From: Recommendations for clear aligner therapy using digital or plaster study casts
Category | Case no. | Main characteristics | Times surgery recommended (%) | Times extraction recommended (%) | Times aligners not recommended (%) | Main reasons for not recommending aligners (times mentioned) |
---|---|---|---|---|---|---|
Class I | 1-1 | Moderate crowding, protrusive profile | 0 | 15 (94%) | 14 (88%) | Extraction case (10) |
1-2 | Moderate crowding, Mx right lateral crossbite Straight profile | 0 | 3 (19%) | 6 (38%) | Extraction case (2) Crossbite (2) | |
2-1 | Moderate to severe crowding; High canine | 0 | 12 (75%) | 13 (81%) | Extraction case (7) Rotation (3) | |
2-2 | Moderate to severe crowding, Mx laterals in crossbite | 0 | 14 (88%) | 14 (88%) | Extraction case (9) Difficult case (2) | |
3-1 | Adult Severe crowding Bilateral posterior crossbite | 2 (12%) | 12 (75%) | 15 (94%) | Extraction case (6) Difficult case (3) Surgery case (2) Crossbite (2) | |
3-2* | Adult Unilateral posterior crossbite, severely proclined upper incisors, class II | 8 (50%) | 13 (81%) | 15 (94%) | Extraction case (6) Surgery case (5) Difficult case (2) | |
4-1 | Anterior open bite, facial asymmetry | 7 (44%) | 9 (56%) | 14 (88%) | Surgery case (6) Extraction case (3) Anchorage (2) Open bite (2) | |
4-2 | Anterior open bite Mild crowding, protrusive lips | 1 (6%) | 15 (94%) | 14 (88%) | Extraction case (7) Surgery case (2) Difficult case (2) Open bite (2) | |
Class II Div 1 | 5-1 | Moderate crowding | 0 | 13 (81%) | 14 (88%) | Extraction case (11) |
5-2 | Moderate crowding | 1 (6%) | 15 (94%) | 14 (88%) | Extraction case (6) Difficult case (2) Surgery case (2) Anchorage (2) | |
6-1 | Deepbite Full-cusp class II Retrognathic mandible | 8 (50%) | 11 (69%) | 13 (81%) | Surgery case (5) Extraction case (4) Difficult case (2) Anchorage (2) | |
6–2 | Deepbite Half-cusp class II; | 1 (6%) | 2 (12%) | 9 (56%) | Deepbite and deep COS (3) Extraction case (2) (9 suggested functional appliances) | |
Class II Div 2 | 7-1 | Deepbite, maxillary moderate crowding | 1 (6%) | 4 (25%) | 7 (44%) | Extraction case (2) (3 suggested functional appliances) |
7-2 | Deepbite | 2 (12%) | 0 | 12 (75%) | AP correction (5) (10 suggested functional appliances) | |
8-1 | Adult Deepbite | 8 (50%) | 3 (19%) | 9 (56%) | Surgery case (3) Extraction case (3) | |
8-2 | Adult Severe crowding | 3 (19%) | 13 (81%) | 14 (88%) | Extraction case (7) Surgery case (3) Difficult case (2) Anchorage (2) | |
Class III | 9-1 | Mild A-P discrepancy Asymmetry | 12 (75%) | 1 (6%) | 9 (56%) | Surgery case (6) AP correction (2) |
9-2 | Mild A-P discrepancy Asymmetry | 2 (12%) | 0 | 8 (50%) | Severity (3) AP correction (3) | |
10-1 | Anterior crossbite, severe A-P discrepancy Asymmetry | 10 (63%) | 4 (25%) | 15 (94%) | Surgery case (7) Difficult case (4) Anchorage (2) | |
10-2 | Anterior crossbite, severe A-P discrepancy Asymmetry | 13 (81%) | 3 (19%) | 15 (94%) | Surgery case (10) Deepbite or deep COS (2) |