Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams
Abstract Dental enamel is the most mineralised hard tissue with a complex hierarchically organised anisotropic structure and it protects human teeth from mechanical damage during the dental function. Due to the sample size constraints, the available data for quantitative evaluation of the fracture t...
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Wiley
2021
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oai:doaj.org-article:8caef53ded22490abf5f9422dcca4e662021-11-12T15:58:04ZMeasuring fracture toughness of human dental enamel at small scale using notched microcantilever beams2405-451810.1049/bsb2.12022https://doaj.org/article/8caef53ded22490abf5f9422dcca4e662021-12-01T00:00:00Zhttps://doi.org/10.1049/bsb2.12022https://doaj.org/toc/2405-4518Abstract Dental enamel is the most mineralised hard tissue with a complex hierarchically organised anisotropic structure and it protects human teeth from mechanical damage during the dental function. Due to the sample size constraints, the available data for quantitative evaluation of the fracture toughness of human enamel is very limited. Here, on the basis of microstructural characterisation, the fracture toughness of human dental enamel at small scale with respect to orientation was measured using notched microcantilever beams fabricated by focussed ion beam. The fracture toughness of human enamel with perpendicular orientation was measured to be 1.244 ± 0.12 MPa · m1/2, 80% tougher than that of in‐plane parallel orientation (0.698 ± 0.18 MPa · m1/2). The present results are expected to provide deep insights into cusp fractures and the synthesis of enamel‐like restorative materials.Kangjie ChuCancan ZhaoFuzeng RenWileyarticlehydroxyapatitemicromechanical propertiestexturetooth enamelBiotechnologyTP248.13-248.65BiochemistryQD415-436ENBiosurface and Biotribology, Vol 7, Iss 4, Pp 228-232 (2021) |
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EN |
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hydroxyapatite micromechanical properties texture tooth enamel Biotechnology TP248.13-248.65 Biochemistry QD415-436 |
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hydroxyapatite micromechanical properties texture tooth enamel Biotechnology TP248.13-248.65 Biochemistry QD415-436 Kangjie Chu Cancan Zhao Fuzeng Ren Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams |
| description |
Abstract Dental enamel is the most mineralised hard tissue with a complex hierarchically organised anisotropic structure and it protects human teeth from mechanical damage during the dental function. Due to the sample size constraints, the available data for quantitative evaluation of the fracture toughness of human enamel is very limited. Here, on the basis of microstructural characterisation, the fracture toughness of human dental enamel at small scale with respect to orientation was measured using notched microcantilever beams fabricated by focussed ion beam. The fracture toughness of human enamel with perpendicular orientation was measured to be 1.244 ± 0.12 MPa · m1/2, 80% tougher than that of in‐plane parallel orientation (0.698 ± 0.18 MPa · m1/2). The present results are expected to provide deep insights into cusp fractures and the synthesis of enamel‐like restorative materials. |
| format |
article |
| author |
Kangjie Chu Cancan Zhao Fuzeng Ren |
| author_facet |
Kangjie Chu Cancan Zhao Fuzeng Ren |
| author_sort |
Kangjie Chu |
| title |
Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams |
| title_short |
Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams |
| title_full |
Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams |
| title_fullStr |
Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams |
| title_full_unstemmed |
Measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams |
| title_sort |
measuring fracture toughness of human dental enamel at small scale using notched microcantilever beams |
| publisher |
Wiley |
| publishDate |
2021 |
| url |
https://doaj.org/article/8caef53ded22490abf5f9422dcca4e66 |
| work_keys_str_mv |
AT kangjiechu measuringfracturetoughnessofhumandentalenamelatsmallscaleusingnotchedmicrocantileverbeams AT cancanzhao measuringfracturetoughnessofhumandentalenamelatsmallscaleusingnotchedmicrocantileverbeams AT fuzengren measuringfracturetoughnessofhumandentalenamelatsmallscaleusingnotchedmicrocantileverbeams |
| _version_ |
1718430381372342272 |