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Table 2 Outcome in single tooth vs. multiple implants

From: Esthetic outcome of implant-based reconstructions in augmented bone: comparison of autologous and allogeneic bone block grafting with the pink esthetic score (PES)

Type of restoration Number of implants in group PES (average across all observations) Bone loss (mm)
Single tooth 18 (37.5%) 8.8 ± 2.3 1.91 ± 1.33
Two or three adjacent implants 23 (47.9%) 6.9 ± 2.5 1.45 ± 1.15
Four or more adjacent implants 7 (14.6%) 6.3 ± 2.4 1.05 ± 1.38
p-value   0.024 (all 3 groups) >0.05
0.018 (single vs. 2-3)
0.026 (single vs. ≥4)
0.561 (2-3 vs. ≥4)