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This is really two removable appliances, to be worn on the upper and lower teeth at the same time.
A functional appliance is quite a chunky brace, and is usually taken out for eating as well as sport. Care should be taken not to put functional appliances on the table in restaurants, as experience shows that waiters can be very efficient at clearing them into bins.
If this happens, the cost of a replacement may well be more than the cost of the meal.
Functional appliances often form just part of a longer course of treatment including fixed braces.
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For further information:>
www.bdasmile.org
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