Ageing domestic sheep(Ovis ariesL.) from growth lines in the cementum of the first incisor

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Abstract
First incisor teeth from known‐age domestic sheep were examined to determine whether annual lines developed, and to test 3 processing techniques. Fluorescing lines in undecalcified, unstained transverse sections indicated completed years in 44 % of teeth. Dark lines in decalcified, stained transverse sections indicated completed years in 8 % of teeth. Dark lines seen by reflected light in undecalcified roots ground transversely by hand indicated completed years in 62 % of teeth. Grinding by hand was the simplest, quickest, and most dependable method.