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Can I read Fractography and Fracture Toughness of Human Dentin on EtoBox?
Fractography and Fracture Toughness of Human Dentin by J. Yan; B. Taskonak; J.J. Mecholsky Jr. is a Engineering article available to read on EtoBox.
What is Fractography and Fracture Toughness of Human Dentin about?
Dentin, the mineralized tissue forming the bulk of the tooth, serves as an energy-absorbing cushion for the hard, wear-resistant enamel and protects the inner soft tissues. Several studies used fracture mechanics methods to study the fracture toughness of dentin. However, all of them utilized precracks and cannot be used to estimate the intrinsic critical flaw size of dentin. We applied quantitative fractography to study the fracture pattern and fracture toughness of human dentin. Sixteen specimens were prepared from the coronal dentin and fractured in three-point flexure. Fracture surfaces were examined using a scanning electron microscope and the fracture toughness was calculated using a fracture mechanics equation. It was found that human dentin has a fracture surface similar to those of brittle materials. Twist hackle markings were observed and were used to identify the fracture origins. Average fracture toughness of all specimens was found to be 2.3 MPa m 1/2 and the average critical flaw size was estimated to 120 μm. It is suggested that fractography is a promising technique in analyzing the fracture of dentin under catastrophic failure.
Who reads Fractography and Fracture Toughness of Human Dentin?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- J. Yan; B. Taskonak; J.J. Mecholsky Jr.
- Publisher
- Elsevier ; Elsevier BV (ISSN 1751-6161)
- Published
- 2009
- Language
- EN
- Field
- Engineering (Physical Sciences)