When braces are finally removed, the “retention” phase begins for most individuals. 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 acrylic and thin wires to optimize the comfort of the patient.
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Retainers are worn for varying amounts of time, depending on the type of orthodontic treatment and the age of the patient. Perseverance and commitment are required to make this final stage of treatment successful. If the retainer is not worn as directed by the orthodontist, treatment results can relapse.
What types of retainer are available?
There are a variety of retainers available; each one geared towards treating a different kind of dental problem. The orthodontist will make a retainer recommendation depending on the nature of the original diagnosis and the orthodontic treatment plan.
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. The acrylic arch is designed to fit comfortably on the palate of the upper jaw or tongue side of the lower jaw.
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. They also cover the teeth and are in the way when the patient closes.
Fixed retainers – A fixed retainer is usually affixed to the tongue side of a few teeth. It usually consists of a single wire. It is usually very effective in retaining the teeth. When placed in the lower arch, it is usually left in indefinitely to prevent relapse of crowding and to prevent late onset crowding, which is a natural aging process that occurs in approximately 50% of people.
What do I need to consider when using a retainer?
There are a few basic things 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 because a replacement must be created. A brightly colored case serves as a great reminder.
Don’t drink liquids other than water while wearing a vacuum formed retainer– It is tempting to drink while wearing that type of 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 vacuum formed retainer– It can be difficult and awkward to eat while wearing a VFR retainer and it can also damage the device. When worn on the upper and lower arches simultaneously, VFR retainers do not allow the teeth to meet. This means that chewing is almost impossible.
Clean the retainer properly– Removable retainers can become breeding grounds for 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.
Wear the retainer as directed– This phase of treatment is critical. The hard work has been done, the braces are off and now it is tempting not to wear the retainer as often as the orthodontist recommends. Retainers are needed to give the muscles, tissues and bones time to stabilize the teeth in their new alignment. Failure to wear the retainer as directed can have regrettable consequences, such as teeth returning to their original position, added expense and lost time.
If you have any questions or concerns about retainers, please contact our office.