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. 2013 Jul 30;5:51–56. doi: 10.2147/CCIDE.S49403

Table 3.

Numbers of extractions according to tooth type in the maxilla and mandible

Tooth Jaw Age group, years
Total
10–20 21–30 31–40 41–50 51–60 61–70 >70
Third molar Maxillary 47 99 47 23 13 1 2 232 (14.93%)
Mandibular 65 135 43 19 9 3 0 274 (17.63%)
Second molar Maxillary 4 22 19 21 11 4 2 83 (5.34%)
Mandibular 4 20 14 10 9 4 1 62 (3.99%)
First molar Maxillary 27 29 32 21 10 3 4 126 (8.10%)
Mandibular 54 36 20 27 12 4 1 154 (9.91%)
Second premolar Maxillary 15 28 13 11 11 5 2 85 (5.47%)
Mandibular 42 8 12 10 17 1 0 90 (5.79%)
First premolar Maxillary 109 37 10 13 10 4 4 187 (12.03%)
Mandibular 68 21 3 7 15 3 0 117 (7.52%)
Canine Maxillary 4 3 6 12 3 3 2 33 (2.12%)
Mandibular 1 2 3 3 11 2 3 25 (1.60%)
Lateral incisor Maxillary 3 1 6 0 2 0 0 12 (0.77%)
Mandibular 0 0 6 3 14 1 0 24 (1.54%)
Central incisor Maxillary 6 7 6 5 1 2 0 27 (1.73%)
Mandibular 0 2 5 7 8 1 0 23 (1.48%)

Notes: Maxillary, χ2 = 220.621, degrees of freedom = 42, P < 0.0001; mandibular, X2 = 348.727, degrees of freedom = 42, P < 0.001.