Table 1: Comparison of mesiodistal and buccolingual measurements of the maxillary and mandibular teeth according to severity of hypodontia.

Tooth Measurement Group I Group II Group III Group IV P-value
Mean ± SD N Mean ± SD N Mean ± SD N Mean ± SD N
U1 MD 7.89 ± 0.53 40 7.20 ±0. 80 39 6.71 ±0.79 40 8.14 ± 0.67 40 < 0.001
BL 6.51 ± 0.70 40 6.20 ±0.64 39 5.59 ±0.86 40 7.05 ±0.37 40 < 0.001
U2 MD 5.32 ± 1.01 25 4.87 ±0.80 24 4.25 ±1.14 22 6.28 ±0.55 40 < 0.001
BL 5.46 ±0.63 25 5.40 ± 0.96 24 4.31 ±0.78 21 6.12 ±0.47 40 < 0.001
U3 MD 6.99 ±0.52 40 6.65 ±0.66 36 6.25 ±0.64 34 7.07 ± 0.59 40 0.334
BL 7.23 ± 0.84 40 6.94 ±0.87 36 6.31 ±0.66 34 7.90 ±0.58 40 < 0.001
U4 MD 5.76 ± 0.50 40 5.29 ±0.73 38 4.96 ±0.50 19 6.01 ±0.41 40 < 0.001
BL 8.57 ± 0.66 40 8.19 ±0.73 38 7.32 ±0.52 21 9.31 ±0.48 40 < 0.001
U5 MD 5.74 ± 0.54 39 5.39 ±0.65 34 5.02 ±0.48 22 5.94 ±0.60 40 < 0.001
BL 8.73 ± 0.64 39 8.39 ±0.71 35 8.08 ±0.60 22 9.45 ±0.37 40 < 0.001
U6 MD 9.64 ± 0.68 40 9.00 ±0.79 39 8.57 ±0.89 36 9.78 ±0.48 40 < 0.001
BL 10.90 ±0.59 40 10.53 ±0.72 39 9.89 ±0.49 35 11.02 ±0.39 40 < 0.001
L1 MD 5.11 ± 0.53 39 4.56 ±0.76 35 4.25 ±0.69 29 5.18 ±0.50 40 < 0.001
BL 5.42 ± 0.79 39 5.26 ±0.60 35 4.64 ±0.48 29 6.01 ±0.36 40 < 0.001
L2 MD 5.49 ± 0.56 40 4.83 ±0.57 39 4.60 ±0.67 33 5.50 ±0.39 40 < 0.001
BL 5.86 ± 0.74 40 5.57 ±0.54 39 5.00 ±0.69 34 6.21 ±0.34 40 < 0.001
L3 MD 6.16 ± 0.60 40 5.59 ±0.56 40 5.35 ±0.47 38 6.45 ±0.40 40 < 0.001
BL 6.73 ± 0.83 40 6.56 ±0.63 40 5.83 ±0.68 38 7.38 ±0.43 40 < 0.001
L4 MD 6.14 ± 0.65 40 5.57 ±0.80 39 5.40 ±0.55 28 6.55 ±0.50 40 < 0.001
BL 7.51 ± 0.59 40 7.51 ±0.61 39 7.03 ±0.38 28 8.03 ±0.42 40 < 0.001
L5 MD 6.43 ± 0.61 36 5.80 ±0.98 25 5.46 ±0.76 9 6.53 ±0.57 40 < 0.001
BL 8.09 ± 0.58 36 7.77 ±0.90 24 7.18 ±0.70 9 8.56 ±0.33 40 < 0.001
L6 MD 9.87 ± 0.85 40 9.44 ±0.76 39 8.88 ±0.74 37 9.94 ±0.52 40 < 0.001
BL 10.26 ±0.60 40 10.05 ±0.62 40 9.40 ±0.58 37 10.30 ±0.42 40 < 0.001

U: upper; L: lower; SD: standard deviation; group I: mild hypodontia; group II: moderate hypodontia; group III: severe hypodontia; and group IV: normal controls; MD: mesiodistal; BL: buccolingual.

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