Misalignment | Limit |
---|---|
Crowding/spacing |  ≤ 7 mm |
Arch/width expansion | 4Â mm per arch |
Overbite (deep vs. open) |  ≤ 5 mm total |
Midline discrepancy | 1Â mm |
Treatment includes • Number of aligners per arch • Additional aligners | Up to 20 Two sets (1,2) |