Table 6.
Pearson correlations between periodontal variables and midpalatal suture gap according to intervention groups
| Periodontal variables | MPS (T1) | |||
|---|---|---|---|---|
| RPE (N = 17) | MARPE (N = 19) | |||
| PM-BBPT (mm) | T1-T0 | r | 0.059 | − 0.040 |
| Sig | 0.823 | 0.872 | ||
| T2-T0 | r | 0.225 | − 0.016 | |
| Sig | 0.384 | 0.949 | ||
| PM-PBPT (mm) | T1-T0 | r | 0.403 | 0.503 |
| Sig | 0.109 | 0.028* | ||
| T2-T0 | r | 0.384 | 0.298 | |
| Sig | 0.128 | 0.215 | ||
| M-BBPT (Mesial root) (mm) | T1-T0 | r | − 0.073 | − 0.341 |
| Sig | 0.779 | 0.153 | ||
| T2-T0 | r | 0.009 | − 0.190 | |
| Sig | 0.972 | 0.435 | ||
| M-BBPT (Distal root) (mm) | T1-T0 | r | 0.107 | − 0.407 |
| Sig | 0.684 | 0.084 | ||
| T2-T0 | r | 0.029 | − 0.287 | |
| Sig | 0.912 | 0.234 | ||
| M-PBPT (mm) | T1-T0 | r | 0.069 | 0.286 |
| Sig | 0.792 | 0.236 | ||
| T2-T0 | r | − 0.058 | 0.444 | |
| Sig | 0.826 | 0.057 | ||
*Indicate statistical significance with Pearson’s correlation test (*P < 0.05). Abbreviations: MPS (T1), midpalatal suture gap at T1; RPE, rapid palatal expansion; MARPE, mini-screw assisted rapid palatal expansion; T0, before treatment; T1, immediately after expansion; T2, after a 3-month consolidation period; r, Pearson’s correlation; Sig, significance