Table 4.
Post hoc Bonferroni’s corrected paired t-tests for intergroup comparison of change in smile index at different vertical dimensions at occlusion
| Group | Mean difference | P | Significance |
|---|---|---|---|
| MI versus +1 mm | 0.260 | 1.0 | Not significant |
| MI versus +2 mm | −0.620 | 1.0 | Not significant |
| MI versus +3 mm | −0.697 | 1.0 | Not significant |
| MI versus +4 mm | −1.614 | 0.003 | Significant |
| +1 mm versus +2 mm | −0.880 | 0.002 | Significant |
| +1 mm versus +3 mm | −0.958 | 0.001 | Significant |
| +1 mm versus +4 mm | −1.874 | <0.001 | Highly significant |
| +2 mm versus +3 mm | −0.078 | 1.0 | Not significant |
| +2 mm versus +4 mm | −0.994 | <0.001 | Highly significant |
| +3 mm versus +4 mm | −0.917 | 0.008 | Significant |
MI: Maximum intercuspation