From: Quantitative measures of gingival recession and the influence of gender, race, and attrition
Tooth class | Group | n | Mean | SD | t | p |
---|---|---|---|---|---|---|
U6 | Normal wear | 107 | 6.75 | 1.09 | 0.10 | 0.923 |
Severe wear | 12 | 6.71 | 1.25 | |||
U5 | Normal wear | 110 | 7.21 | 1.00 | 2.29 | 0.023* |
Severe wear | 16 | 6.62 | 0.69 | |||
U4 | Normal wear | 109 | 8.20 | 0.94 | 3.21 | 0.002* |
Severe wear | 9 | 7.18 | 0.52 | |||
U3 | Normal wear | 110 | 10.11 | 1.13 | 3.68 | 0.000* |
Severe wear | 18 | 9.09 | 0.84 | |||
U2 | Normal wear | 106 | 8.89 | 1.00 | 3.16 | 0.002* |
Severe wear | 11 | 7.88 | 1.13 | |||
U1 | Normal wear | 97 | 10.41 | 1.12 | 3.13 | 0.002* |
Severe wear | 22 | 9.63 | 0.72 | |||
L6 | Normal wear | 78 | 6.78 | 0.92 | 2.31 | 0.023* |
Severe wear | 44 | 6.40 | 0.77 | |||
L5 | Normal wear | 104 | 7.50 | 0.84 | 3.56 | 0.001* |
Severe wear | 17 | 6.66 | 1.25 | |||
L4 | Normal wear | 107 | 8.37 | 0.83 | 3.52 | 0.001* |
Severe wear | 10 | 7.40 | 0.87 | |||
L3 | Normal wear | 103 | 10.00 | 1.28 | 4.14 | 0.000* |
Severe wear | 29 | 8.93 | 0.99 | |||
L2 | Normal wear | 102 | 8.42 | 1.02 | 3.04 | 0.003* |
Severe wear | 23 | 7.72 | 0.86 | |||
L1 | Normal wear | 97 | 8.41 | 1.01 | 4.65 | 0.000* |
Severe wear | 26 | 7.37 | 1.04 |