Table 1 Comparison of changes in rugae ridge length (mm) after orthodontic treatment
From: Characteristic changes of the palatal rugae following orthodontic treatment
Treatment | Length difference | Number | Mean | Std. deviation | P value |
|---|---|---|---|---|---|
Extraction | R1R after–R1R before | 15 | 0.7337 | 0.9562 | 0.010 |
R2R after–R2R before | 15 | 0.1933 | 0.9499 | 0.444 | |
R3R after–R3R before | 15 | − 0.9404 | 1.5316 | 0.032 | |
R1L after–R1L before | 15 | 0.0195 | 1.3956 | 0.957 | |
R2L after–R2L before | 15 | − 0.1841 | 1.2550 | 0.579 | |
R3L after–R3L before | 15 | − 0.1228 | 0.8299 | 0.576 | |
IP after–IP before | 15 | − 0.3049 | 1.1460 | 0.320 | |
Expansion | R1R after–R1R before | 15 | 0.0824 | 0.7517 | 0.678 |
R2R after–R2R before | 15 | 0.4537 | 0.6523 | 0.017 | |
R3R after–R3R before | 15 | 0.3566 | 0.9180 | 0.155 | |
R1L after–R1L before | 15 | 0.1717 | 0.5171 | 0.219 | |
R2L after–R2L before | 15 | 0.4706 | 0.6231 | 0.011 | |
R3L after–R3L before | 15 | 0.5126 | 0.9658 | 0.059 | |
IP after–IP before | 15 | − 0.0005 | 0.9720 | 0.998 |