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| Group | Without aging | With aging | ||
|---|---|---|---|---|
| Mean (SD) | Median | Mean (SD) | Median | |
| T | 15.49 ± 1.08Aa | 15.91 | 11.56 ± 0.45Ab | 11.60 |
| ST | 10.01 ± 0.58Ba | 9.88 | 7.45 ± 1.16Bb | 6.99 |
| XT | 3.30 ± 0.40Ca | 3.16 | 3.19 ± 0.22Ca | 3.22 |
| P | 3.48 ± 0.36Ca | 3.41 | 3.46 ± 0.36Ca | 3.38 |
* A, B, CDifferent letters present significant differences between materials (P < .05)
a, bDifferent letters present significant differences between aging conditions (P < .05)
