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The bone thickness and height of labial margin (xˉ ± s, mm, n = 18).
| Second stage surgery | 6 months | 1 year | 2 years | |
|---|---|---|---|---|
| Bone thickness | 3.01 ± 0.23a | 2.96 ± 0.21b | 2.93 ± 0.19c | 2.92 ± 0.19c |
| Bone height reduction | Higher than implant top (baseline value) | 0.72 ± 0.07b | 0.91 ± 0.08c | 0.90 ± 0.07c |
Different superscripts indicate significant differences between groups (P < 0.05).
