Correspondence between enamel hypoplasia and odontometric bilateral asymmetry in Australian twins
Article first published online: 6 JUL 2004
Copyright © 2004 Wiley-Liss, Inc.
American Journal of Physical Anthropology
Volume 126, Issue 2, pages 177–182, February 2005
How to Cite
Corruccini, R. S., Townsend, G. C. and Schwerdt, W. (2005), Correspondence between enamel hypoplasia and odontometric bilateral asymmetry in Australian twins. Am. J. Phys. Anthropol., 126: 177–182. doi: 10.1002/ajpa.20113
- Issue published online: 13 JAN 2005
- Article first published online: 6 JUL 2004
- Manuscript Accepted: 25 JUL 2003
- Manuscript Received: 28 JAN 2003
- enamel hypoplasia;
- directional asymmetry;
- fluctuating asymmetry;
Four aspects of enamel hypoplasia of the maxillary central incisor and mandibular canine (hypoplasia presence, width, cumulative width, and crown position) were correlated with directional and fluctuating measures of bilateral odontometric asymmetry in a large panel (n = 950) of South Australian twins. Hypoplasia and asymmetry are thought to reflect general developmental disruption, but they show few correlations beyond the expected statistical type I error. This may relate to differences in their specific etiology, the composite nature of overall crown dimensions, a general lack of stress, and the extended period of formation of dental crowns. In contrast, asymmetry is marginally more detectable in a subsample separated according to hypoplastic teeth, suggesting that correspondence may be clearer in comparisons at the population rather than individual level. The most notable difference is the greater variability of asymmetry measures in hypoplastic individuals. Am J Phys Anthropol 126:177–182, 2005. © 2004 Wiley-Liss, Inc.