Table 4.
Canal flare indices for DDH and control groups
| DDH (n = 51) | p | Normal (n = 30) | ||
|---|---|---|---|---|
| IVa (n = 25) | IVb (n = 26) | |||
| ML-CFI | 3.02 ± 0.53## | 3.99 ± 0.71# | 0.000** | 4.39 ± 0.40 |
| AP-CFI | 2.47 ± 0.54 | 2.74 ± 0.65 | 0.079 | 2.70 ± 0.40 |
| D+20/Di | 2.61 ± 0.43# | 2.53 ± 0.47## | 0.500 | 2.89 ± 0.41 |
| ML-MCFI | 2.68 ± 0.56 | 2.86 ± 0.55 | 0.599 | 2.65 ± 0.31 |
| AP-MCFI | 1.96 ± 0.45 | 1.96 ± 0.33 | 0.999 | 1.86 ± 0.27 |
| D+20/D−20 | 2.10 ± 0.42# | 1.83 ± 0.28 | 0.014* | 1.82 ± 0.43 |
| ML-DCFI | 1.14 ± 0.13## | 1.42 ± 0.22## | 0.000** | 1.68 ± 0.21 |
| AP-DCFI | 1.27 ± 0.18## | 1.39 ± 0.18 | 0.037* | 1.47 ± 0.23 |
| D−20/Di | 1.26 ± 0.16## | 1.42 ± 0.20## | 0.005** | 1.70 ± 0.21 |
Values are presented as the mean and the standard deviation; p means the differences between type IVa and type IVb DDH; *p < 0.05, **p < 0.01 for the comparison between the DDH groups; #p < 0.05, ##p < 0.01, when compared with control group
CFI canal flare index, MCFI metaphyseal canal flare index, DCFI diaphyseal canal flare index