Table 2.
Baseline characteristics (n = 181).
| CAD/CAM n = 90 |
Conventional n = 91 |
Total (%) |
P
(test of proportions/unpaired sample t-test) |
|
|---|---|---|---|---|
| Gender | n = | n = | ||
| Female | 44 | 52 | 96 (53.0) | 0.26 |
| Male | 46 | 39 | 85 (47.1) | |
| Treatment modality | ||||
| Extraction cases | 12 | 16 | 28 (15.5) | 0.43 |
| Non-extraction cases | 78 | 75 | 153 (84.5) | |
| Mean | SD | Range | Mean | SD | Range | |||
|---|---|---|---|---|---|---|---|---|
| Age at start of retention T0 (years) | 16.0 | 2.6 | 12.1–25.8 | 16.4 | 3.0 | 12.1–25.8 | 0.28 | |
| LIIa (pre-treatment) | 5.3 | 2.9 | 0.6–13.7 | 6.1 | 2.8 | 1.2–15.1 | 0.08 |
Pre-treatment models were lost for one patient in the CAD/CAM group (n = 89), and for two patients in the Conventional group (n = 89).