Short-term (12 weeks)

Minor tooth crowding, and tooth movement less than 2mm

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Crowding

When teeth erupt, there is not enough space to form, so the teeth are twisted or overlapped. Causes include eruption of an abnormally positioned tooth, premature loss of primary teeth, or relatively large teeth, etc.

Mid-term (24 weeks)

Relatively severe tooth crowding requiring IPR or expansion, and tooth movement within 2~3mm

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Long-term (48 weeks)

Severe tooth crowding requiring IPR and expansion, and tooth movement more than 3mm

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Not applicable

Very severe tooth crowding, anterior protrusion, jaw dissonance etc. Requiring excessive tooth extraction, IPR(tooth damage) and tooth movement

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