Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analyses
Summary: The teeth of limbed vertebrates used for capturing and processing food are composed of mineralized dentine covered by hypermineralized enamel, the hardest material organisms produce. Here, we combine scanning probe microscopy, depth sensing, and spectromicroscopy (SR-FTIR) to characterize t...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004222019514 |
| _version_ | 1797946161757159424 |
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| author | Chen-Tzu Chiu Jyun-Kai Cao Pei-Wen Wang Ya-Na Wu Yao-Chang Lee Yeau-Ren Jeng Dar-Bin Shieh Robert R. Reisz |
| author_facet | Chen-Tzu Chiu Jyun-Kai Cao Pei-Wen Wang Ya-Na Wu Yao-Chang Lee Yeau-Ren Jeng Dar-Bin Shieh Robert R. Reisz |
| author_sort | Chen-Tzu Chiu |
| collection | DOAJ |
| description | Summary: The teeth of limbed vertebrates used for capturing and processing food are composed of mineralized dentine covered by hypermineralized enamel, the hardest material organisms produce. Here, we combine scanning probe microscopy, depth sensing, and spectromicroscopy (SR-FTIR) to characterize the surface ultrastructural topography, nanotribology, and chemical compositions of mammal species with different dietary habits, including omnivorous humans. Our synergistic approach shows that enamel with greater surface hardness or thickness exhibited a more salient gradient feature from the tooth surface to the dentino-enamel junction (DEJ) one that corresponds to the in situ phosphate-to-amide ratio. This gradient feature of enamel covering softer dentine is the determining factor of the amazingly robust physical property of this unique biomaterial. It provides the ability to dissipate stress under loading and prevent mechanical failure. Evolutionary change in the biochemical composition and biomechanical properties of mammalian dentition is related to variations in the oral processing of different food materials. |
| first_indexed | 2024-04-10T21:06:30Z |
| format | Article |
| id | doaj.art-6def011ec4b34f91b89fa112c06f3e63 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-04-10T21:06:30Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-6def011ec4b34f91b89fa112c06f3e632023-01-22T04:40:26ZengElsevieriScience2589-00422023-01-01261105679Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analysesChen-Tzu Chiu0Jyun-Kai Cao1Pei-Wen Wang2Ya-Na Wu3Yao-Chang Lee4Yeau-Ren Jeng5Dar-Bin Shieh6Robert R. Reisz7School of Dentistry and Institute of Oral Medicine, National Cheng Kung University, Tainan 701401, TaiwanDepartment of Mechanical Engineering, National Chung Cheng University, Chia-Yi 62100, TaiwanSchool of Dentistry and Institute of Oral Medicine, National Cheng Kung University, Tainan 701401, Taiwan; Center of Applied Nanomedicine and Core Facility Center, National Cheng Kung University, Tainan 701401, TaiwanSchool of Dentistry and Institute of Oral Medicine, National Cheng Kung University, Tainan 701401, Taiwan; iMANI Center of the National Core Facility for Biopharmaceuticals, National Science and Technology Concil, Taipei 106214, TaiwanLife Science Group, National Synchrotron Radiation Center, Hsinchu 30076, Taiwan; Department of Optics and Photonics, National Central University, Chung-Li 32001, Taiwan; Department of Chemistry, National Tsing Hua University, Hsinchu 30013, TaiwanDepartment of Mechanical Engineering, National Chung Cheng University, Chia-Yi 62100, Taiwan; Department of Biomedical Engineering, National Cheng Kung University, Tainan 70101, Taiwan; Medical Device Innovation Center, National Cheng Kung University, Tainan 70101, Taiwan; Academy of Innovative Semiconductor and Sustainable Manufacturing, National Cheng Kung University, Tainan 70101, Taiwan; Corresponding authorSchool of Dentistry and Institute of Oral Medicine, National Cheng Kung University, Tainan 701401, Taiwan; Center of Applied Nanomedicine and Core Facility Center, National Cheng Kung University, Tainan 701401, Taiwan; iMANI Center of the National Core Facility for Biopharmaceuticals, National Science and Technology Concil, Taipei 106214, Taiwan; Department of Stomatology, National Cheng Kung University Hospital, Tainan 704302, Taiwan; Corresponding authorInternational Centre of Future Science, Dinosaur Evolution Research Center, Jilin University, Changchun, Jilin 130012, China; Department of Biology, University of Toronto Mississauga, Mississauga, ON, Canada; Corresponding authorSummary: The teeth of limbed vertebrates used for capturing and processing food are composed of mineralized dentine covered by hypermineralized enamel, the hardest material organisms produce. Here, we combine scanning probe microscopy, depth sensing, and spectromicroscopy (SR-FTIR) to characterize the surface ultrastructural topography, nanotribology, and chemical compositions of mammal species with different dietary habits, including omnivorous humans. Our synergistic approach shows that enamel with greater surface hardness or thickness exhibited a more salient gradient feature from the tooth surface to the dentino-enamel junction (DEJ) one that corresponds to the in situ phosphate-to-amide ratio. This gradient feature of enamel covering softer dentine is the determining factor of the amazingly robust physical property of this unique biomaterial. It provides the ability to dissipate stress under loading and prevent mechanical failure. Evolutionary change in the biochemical composition and biomechanical properties of mammalian dentition is related to variations in the oral processing of different food materials.http://www.sciencedirect.com/science/article/pii/S2589004222019514Evolutionary biologyMaterials scienceMaterials chemistryBiomaterialsMaterials structure |
| spellingShingle | Chen-Tzu Chiu Jyun-Kai Cao Pei-Wen Wang Ya-Na Wu Yao-Chang Lee Yeau-Ren Jeng Dar-Bin Shieh Robert R. Reisz Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analyses iScience Evolutionary biology Materials science Materials chemistry Biomaterials Materials structure |
| title | Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analyses |
| title_full | Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analyses |
| title_fullStr | Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analyses |
| title_full_unstemmed | Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analyses |
| title_short | Mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation FTIR analyses |
| title_sort | mammalian tooth enamel functional sophistication demonstrated by combined nanotribology and synchrotron radiation ftir analyses |
| topic | Evolutionary biology Materials science Materials chemistry Biomaterials Materials structure |
| url | http://www.sciencedirect.com/science/article/pii/S2589004222019514 |
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