Research Article
Comparisons of Jaw Line and Face Line after Mandibular Setback: Intraoral Vertical Ramus versus Sagittal Split Ramus Osteotomies
Table 3
Comparison of frontal angles after mandibular setback operations (SSROvs. IVRO).
| | Postoperation changes | | SSRO | IVRO | SSRO vs.IVRO | Bilateral sides | Mean | SD | p value | | Mean | SD | p value | | p value | |
| Or-ramus angle | 2.3 | 5.53 | 0.0326 | | -7.3 | 11.15 | 0.0015 | | 0.0001 | †, SSRO > IVRO | Or-muscle angle | 2.9 | 11.36 | 0.1749 | — | -0.5 | 9.56 | 0.7874 | — | 0.1917 | — | Or-skin angle | 0.7 | 7.50 | 0.5965 | — | -5.4 | 6.51 | 0.0001 | | 0.0010 | †, SSRO > IVRO | Jaw angle | -3.8 | 6.95 | 0.0052 | | 7.1 | 9.99 | 0.0007 | | 0.0001 | †, IVRO > SSRO | Face angle | -3.5 | 11.48 | 0.1073 | — | 3.4 | 7.66 | 0.0229 | | 0.0054 | †, IVRO > SSRO |
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: intragroup comparison: statistically significant, p < 0.05. †: intergroup comparison: statistically significant, p < 0.05. —: not significant. |