Table 2.
Buccal bone thickness pre‐extraction, 1 month and 5 years after dental implant surgery in group A (immediate placement/immediate provisionalization) and group B (immediate placement/delayed provisionalization), expressed as medians and significant differences between the groups
| Group A | Group B | Significance* (p) | |
|---|---|---|---|
| Median (interquartile range) in mm | Median (interquartile range) in mm | ||
| Buccal bone thickness pre‐extraction | |||
| M0 (at neck) | 2.23 [1.84;2.74] | 2.14 [1.64;2.59] | .639 |
| M1 | 2.26 [1.56;2.56] | 2.16 [1.74;2.54] | 1.000 |
| M2 | 2.43 [2.08;2.78] | 2.23 [1.60;2.48] | .175 |
| M3 | 2.33 [1.93;2.45] | 2.23 [1.54;2.34] | .165 |
| M4 | 2.15 [1.65;2.35] | 1.95 [1.54;2.35] | .415 |
| M5 | 1.64 [1.36;2.15] | 1.94 [1.50;2.45] | .552 |
| Buccal bone thickness 1 month | |||
| M0 (at neck) | 2.04 [0.73;2.54] | 0.94 [0.54;1.98] | .125 |
| M1 | 2.26 [1.73;2.46] | 1.06 [0.51;2.36] | .071 |
| M2 | 2.23 [1.78;2.73] | 1.48 [0.60;2.25] | .026 |
| M3 | 2.23 [1.75;2.45] | 1.34 [0.57;2.01] | .009 |
| M4 | 1.93 [1.63;2.25] | 1.45 [0.45;1.91] | .022 |
| M5 | 1.54 [1.26;2.04] | 1.21 [0.38;1.62] | .088 |
| Buccal bone thickness 5 years | |||
| M0 (at neck) | 1.24 [0.73;2.34] | 0.88 [0.64;2.13] | .381 |
| M1 | 2.05 [1.23;2.44] | 1.53 [0.66;2.16] | .145 |
| M2 | 2.11 [1.64;2.48] | 1.48 [0.98;2.08] | .027 |
| M3 | 2.19 [1.82;2.38] | 1.43 [0.85;1.65] | <.001 |
| M4 | 1.94 [1.43;2.14] | 1.05 [0.65;1.45] | .001 |
| M5 | 1.65 [1.13;1.91] | 1.06 [0.56;1.36] | .001 |
*
Mann–Whitney U test for significant differences between medians of groups at three time points.