Table 3: Descriptive statistics of overall and anterior tooth size dimensions and ratios among different occlusion groups and comparisons of their mean values by ANOVA.
Classification |
Maxillary 3-3 (mm) |
Mandibular 3-3 (mm) |
Anterior ratio (%) |
Maxillary 6-6 (mm) |
Mandibular 6-6 (mm) |
Overall Ratio (%) |
Class I |
N |
288 |
288 |
288 |
288 |
288 |
288 |
Mean |
46.92 |
36.62 |
78.05 |
98.45 |
90.18 |
91.57 |
SD |
0.70 |
0.53 |
0.52 |
1.29 |
1.28 |
0.38 |
Min |
45.3 |
35.27 |
77.13 |
94.28 |
86.16 |
91.13 |
Max |
49.69 |
38.72 |
79.42 |
103.51 |
98.62 |
97.01 |
SE |
0.04 |
0.03 |
0.03 |
0.07 |
0.07 |
0.02 |
Class II |
N |
110 |
110 |
110 |
110 |
110 |
110 |
Mean |
48.88 |
38.64 |
79.14 |
100.32 |
91.83 |
91.54 |
SD |
1.74 |
1.38 |
0.72 |
3.03 |
2.82 |
0.50 |
Min |
44.28 |
34.19 |
77.78 |
91.29 |
83.64 |
90.06 |
Max |
54.2 |
42.56 |
82.13 |
107.90 |
99.06 |
92.74 |
SE |
0.17 |
0.13 |
0.07 |
0.29 |
0.27 |
0.05 |
Class III |
N |
30 |
30 |
30 |
30 |
30 |
30 |
Mean |
48.25 |
37.40 |
77.54 |
98.7 |
89.03 |
90.21 |
SD |
1.75 |
1.32 |
0.66 |
3.42 |
3.26 |
0.79 |
Min |
44.5 |
34.3 |
76.18 |
90.86 |
80.98 |
89 |
Max |
52.29 |
40.14 |
78.84 |
104.2 |
94.39 |
91.79 |
SE |
0.32 |
0.24 |
0.13 |
0.62 |
0.60 |
0.14 |
Normal |
N |
93 |
93 |
93 |
93 |
93 |
93 |
Mean |
48.36 |
37.46 |
77.54 |
99.37 |
90.85 |
91.41 |
SD |
2.0 |
1.42 |
0.30 |
2.87 |
2.61 |
0.22 |
Min |
44.24 |
34.29 |
77.03 |
92.22 |
84.38 |
91 |
Max |
55.10 |
41.28 |
79.24 |
106.77 |
97.91 |
91.99 |
SE |
0.21 |
0.15 |
0.03 |
0.30 |
0.30 |
0.02 |
p value |
- |
0.001 |
0.001 |
0.001 |
0.148 |
0.001 |
0.001 |