Table 7. Results of the related parameters grouped by gender.
| Parameters | Mean ± SD | P values | |
|---|---|---|---|
| Male | Female | ||
| MD-SS | 8.99 ± 0.72 | 8.47 ± 0.71 | .000 |
| BL-SS | 8.43 ± 0.70 | 8.07 ± 0.68 | .003 |
| MR-B | 1.11 ± 0.45 | 0.90 ± 0.31 | .008* |
| MR-L | 2.54 ± 0.80 | 2.89 ± 0.71 | .006 |
| DR-B | 1.18 ± 0.51 | 1.11 ± 0.48 | .413 |
| DR-L | 2.99 ± 0.80 | 3.19 ± 0.65 | .056* |
| RF-I | 16.46 ± 2.10 | 14.85 ± 1.85 | .000 |
| MRA-I | 7.84 ± 2.28 | 6.22 ± 1.82 | .000 |
| DRA-I | 7.27 ± 2.31 | 5.63 ± 1.98 | .000 |
| IRB2 | 2.73 ± 0.48 | 2.88 ± 0.50 | .074 |
| IRB4 | 3.26 ± 0.63 | 3.34 ± 0.61 | .439 |
| IRBA | 4.46 ± 1.06 | 4.41 ± 0.97 | .744 |
MD-SS: mesial-distal socket size; BL-SS: buccal-lingual socket size; MR-B/MR-L: thickness of the buccal/lingual bone of the mesial root at 2 mm apical from the alveolar crest; DR-B/DR-L: thickness of the buccal/lingual bone of the distal root at 2 mm apical from the alveolar crest; RF-I: root furcation fornix to inferior alveolar nerve distance; MRA-I/DRA-I: mesial/distal root apex to the inferior alveolar nerve distance; IRB2/IRB4: the interradicular alveolar bone thickness at 2 mm, 4 mm apical from the furcation fornix; IRBA: the interradicular alveolar bone thickness between the mesial and distal root apex. *: Results from the Mann-Whitney U-test.