Upper Lower  
Early middle age I C P M Total I C P M Total Grand total
Observed 12 8 52 121 193 30 15 46 98 189 382
Wear score 22 20 96 248 386 99 43 88 206 436 822
Average 1.83 2.50 1.85 2.05 2.00 3.30 2.87 1.91 2.10 2.31 2.15
SD 0.83 1.07 0.36 0.78 0.71 0.99 1.00 0.36 0.96 0.99 0.88
Early middle age  vs  Late middle age P=0.079ns P=0.501ns P<0.05 L>E P<0.001L>E P<0.001L>E P=0.292ns P=0.092ns P<0.05 L>E P<0.001L>E P<0.001L>E P<0.001 L>E
Late middle age  
Observed 9 10 27 47 93 7 5 16 43 71 164
Wear score 22 26 65 128 241 26 19 35 122 202 443
Average 2.67 2.5 2.41 2.68 2.58 3.71 3.8 2.44 2.84 2.9 2.7
SD 1.32 1.08 1.19 1.22 1.19 0.49 1.1 0.81 1.4 1.26 1.23
I: Incisors; C: Canines; P: Premolars; M: Molars in tooth type distribution.
ns: not significant
E: Early middle age; L: Late middle age
Table 2: Degree of dental wear of Somali people in Early middle age and Late middle age.
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