Table 4 Regression analysis showing variation in dental arch dimensions with Gender
Measurement | Regression coefficient (95 % CI) | P value | Constant (95 % CI) |
|---|---|---|---|
Maxillary (overall) | −1.50 (−2.91 to −0.09) | 0.04 | 33.10 (32.00 to 34.19) |
Inter-canine distance | −1.60 (−2.35 to −0.85) | <0.01 | 36.90 (36.31 to 37.48) |
Second inter-premolar distance | −2.02 (−2.83 to −1.22) | <0.01 | 43.86 (43.23 to 44.49) |
First molar distance | −2.50 (−3.38 to −1.61) | <0.01 | 49.82 (49.12 to 50.51) |
Total arch length | −1.15 (−1.96 to −0.34) | 0.01 | 33.39 (32.75 to 34.02) |
Anterior segment length | −0.44 (−1.00 to 0.13) | 0.13 | 13.64 (13.20 to 14.08) |
Posterior segment length | −0.78 (−2.57 to 1.02) | 0.40 | 20.47 (19.07 to 21.87) |
Mandibular (overall) | −1.05 (−2.52 to 0.42) | 0.16 | 28.71 (27.56 to 29.85) |
Inter-canine distance | −1.31 (−2.04 to −0.59) | <0.01 | 27.86 (27.29 to 28.42) |
Second inter-premolar distance | −2.44 (−3.28 to −1.61) | <0.01 | 38.04 (37.38 to 38.68) |
First molar distance | −2.47 (−3.59 to −1.35) | <0.01 | 43.19 (42.32 to 44.05) |
Total arch length | −0.88 (−1.74 to −0.02) | 0.05 | 29.88 (29.21 to 30.55) |
Anterior segment length | −1.29 (−1.93 to −0.65) | <0.01 | 10.04 (9.55 to 10.54) |
Posterior segment length | 2.68 (−2.48 to 7.83) | 0.31 | 23.94 (19.92 to 27.97) |