The correlation between biotribological function and structural characteristics of bamboo rat teeth

IF 1.6 Q4 ENGINEERING, BIOMEDICAL Biosurface and Biotribology Pub Date : 2022-11-15 DOI:10.1049/bsb2.12054
Zhenwu Ning, Zhongrong Zhou, Jing Zheng
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Abstract

Chinese bamboo rats consume a diet that consists mainly mechanically demanding bamboo. The ability of the rats to process food depends on the capacity of their teeth to resist wear during biting and chewing. The mechanisms of the bamboo rat teeth were determined by investigating and correlating the structure and tribological properties of the teeth. The rat's incisor has a cutting-edge cusp and outer enamel iron pigmentation, making the teeth harder, more resistant to acid attacks, and improving the resistance to cracking. Additionally, the incisor is designed to self-sharpen. The complex morphology at the macroscale, and the three-dimensional fabric body formed by densely packed rods and inter-rods at the microscale of molar enamel benefit molar rapid capture and effective breaking of bamboo, resisting the high stresses required to process bamboo without wear. The results of the structure–function relations of bamboo rat teeth in this study may provide new ideas for improving plant cutting and grinding tools.

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竹大鼠牙齿生物摩擦学功能与结构特征的关系
中国竹鼠的饮食主要由机械需求的竹子组成。老鼠处理食物的能力取决于它们的牙齿在咬和咀嚼过程中抵抗磨损的能力。通过对竹制大鼠牙的结构和摩擦学性能的研究,确定竹制大鼠牙的形成机制。大鼠的门牙有尖端的牙尖和外层的牙釉质铁色素沉着,使牙齿更坚硬,更耐酸,并提高抗裂性。此外,门牙设计为自磨。宏观尺度上的复杂形态和微观尺度上牙釉质棒与棒间密集排列形成的立体织物体,有利于牙釉质对竹子的快速捕获和有效断裂,抵抗加工竹子所需的高应力而不磨损。本研究结果可为改进植物切削和磨削工具提供新的思路。
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来源期刊
Biosurface and Biotribology
Biosurface and Biotribology Engineering-Mechanical Engineering
CiteScore
1.70
自引率
0.00%
发文量
27
审稿时长
11 weeks
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