Retainers and Other Orthodontic Appliances: Correcting Teeth, Jaw and Sleep Problems
“Orthodontics — the dental specialty focused on correction and prevention of crooked teeth, spacing problems and malocclusion (bad bite) — often is necessary to improve the stability, function, health and esthetics of your smile. Orthodontic appliances, such as braces and retainers, straighten teeth and correct jaw alignment, as well as prevent or alleviate certain sleep-related complications.”
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As stated in the article retainers can help keep your teeth straight without having to wear braces. They are very useful for many ways and are often times removable so that you can wear them as needed.