Table 4.
The distribution of inter-canine and inter-molar distances according to age group
| Maxilla | Mandible | |||
|---|---|---|---|---|
| ICD (cm) | IMD (cm) | ICD (cm) | IMD (cm) | |
| 4 years (n = 1) | 4.10 ± 0.0 | 5.10 ± 0.0 | 3.60 ± 0.0 | 4.50 ± 0.0 |
| 5 years (n = 141) | 3.93 ± 0.29 | 5.06 ± 0.33 | 3.47 ± 0.27 | 4.64 ± 0.31 |
| 6 years (n = 273) | 4.06 ± 0.35 | 5.20 ± 0.32 | 3.59 ± 0.35 | 4.73 ± 0.33 |
| P value | 0.001 (S) | 0.001 (S) | 0.002 (S) | 0.018 (S) |
Values are mean ± standard deviation. P value was obtained by one-way analysis of variance (ANOVA) after confirming the underlying normality assumption. P < 0.05 was considered to be statistically significant. ICD, inter-canine distance; IMD, inter-molar distance; S, statistically significant; NS, statistically non-significant.