those cases, that portion of the denture overlying these configurations is modified to contain attachments that clip onto a framework or receive the individual extensions. In addition to preserving alveolar bone and sensory input, the denture is held securely in place, but may be comfortably and easily removed for cleaning.

Advantages of a Conventional Over-Denture

• Feels more like having teeth
• More retentive in many cases
• Helps reduce shrinkage of surrounding bone
• Reduces pressure to portions of the alveolar ridge
• Positive psychological advantage of still having teeth

Disadvantages of a Conventional Over-Denture

• Scrupulous oral hygiene is essential in order to prevent decay and gum disease
• The over-denture may feel bulkier than a conventional denture
• Frequent maintenance examinations are necessary
• Generally, this is a more expensive approach than a conventional denture

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.

FAQ Dental Information - Denture and False Teeth

Q. How do you clean your dentures?

A. When cleaning your dentures, you should first rinse away loose food particles thoroughly. Then moisten your toothbrush and apply denture cleanser. Brush every surface, scrubbing gently to avoid damage.

Q. How many times a day does the denture need to be cleaned?

A. The denture needs to be cleaned two to three times daily.

Q. What is good oral hygiene when you have full dentures?

A. In addition to taking care of your dentures, taking care of your mouth also is vital if you wear full dentures. This includes brushing your gums, tongue, and palate every morning with a soft-bristled brush before inserting your dentures. This stimulates your tissues and helps remove plaque.

Q. Do dentures need to be replaced?

A. Dentures will need to be relined, remade, or rebased due to normal wear over a period of time and normal shrinkage of your gums and bones.

Q. What should you do if your dentures crack or break?

A. Call your dentist immediately. Normally, dentures can be repaired quickly, often on the same day. Damaged dentures can cause additional oral health problems, so see your dentist right away. Never attempt to repair dentures yourself. They require professional repair and adjustment.

Q. Why can't you fix dentures that break with glue?

A. Glues often contain harmful chemicals and are not effective in the proper repair of dentures.

Q. What are partial dentures?

A. Partial dentures are dentures that replace only a few missing teeth.

Q. How do you wear a removable partial denture?

A. Removable partial dentures are attached to your natural teeth with metal clasps or devices called precision attachments.

Q. How long will it take to get used to wearing a partial denture?

A. Your partial denture may feel awkward or bulky for the first few weeks, but your mouth will eventually get used to it.

Q. How long should you wear a partial denture?

A. Initially, you may want to wear your partial denture all the time. Your dentist will give you specific instructions on how long it should be worn and when it should be removed. Generally, your mouth tissues need to rest so it is advisable that you take out your partial denture at least 15 minutes per day.

Q. Will the partial denture change the way you speak?

A. Your partial denture may help your speech. It can be difficult to speak clearly when you are missing teeth. However, it also will take time to get used to it.

+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.