Table 4.
Perceived advantages of clear aligners over fixed appliances by clinical experience
| In which of the following tooth movements do you believe clear aligners are superior to fixed orthodontic appliances? | 1–2 years | 2–5 years | 5–10 years | χ2 | p value | No cases | 1–10 cases | 11–30 cases | 30 + | χ2 | p value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |||||
| Distalization | 89 (84.8) | 77 (73.3) | 20 (80.0) | 21.696 | 0.153 | 37(80.4) | 64(73.6) | 30(81.1) | 55(84.6) | 37.795 | 0.061 |
| Mesialization | 5 (4.8) | 2 (1.9) | 1 (4.0) | 1(2.2) | 5(5.7) | 0(0) | 2(3.1) | ||||
| Rotation | 6 (5.7) | 3 (2.9) | 0 (0.0) | 0(0) | 6(6.9) | 2(5.4) | 1(1.5) | ||||
| Intrusion | 34 (32.4) | 54 (51.4) | 11 (44.0) | 12(26.1) | 34(39.1) | 26(70.3) | 27(41.5) | ||||
| Extrusion | 5 (4.8) | 8 (7.6) | 1 (4.0) | 0(0) | 6(6.9) | 3(5.7) | 1(1.5) | ||||
| Expansion | 21 (20.0) | 29 (27.6) | 7 (28.0) | 12(26.1) | 11(12.6) | 14(37.8) | 20(30.8) | ||||
| Root movement | 2 (1.9) | 4 (3.8) | 1 (4.0) | 1(2.2) | 3(3.4) | 1(2.7) | 2(3.1) | ||||
| None of the above | 9 (8.6) | 14 (13.3) | 1 (4.0) | 5(10.9) | 10(11.5) | 2(5.4) | 7(10.8) | ||||
| Cramer’s V 0.127 | Cramer’s V 0.155 | ||||||||||
The left part of the table shows how many years orthodontists have been providing CAT. The right part shows the number of CAT cases they have completed
* p value from chi-squared tests