Table 1.
Demographic and clinical information of participants in clear aligner therapy (CAT) group and fixed orthodontic treatment (FOT) group.
| Characteristics | CAT (n = 40) | FOT (n = 40) | P value |
|---|---|---|---|
| Age | 21.80 ± 5.11 | 23.28 ± 5.60 | 0.222 |
| Gender | |||
| Female | 31 (77.5%) | 29 (72.5%) | 0.317 |
| Male | 9 (22.5%) | 11 (27.5%) | |
| Skeletal pattern | 0.589 | ||
| Class Ⅰ | 34 (85%) | 32 (80%) | |
| Class Ⅱ | 5 (12.5%) | 5 (12.5%) | |
| Class Ⅲ | 1 (2.5%) | 3 (7.5%) | |
| Pretreatment PAR index | 21.90 ± 6.69 | 23.33 ± 7.97 | 0.389 |
| Posttreatment PAR index | 5.33 ± 3.39 | 4.30 ± 2.483 | 0.127 |
| PAR index reduction | 16.57 ± 5.76 | 19.03 ± 7.68 | 0.116 |
| Treatment duration (month) | 22.08 ± 4.51 | 20.83 ± 5.29 | 0.259 |
PAR = peer assessment rating.