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Updated: May 15, 2025
But the two anterior big molars of the lower jaw are seen to have each five well-marked cones, cusps or tubercles; they are quinqui-tuberculate, whilst in man the first lower molar is often quadri-tuberculate and the second even more frequently so.
The two small bicuspid "pre-molars" and the three large molars follow these on each side in each jaw. It is "quadri-tuberculate." In 60 per cent. of European lower jaws this is the case. But in 40 per cent. this tooth is quadri-tuberculate. In Polynesians, Chinese, Melanesians and negroes five tubercles are found on this tooth in 90 per cent. of the jaws examined.
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