tooth position | n | MBR | DBR | PR |
---|
16 | 200 | 2.17 ± 3.44 | 2.36 ± 3.23 | 2.62 ± 3.52 |
17 | 200 | 1.61 ± 3.37 | 1.95 ± 3.44 | 2.91 ± 3.07 |
26 | 200 | 2.31 ± 3.10 | 2.49 ± 3.47 | 2.33 ± 3.20 |
27 | 200 | 1.57 ± 3.33 | 1.90 ± 3.17 | 2.55 ± 3.10 |
- Tooth position 16 represents the right first molar, 17 represents the right second molar, 26 represents left first molar, and 27 represents left second molar
- MBR, the distance between the apex of the mesiobuccal root and the inferior wall of the MSF; DBR, the distance between the apex of the distobuccal root and the inferior wall of the MSF; PR, the distance between the apex of the palatal root and the inferior wall of the MSF. Unit: mm; data are presented as the mean SD