Teeth move when pressure is placed upon them. It doesn't matter if that pressure comes from metal braces, clear braces, aligners, or even fingers in the mouth. The process of moving a tooth induces inflammation around the tooth being moved. That is what causes the discomfort associated with getting your braces "tightened." ClearCorrect is a clear plastic aligner system like Invisalign that moves teeth by placing pressure on the teeth to be moved. The teeth cannot tell what is being used to generate the pressure, so YES your teeth will be uncomfortable for a day or two every time you insert a new aligner.
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