Table 3.
Comparisons of positive and negative tooth surface change after VBR
| 3Shape | Meshmixer | EasyRx | Total | P value 1 | ||
|---|---|---|---|---|---|---|
| N (%) | ||||||
| Incisors | Positive | 74 (92.50%) | 68 (85.00%) | 71 (88.75%) | 213 (88.75%) |
χ2= 2.25 P= 0.32 |
| Negative | 6 (7.50%) | 12 (15.00%) | 9 (11.25%) | 27 (11.25%) | ||
| Canines and premolars | Positive | 75 (62.50%) | 74 (61.67%) | 89 (74.17%) | 238 (66.11%) |
χ2= 5.23 P= 0.07 |
| Negative | 45 (37.50%) | 46 (38.33%) | 31 (25.83%) | 122 (33.89%) | ||
| Molars | Positive | 33 (82.50%) | 38 (95.00%) | 40 (100%) | 111 (92.50%) |
χ2= 19.47 P <0.001* |
| Negative | 7 (17.50%) | 2 (5.00%) | 0 (0%) | 9 (7.50%) | ||
| Overall | Positive | 182 (75.83%) | 180 (75%) | 200 (83.33%) | 562 (78.06%) |
χ2= 5.90 P= 0.052 |
| Negative | 58 (24.17%) | 60 (25%) | 40 (16.67%) | 158 (21.94%) | ||
| P value 2 |
χ2= 24.74 P <0.001* |
χ2= 24.18 P <0.001* |
χ2= 16.95 P <0.001* |
|||
χ2: Chi-square test was used
P value 1: Comparison between the three study groups, P value 2: comparison between different segments within each group
*Statistically significant at p value <0.05