Orthodontic Retainers

When braces are finally removed, the \"retention\" phase begins.

The objective of this phase is to ensure the teeth do not regress back to their previous position. A retainer will be used to maintain the improved position of the teeth. A retainer is a fixed or removable dental appliance which has been custom-made by the orthodontist to fit the teeth. Retainers are generally made from transparent plastic and thin wires to optimize the comfort of the patient.

Retainers are worn for varying amounts of time, depending on the type of treatment and the age of the patient. If the retainer is not worn as directed, treatment can fail or take much longer than anticipated.

What types of retainer are available?

The following are some of the most common types of retainers:

• Hawley retainer – The Hawley retainer consists of a metal wire on an acrylic arch. The metal wire may be periodically adjusted by the orthodontist to ensure the teeth stay in the desired position.
• Essix – The Essix retainer is the most commonly used vacuum formed retainer (VFR). A mold is initially made of the teeth in their new alignment, and then clear PVC trays are created to fit over the arch in its entirety. VFR's are much cheaper than many other types of retainers and also do not affect the aesthetic appearance of the smile in the same way as the Hawley retainer. The disadvantage of VFR's is that they break and scratch more easily than other types of retainers.
• Fixed retainers – A fixed retainer is somewhat similar to a lingual brace in that it is affixed to the tongue side of a few teeth. Usually, a fixed retainer is used in cases where there has been either rapid or substantial movement of the teeth. It usually consists of a single wire. The inclination of the teeth to move rapidly means they are also more likely to regress back to their previous position if a fixed retainer is not placed.

Maintaining your retainer:

There are a few basics to consider for proper use and maintenance of your retainer:

Don't lose the appliance – Removable retainers are very easy to lose. It is advisable to place your retainer in the case it came in while eating, drinking and brushing. Leaving a retainer folded in a napkin at a restaurant or in a public restroom can be very costly if lost. A brightly colored case serves as a great reminder.

Don't drink while wearing a retainer – It is tempting to drink while wearing a retainer because of the unobtrusive nature of the device. However, excess liquid trapped under the trays can vastly intensify acid exposure to teeth, increasing the probability of tooth decay.

Don't eat while wearing a retainer – It can be difficult and awkward to eat while wearing a removable retainer and it can also damage the device. Food can get trapped around a Hawley retainer wire or underneath the palate, causing bad breath.

Clean the retainer properly – Removable retainers can become breeding grounds for calculus and bacteria. It is essential to clean the inside and outside thoroughly as often as possible. Hawley retainers can be cleaned with a toothbrush. Because harsh bristles can damage the PVC surface of a VFR, denture cleaner or a specialized retainer cleaner is recommended for this type of device.