Enamel incremental periodicity in the pig‐tailed macaque: A polychrome fluorescent labeling study of dental hard tissues

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Abstract
Bromage and Dean originally outlined a nondestructive method for the study of enamel formation and concluded that early hominids resembled the extant apes more closely than they did modern humans in their rates of growth and maturation. The method used assumed that an enamel circadian rhythmicity was referable to a longer near‐weekly period represented by perikymata (periodic surface growth features). This assumption became a matter of debate and discussion. In this study, developing teeth in Macaca nemestrina were labeled with polychrome fluorescent dyes. Examination of the distribution of these dyes in two sectioned teeth provides experimental confirmation of enamel circadian periodicity.