Evaluation of fracture toughness of human dentin using elastic–plastic fracture mechanics

Yan, Jiahau; Taskonak, Burak; Platt, Jeffrey A.; Mecholsky, John J.

doi:10.1016/j.jbiomech.2008.01.015

Cited by 40 publications

(31 citation statements)

References 31 publications

(43 reference statements)

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“…several biological materials, including bone (80,81,91,123), dentin (124), and nacre (125). In this work, the majority of fracture toughness and R-curve measurements shown were performed using nonlinear-elastic fracture mechanics, although for clarity, back-calculated K values are presented.…”

Section: Appendix: Quantitative Assessment Of Toughness In Bonementioning

confidence: 99%

On the Mechanistic Origins of Toughness in Bone

Launey

Buehler

Ritchie

2010

Annu. Rev. Mater. Res.

586

490

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One of the most intriguing protein materials found in nature is bone, a material composed of assemblies of tropocollagen molecules and tiny hydroxyapatite mineral crystals that form an extremely tough, yet lightweight, adaptive and multifunctional material. Bone has evolved to provide structural support to organisms, and therefore its mechanical properties are of great physiological relevance. In this article, we review the structure and properties of bone, focusing on mechanical deformation and fracture behavior from the perspective of the multidimensional hierarchical nature of its structure. In fact, bone derives its resistance to fracture with a multitude of deformation and toughening mechanisms at many size scales ranging from the nanoscale structure of its protein molecules to the macroscopic physiological scale.

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Section: Appendix: Quantitative Assessment Of Toughness In Bonementioning

confidence: 99%

On the Mechanistic Origins of Toughness in Bone

Launey

Buehler

Ritchie

2010

Annu. Rev. Mater. Res.

586

490

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“…Table 5 summarizes the major mechanical features of a tooth [5,[54][55][56][57][58]. In general, the tooth mechanical properties are dependent on the patient's age [57,59,60]; therefore, the choice of one particular material for dental applications rather than another one should ideally be done by taking into account this parameter.…”

Section: Discussionmentioning

confidence: 99%

“…Table 5. Mechanical properties of a natural tooth (data from [5,[54][55][56][57][58] Natural enamel and dentine exhibit unique characteristics and, at present, an ideal material able to match all their mechanical properties (strength, stiffness, toughness, hardness) does not exist. From this viewpoint, the glass-ceramics proposed in this work also have some limitations, but they exhibit interesting advantages compared to the majority of dental glass-ceramics commonly proposed in the literature [24].…”

Section: Discussionmentioning

confidence: 99%

Production and Characterization of Glass-Ceramic Materials for Potential Use in Dental Applications: Thermal and Mechanical Properties, Microstructure, and In Vitro Bioactivity

Baino

Verné

2017

Applied Sciences

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Abstract:Multicomponent silicate glasses and their corresponding glass-ceramic derivatives were prepared and tested for potential applications in dentistry. The glasses were produced via a melting-quenching process, ground and sieved to obtain fine-grained powders that were pressed in the form of small cylinders and thermally treated to obtain sintered glass-ceramic samples. X-ray diffraction investigations were carried out on the materials before and after sintering to detect the presence of crystalline phases. Thermal analyses, mechanical characterizations (assessment of bending strength, Young's modulus, Vickers hardness, fracture toughness), and in vitro bioactivity tests in simulated body fluid were performed. On the basis of the acquired results, different potential applications in the dental field were discussed for the proposed glass-ceramics. The use of such materials can be suggested for either restorative dentistry or dental implantology, mainly depending on their peculiar bioactive and mechanical properties. At the end of the work, the feasibility of a novel full-ceramic bilayered implant was explored and discussed. This implant, comprising a highly bioactive layer expected to promote osteointegration and another one mimicking the features of tooth enamel, can have an interesting potential for whole tooth substitution.

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“…Regarding the study of bone fracture resistance, several fracture mechanics test methods have been used to evaluate toughness, including: (i) linear-elastic fracture mechanics (LEFM) fracture toughness (K Ic ) method [4,21,25,[46][47][48], (ii) nonlinear fracture mechanics (NLFM) fracture toughness (J c ) method [2,7,49,50], (iii) determination of crack-resistance curves (R-curves) [2,6,7,19,51], and (iv) other nonlinear methods [9,52]. The choice of a specific method is a researcher's prerogative.…”

Section: Introductionmentioning

confidence: 99%