Crown dimensions and occlusal surface wear rate and wear plane were evaluated using paired first and second mandibular molars from a sample of 84 Early Agricultural period (1600 B.C.-A.D. 200) skeletons from northwest Mexico. Although this period represents a major shift in subsistence strategies in the Sonoran Desert, from food-foraging to agriculture, archaeological and dental pathology studies have identified this period as one of relative dietary stability. It was therefore predicted that very little variation in occlusal wear would have occurred between the early phase (San Pedro: 1600-800 B.C.) and late phase (Cienega: 800 B.C.-A.D. 200). Comparison of crown diameters identified some phenotypic differences between sexes but not between archaeological phases. Molar occlusal surfaces were then divided into four quadrants, and wear scores recorded for each quadrant. Principle axis analysis was performed between total wear scores of paired, adjacent first and second mandibular molars to assess rate and occlusal wear plane over time. The analysis demonstrated that both wear rate and wear plane increased from the early to the late phase of the Early Agricultural period. These results indicate that although diet may have indeed remained stable during this period in the Sonoran Desert increases in the rate of wear and wear plane may reflect changes in food-processing techniques. It is suggested that more intensive processing of agricultural products during the Cienega phase simultaneously softened the diet to create more tooth-contact wear and introduced more grit to cause faster and more angled wear on the molar occlusal surfaces.

译文

使用来自墨西哥西北部84个早期农业时期 (200 B.C.-A.D 1600个) 骨骼的成对的第一和第二下颌磨牙评估了牙冠尺寸和咬合表面磨损率和磨损平面。尽管这一时期代表了索诺兰沙漠生存策略的重大转变,从觅食到农业,但考古和牙科病理学研究已将这一时期确定为相对饮食稳定性之一。因此,据预测,在早期阶段 (San Pedro: 1600-800 b.c.) 和晚期阶段 (Cienega: 800 B.C.-A.D. 200) 之间,咬合磨损将发生非常小的变化。冠直径的比较发现了性别之间的一些表型差异,但在考古阶段之间却没有。然后将磨牙咬合表面分为四个象限,并记录每个象限的磨损分数。在成对的,相邻的第一和第二下颌磨牙的总磨损分数之间进行了主轴分析,以评估随时间推移的速率和咬合磨损平面。分析表明,从农业早期的早期到晚期,磨损率和磨损平面都有所增加。这些结果表明,尽管在此期间,索诺兰沙漠的饮食确实保持稳定,但磨损率的增加和磨损率的增加可能反映了食品加工技术的变化。建议在Cienega阶段对农产品进行更深入的加工,同时软化饮食,以产生更多的牙齿接触磨损,并引入更多的砂砾,以在磨牙咬合表面上引起更快,更角度的磨损。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录