Table 5. Paired samples test at 95%, null hypothesis stating that for each type of material, the mean values obtained with 2 or 3 mm of gingival thickness are similar. The null hypothesis was rejected for all types of material with the exception of zirconium dioxide, Standard shade.
| Paired samples test | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Difference by pair | |||||||||
| Mean | Standard deviation | Standard error of the mean | 95% confidence interval for the difference | t | Degree of freedom | Sig. (bilateral) | |||
| Inferior | Superior | ||||||||
| Pair 1 | Ti (2 mm) vs Ti (3 mm) |
5.7188 | 3.2254 | 1.1403 | 3.0223 | 8.4153 | 5.015 | 7 | 0.00154 |
| Pair 2 | Zi (2 mm) vs Zi (3 mm) |
2.2953 | 2.7516 | 0.9728 | −0.0051 | 45,957 | 2.359 | 7 | 0.05039 |
| Pair 3 | Zi-B1(2 mm) vs Zi-B1 (3 mm) |
5.73026 | 2.3461 | 0.8295 | 3.7688 | 7.6917 | 6.908 | 7 | 0.00023 |
| Pair 4 | Zi-A-3.5 (2 mm) vs Zi-A-3,5 (3 mm) |
4.5341 | 2.3384 | 0.8268 | 2.5791 | 6.4890 | 5.484 | 7 | 0.00092 |
| Pair 5 | QA (2 mm) vs QA (3 mm) |
3.5831 | 3.7983 | 1.3429 | 0.4076 | 6.7588 | 2.668 | 7 | 0.03208 |