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Article
The assessment of jaw movement direction from dental microwear
Article first published online: 27 APR 2005
DOI: 10.1002/ajpa.1330630110
Copyright © 1984 Wiley-Liss, Inc., A Wiley Company
1096-8644/asset/cover.gif?v=1&s=c25957633aab6b6ac1922fea9d9a5103f0357fec "American Journal of Physical Anthropology")
Additional Information
How to Cite
Gordon, K. D. (1984), The assessment of jaw movement direction from dental microwear. Am. J. Phys. Anthropol., 63: 77–84. doi: 10.1002/ajpa.1330630110
Publication History
- Issue published online: 27 APR 2005
- Article first published online: 27 APR 2005
- Manuscript Accepted: 8 SEP 1983
- Manuscript Received: 1 JUL 1983
- Abstract
- References
- Cited By
Keywords:
- Dental Microwear;
- Jaw Mechanics;
- Primates;
- Wear Striation;
- Thegosis;
- Orthal Retraction
Abstract
In order to resolve several controversies about unusual jaw movements such as thegosis and orthal retraction, information about direction of jaw movement is essential. Ryan (1979a,b) proposed that asymmetry of microwear striations might provide such data. In vivo occurrences of asymmetric striations on chimpanzee molars are presented and analyzed. Results suggest that either thegosis contacts commonly occur on chimpanzee molars or that Ryan's model, as developed in vitro, does not accurately apply to naturally occurring molar microwear.