![]() Each aligner is worn for 22 hours a day for one or two weeks. The computerized model suggests stages between the current and desired teeth positions, and aligners are created for each stage. Ĭlear-aligner treatment involves an orthodontist or dentist, or with home-based systems, the person themselves, taking a mold of the patient's teeth, which is used to create a digital tooth scan. They are also indicated for patients who have experienced a relapse after fixed orthodontic treatment. In particular they are indicated for "mild to moderate crowding (1–6 mm) and mild to moderate spacing (1–6 mm)", in cases where there are no discrepancies of the jawbone. Experience suggests they are effective for moderate crowding of the front teeth, but less effective than conventional braces for several other issues and are not recommended for children. A 2014 systematic review concluded that published studies were of insufficient quality to determine effectiveness. ![]() ![]() ![]() ![]() Ĭlear aligners have undergone changes, making assessment of effectiveness difficult. Clear aligners are orthodontic devices that are a transparent, plastic form of dental braces used to adjust teeth. ![]()
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