TABLE 1.
Micro‐CT analysis of tissue mineral density (TMD), bone mineral density (BMD) and bone volume fraction (BVF) in biopsies taken from fresh calvarial bone grafts and from reconstructed maxillary alveolar ridges with calvarial bone graft 4 months after reconstruction and prior to implant placement
| Healed reconstructed alveolar process biopsies | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Fresh calvarial bone biopsies (n = 13) | Native bone (n = 12) | Grafted bone (n = 12) | P value a | P value b | ||||||
| Median | IQR | Median | IQR | Median | IQR | Z | P | Z | P | |
| TMD (mg HA/cm3) | 617.9 | 510.3‐784.5 | 373.9 | 300.5‐484.9 | 596.3 | 444.4‐756.1 | −2.5 | .01* | −.87 | .43 |
| BMD (mg HA/cm3) | 983.4 | 962.9‐1016.2 | 866.7 | 823.7‐909.7 | 919.4 | 827.5‐985.1 | −2.1 | .04* | −1.9 | .06 |
| BVF (%) | 59.8 | 51.6‐72.7 | 30.5 | 24.4‐43.8 | 62.6 | 35.3‐74.1 | −2.5 | .01* | −.62 | .58 |
Abbreviation: IQR, interquartile range.
a
Equality of medians tested between native and grafted bone within the same biopsy using a Wilcoxon Signed Rank test.
b
Equality of medians tested between fresh calvarial bone and grafted calvarial bone after 4 months of healing.
*
Significant difference between native and grafted bone within the same biopsy obtained after 4 months healing, P < .05.