In dentistry, a Quad Helix is an orthodontic appliance for the upper teeth that is cemented in the mouth. It is attached to the molars by two bands and has four active helix springs that widen the arch of the mouth to make room for crowded teeth, or correct a posterior cross-bite. Cross-bites are where the upper teeth fit inside the lower teeth. The device is checked periodically to be sure that the wires do not impinge on the gum tissue as expansion progresses.

Note: The definitions on our web site are for reference purposes only and in no way represent any official dental advice. If you are experiencing any symptom defined by a term, you should seek the advice of your dental practitioner.

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