Schulz P D
Am J Phys Anthropol. 1977 Jan;46(1):87-91. doi: 10.1002/ajpa.1330460112.
Abraded grooves have been observed on the anterior teeth of all the adults in a small population of prehistoric California Indians. These dental effects show considerable variety, appearing on maxillary and mandibular teeth, on approximal and occulusal surfaces, and either isolated or bilaterally aligned. Although many of the grooves are indistinguishable from those reported for other prehistoric populations, their variety illustrates the limited applicability of etiological hypotheses previously proposed to account for such effects. It is suggested that the grooves represent traces of a task activity involving the pulling of fibrous materials across the teeth.
在一小群史前加利福尼亚印第安人的所有成年人的前牙上都观察到了磨损凹槽。这些牙齿上的痕迹表现出相当大的多样性，出现在上颌牙和下颌牙上，邻面和咬合面上，且要么是孤立的，要么是双侧对齐的。尽管许多凹槽与其他史前人群报告的凹槽难以区分，但它们的多样性说明了先前提出的用于解释此类痕迹的病因假说的适用性有限。有人认为，这些凹槽代表了一项涉及将纤维材料拉过牙齿的任务活动的痕迹。
