Department of Anthropology, The Ohio State University, Columbus, Ohio, USA.
Institute of Social Research and Data Innovation, University of Minnesota, Minneapolis, Minnesota, 55455, USA.
Am J Phys Anthropol. 2021 Apr;174(4):832-838. doi: 10.1002/ajpa.24238. Epub 2021 Feb 1.
Standard methods of recording occlusal dental wear are problematic in that they either do not allow for individual variation of wear or are not designed to allow for comparisons of wear patterns. In this article, we (a) present a novel method for recording and analyzing molar wear, and (b) evaluate this method in light of existing methods.
Eighty-two lower mandibular first molars from two regions (medieval Denmark, prehistoric Ohio Valley) were used to assess the method for replicability (intra and inter observer error) and accuracy (comparison to established methods of recording wear). Wear scores were recorded using the MolWear Android App (Beta) by both authors, and established methods of Smith and Scott by the first author. Intraobserver and interobserver error and comparison of the three methods were compared using Spearman's correlation coefficients.
The MolWear method presented high intraobserver (r = 0.985, p < 0.01) and interobserver (r = 0.978, p < 0.01) repeatability. Compared to other methods, the method was strongly correlated with Smith (r = 0.962, p < 0.01) and Smith (r = 0.891, p < 0.01).
The new MolWear method provides an improved way of measuring occlusal molar wear. This method bridges the gaps between established methods, performing comparatively while capturing more information about the distribution of wear in addition to the extent of wear. This method should be used for research comparing interpopulation or intrapopulation quantity of dental wear. While designed for a bioarchaeological population, this method could extend to any Y5 molar including nonhuman primates and hominins.
记录牙合面磨损的标准方法存在问题，因为它们要么不允许个体磨损的变化，要么不是为了允许比较磨损模式而设计的。在本文中，我们（a）提出了一种记录和分析磨牙磨损的新方法，（b）根据现有方法评估该方法。
使用来自两个地区（中世纪丹麦、史前俄亥俄河谷）的 82 个下颌第一磨牙来评估该方法的可重复性（观察者内和观察者间误差）和准确性（与记录磨损的现有方法进行比较）。两位作者均使用 MolWear Android App（Beta）记录磨损评分，第一作者使用 Smith 和 Scott 的既定方法记录磨损评分。使用 Spearman 相关系数比较观察者内和观察者间误差以及三种方法的比较。
MolWear 方法呈现出高度的观察者内（r = 0.985，p < 0.01）和观察者间（r = 0.978，p < 0.01）重复性。与其他方法相比，该方法与 Smith 高度相关（r = 0.962，p < 0.01）和 Smith （r = 0.891，p < 0.01）。
新的 MolWear 方法提供了一种改进的测量磨牙牙合面磨损的方法。该方法弥补了既定方法之间的差距，在比较的同时，除了磨损程度外，还能更全面地捕捉到磨损分布的信息。这种方法应该用于比较不同人群或同一人群内牙齿磨损量的研究。虽然该方法是为生物考古人群设计的，但它可以扩展到任何 Y5 磨牙，包括非人类灵长类动物和人类。
