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Table 4 Comparison of inclination of occlusal planes and other skeletal/dental variables within and between groups

From: Changes of occlusal plane inclination after orthodontic treatment in different dentoskeletal frames

Measurements Within groups (pvalue) Between groups (pvalue)
Pre- vs. post- treatment Pre-treatment Post-treatment
Skeletal I Skeletal II Skeletal III I vs. II I vs. III II vs. III I vs. II I vs. III II vs. III
Skeletal frame          
 SNA°a 0.121 0.001** 0.071 0.944 0.000*** 0.000*** 0.781 0.002** 0.004**
 SNB° 0.867 0.038* 0.401 0.001** 0.876 0.001** 0.017* 0.742 0.007**
 ANB° 0.012* 0.000*** 0.589 0.000*** 0.000*** 0.000*** 0.000*** 0.000*** 0.000***
 MP-SN° 0.054 0.648 0.907 0.019* 0.687 0.051 NS NS NS
Occlusal plane          
 BOP-SN° 0.138 0.013* 0.539 0.012* 0.882 0.008** 0.002** 0.586 0.000***
 FOP-SN° 0.302 0.279 0.372 0.021* 0.967 0.019* 0.001** 0.898 0.002**
 MxOP-MnOP° 0.000*** 0.000*** 0.013* 0.384 0.003** 0.000*** NS NS NS
Dental          
 Overbite (mm) 0.000*** 0.000*** 0.063 0.207 0.000*** 0.000*** NS NS NS
 Overjet (mm) 0.000*** 0.000*** 0.434 0.043* 0.000*** 0.000*** NS NS NS
Maxillary dentoalveolar          
 U1-SN° 0.001** 0.000*** 0.000*** 0.025* 0.152 0.000*** 0.067 0.343 0.006**
 U1-PP (mm) 0.154 0.006** 0.002** NS NS NS NS NS NS
 U6-PP (mm) 0.000*** 0.000*** 0.000*** NS NS NS NS NS NS
Mandibular dentoalveolar          
 L1-SN° 0.004** 0.000*** 0.375 0.004** 0.005** 0.000*** 0.000*** 0.000*** 0.000***
 L1-MP° 0.019* 0.000*** 0.366 0.155 0.001** 0.000*** 0.014* 0.000*** 0.000***
 L1-MP (mm) 0.001** 0.015* 0.000*** 0.240 0.172 0.012* NS NS NS
 L6-MP (mm) 0.000*** 0.000*** 0.000*** NS NS NS 0.233 0.086 0.004**
  1. a “°” represents the unit of angle measurement “degree”; *p < 0.05; **p < 0.01; ***p < 0.001; NS, not statistically significant.