Table 1 Changes in types of maxillary dental arch form from age 12 through 15 to age 18 years.
Age (years) | Types of dental arch form | p-value | Pair-wise comparison | |||
---|---|---|---|---|---|---|
Narrow N (%) | Middle N (%) | Wide N (%) | Age pair | p-value | ||
12 | 81 (37.2) | 88 (4.4) | 49 (22.5) | p < 0.001*** | 12 vs 15 | p = 0.17ns |
15 | 92 (42.2) | 69 (31.7) | 57 (26.1) | 15 vs 18 | p < 0.001*** | |
18 | 43 (19.7) | 101 (46.3) | 74 (33.9) | 12 vs 18 | p < 0.001*** |