Natural Selection on Hydroxyapatite Fiber Orientations for Resisting Damage of Enamel
Abstract
:1. Introduction
2. Materials and Methods
2.1. Specimen Preparation
2.2. Nanoindentation Tests
2.3. Nanoscratch Tests
2.4. Statistical Analysis
3. Results and Discussion
3.1. HAp Fiber Orientations in Occlusal Surface and Longitudinal Section
3.2. Effect of Fiber Orientation on Mechanical Properties of Enamel
3.3. Effect of Fiber Orientation on Microfriction Behavior of Enamel
3.4. Effect of Fiber Orientation on the Wear Behavior of Enamel
3.5. Influence Mechanism of Hydroxyapatite Alignment on Tooth Enamel Properties
4. Conclusions
- There are two types of orientation of HAp fibers in the outer layer of tooth enamel: parallel and perpendicular to the occlusal surface.
- The arrangements of HAp fibers significantly influenced the mechanical and microtribological behavior of human tooth enamel. HAp fibers with long axes parallel to the surface had higher hardness and elastic modulus and showed better microtribological behavior.
- Teeth resist damaging fractures by combining hard and soft structures.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Shen, J.; Xin, H.; Li, X.; Kong, Y.; Zhu, S.; Zhou, Y.; Fan, Y.; Xia, J. Natural Selection on Hydroxyapatite Fiber Orientations for Resisting Damage of Enamel. Coatings 2024, 14, 1122. https://doi.org/10.3390/coatings14091122
Shen J, Xin H, Li X, Kong Y, Zhu S, Zhou Y, Fan Y, Xia J. Natural Selection on Hydroxyapatite Fiber Orientations for Resisting Damage of Enamel. Coatings. 2024; 14(9):1122. https://doi.org/10.3390/coatings14091122
Chicago/Turabian StyleShen, Junfu, Haiyan Xin, Xiaopan Li, Yiyun Kong, Siqi Zhu, Yuankai Zhou, Yujie Fan, and Jing Xia. 2024. "Natural Selection on Hydroxyapatite Fiber Orientations for Resisting Damage of Enamel" Coatings 14, no. 9: 1122. https://doi.org/10.3390/coatings14091122