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Percentage of hard tissue fraction to total bone volume (HTFTB, %) of all interradicular areas: IRA 3–4, IRA 4–5, IRA 5–6, IRA 6–7 and IRA 7d; mean, standard deviation (SD), minimum (min), maximum (max) and variance
| IRA 3-4 | IRA 4-5 | IRA 5-6 | IRA 6-7 | IRA 7d | |
|---|---|---|---|---|---|
| Mean | 44.08% | 31.07% | 33.96% | 36.33% | 25.40% |
| SD | 14.32% | 12.18% | 12.74% | 8.12% | 12.13% |
| Min | 17.20% | 16.82% | 20.50% | 27.20% | 11.20% |
| Max | 67.03% | 52.20% | 62.40% | 53.90% | 38.60% |
| Variance | 202.198 | 164.229 | 162.554 | 67.998 | 147.244 |
