A widening plate or RPE is a phase 1 treatment appliance used under the roof of a patient’s mouth to help widen the upper jaw and teeth. If the appliance becomes loose, it may be more urgent to see the orthodontist, since the appliance may become quite uncomfortable for the patient. Also, if the appliance is not in its proper position, or if it falls out completely, the correction that has already been achieved may be lost. It would be best to call the office and follow Dr Semaan’s recommendations.
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