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Search Publications by Brian R. Lawn

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Displaying 1 - 25 of 100

THE COMPELLING CASE FOR INDENTATION AS A FUNCTIONAL EXPLORATORY AND CHARACTERIZATION TOOL

Author(s)
Robert F. Cook, David B. Marshall, Nitin P. Padture, Michelle L. Oyen, Antonia Pajares, Jodie E. Bradby, Ivar E. Reimanis, Rajan Tandon, Trevor F. Page, George M. Pharr, Brian R. Lawn
The utility of indentation testing for characterizing a wide range of mechanical properties of brittle materials is highlighted in light of recent articles

MECHANICS ANALYSIS OF MOLAR TOOTH SPLITTING

Author(s)
Amir Barani, Brian R. Lawn, Mark Bush, Herzl Chai
A model for the splitting of teeth from wedge loading of molar cusps from a round indenting object is presented. The model is developed in two parts: first, a

Tooth chipping can reveal bite forces and diets of fossil hominins

Author(s)
Paul Constantino, James J. Lee, H Chai, Bernhard Zipfel, Charles Ziscovici, Brian R. Lawn, Peter Lucas
Fossil hominin tooth enamel often exhibits antemortem edge chipping (Robinson 1954; Tobias 1967; Wallace 1973). Here we apply a simple fracture nist-equation to

GRADED STRUCTURES FOR ALL-CERAMIC RESTORATIONS

Author(s)
Yu Zhang, H Chai, Brian R. Lawn
One failure mode of all-ceramic crown restorations is radial cracking at the cementation surface, from occlusally-induced flexure of the stiffer crown layer on

Teeth: Among Nature's Most Durable Biocomposites

Author(s)
Brian R. Lawn, James J. Lee, H Chai
This paper addresses the durability of natural teeth from a materials perspective. Teeth are depicted as 'smart' biocomposites, highly resistant to cumulative

MORPHOLOGY AND FRACTURE OF ENAMEL

Author(s)
Sang-Won Myoung, James J. Lee, Paul Constantino, Peter Lucas, Brian R. Lawn
Teeth are remarkable biological structures, brittle but resilient. Here we examine the inter-relation between enamel morphology and crack resistance by

The feeding biomechanics and dietary ecology of Australopithecus africanus

Author(s)
Brian R. Lawn, David Strait, Gerhard Weber, Simon Neubauer, Janine Chalk, Brian Richmond, Peter Lucas, Mark Spencer, Caitlin Schrein, Paul Dechow, Callum Ross, Ian Grosse, Barth Wright, Paul Constantino, Bernard Wood, Qian Wang, Dennis Slice, Craig Byron, Amanda Smith
The African Plio-Pleistocene hominins known as australopiths evolved a distinctive craniofacial morphology that traditionally has been interpreted as a dietary

Predicting Failure in Mammalian Enamel

Author(s)
Brian R. Lawn, James J. Lee, Paul Constantino, Peter Lucas
Dentition is a vital element of human and animal function, yet there is little fundamental knowledge about how tooth enamel endures under stringent oral

Bulk Silicon Is Susceptible to Fatigue

Author(s)
Sanjit Bhowmick, Juan J. Melendez-Martinez, Brian R. Lawn
It has long been held that bulk silicon is immune from fatigue. We present contrary evidence demonstrating severe fatigue in macroscale cracks produced in