Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia.
Univ. Bordeaux, CNRS, MCC, PACEA, Pessac, France.
Am J Biol Anthropol. 2024 May;184(1):e24926. doi: 10.1002/ajpa.24926. Epub 2024 Feb 29.
The analysis of dental wear provides a useful approach for dietary and cultural habit reconstructions of past human populations. The analysis of macrowear patterns can also be used to better understand the individual chewing behavior and to investigate the biomechanical responses during different biting scenarios. The aim of this study is to evaluate the diet and chewing performance of the adult Neanderthal Bourgeois-Delaunay 1 (BD 1) and to investigate the relationship between wear and cementum deposition under mechanical demands.
The macrowear pattern of BD 1 was analyzed using the occlusal fingerprint analysis method. We propose a new method for the bilateral measurement of the cementum volume along both buccal and lingual sides of the molar root.
BD 1's anterior dentition is more affected by wear compared to the posterior one. The macrowear pattern suggest a normal chewing behavior and a mixed-diet coming from temperate environments. The teeth on the left side of the mandible display greater levels of wear, as well as the buccal side of the molar crowns. The cementum analysis shows higher buccal volume along the molar roots.
BD1 could have been preferably chewing on the left side of the mandible. The exploitation of various food resources suggested by the macrowear analysis is compatible with the environmental reconstructions. Finally, the greater wear on the buccal side of the molar occlusal surface and the greater volume of cementum in that side of the molar roots offers a preliminary understanding about the potential correlation between dental wear and cementum deposition.
对牙齿磨损的分析为重建过去人类群体的饮食和文化习惯提供了一种有用的方法。宏观磨损模式的分析也可用于更好地了解个体咀嚼行为，并研究不同咬合情况下的生物力学反应。本研究旨在评估成年尼安德特人 Bourgeois-Delaunay 1（BD1）的饮食和咀嚼性能，并研究在机械需求下磨损与牙骨质沉积之间的关系。
使用咬合指纹分析方法分析 BD1 的宏观磨损模式。我们提出了一种新的方法，用于沿磨牙根的颊侧和舌侧双侧测量牙骨质体积。
BD1 的前牙列比后牙列受磨损的影响更大。宏观磨损模式表明存在正常的咀嚼行为和来自温带环境的混合饮食。下颌左侧的牙齿磨损程度更高，磨牙冠的颊侧也是如此。牙骨质分析显示磨牙根的颊侧牙骨质体积较大。
BD1 可能更倾向于在左侧下颌咀嚼。宏观磨损分析中所提出的对各种食物资源的利用与环境重建是一致的。最后，磨牙咬合面颊侧的磨损程度更大，以及磨牙根颊侧牙骨质体积更大，这为理解牙齿磨损和牙骨质沉积之间的潜在相关性提供了初步认识。
