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Table 5 Characteristics, treatment plans, and Invisalign® recommendations

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)
  1. *This patient had a Class II posterior malocclusion