Table 2.
Descriptive statistics of total bone depth outcomes
| Total bone depth | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Standard deviation | Minimum | Maximum | |||||||||
| P2-M1 | M1F | M1-M2 | P2-M1 | M1F | M1-M2 | P2-M1 | M1F | M1-M2 | P2-M1 | M1F | M1-M2 | |
| − 2P(45°) | 7.1 | 4.9 | 5.0 | 4.0 | 2.8 | 3.0 | 1.4 | 0.9 | 1.0 | 15.5 | 11.1 | 11.6 |
| zeroP(45°) | 7.6 | 4.9 | 5.6 | 4.6 | 2.7 | 2.5 | 1.6 | 1.1 | 1.0 | 26.3 | 12.8 | 12.0 |
| + 2P(45°) | 8.0 | 5.8 | 6.1 | 4.2 | 3.0 | 3.2 | 1.6 | 1.1 | 1.1 | 17.7 | 12.2 | 13.6 |
| − 2P(60°) | 6.9 | 5.1 | 5.1 | 4.3 | 3.3 | 2.9 | 1.1 | 1.0 | 1.2 | 19.6 | 13.8 | 14.3 |
| zeroP(60°) | 7.5 | 5.0 | 4.8 | 4.3 | 3.1 | 2.9 | 1.3 | 1.0 | 0.8 | 19.0 | 14.9 | 11.6 |
| + 2P(60°) | 8.0 | 5.1 | 5.4 | 4.1 | 2.6 | 2.7 | 1.4 | 1.1 | 1.0 | 17.2 | 12.1 | 11.5 |
| − 2P(75°) | 5.0 | 4.1 | 3.6 | 2.8 | 2.2 | 1.8 | 1.0 | 1.2 | 1.2 | 11.9 | 8.7 | 10.0 |
| zeroP(75°) | 6.8 | 4.8 | 5.0 | 4.0 | 2.7 | 2.9 | 1.2 | 1.1 | 1.0 | 17.6 | 10.7 | 15.9 |
| + 2P(75°) | 8.3 | 5.7 | 5.5 | 4.0 | 3.0 | 2.8 | 1.6 | 1.0 | 1.4 | 17.2 | 12.4 | 11.2 |
Values are reported in millimeters (mm). Outcomes were evaluated between second premolar and the first molar (P2-M1), at the furcation of the first molar (M1F) and between the first molar and the second molar (M1-M2). Insertion axes were traced passing through 3 landmarks: zero point (zeroP), 2 mm cranial to zeroP (− 2P), and 2 mm caudal to zeroP (+ 2P). Insertion axes were also traced at three different angulations (45°, 60°, and 75°) compared to the occlusal plane