Biomechanical evaluation of equine masticatory action: position and curvature of equine cheek teeth and age-related changes

The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology
Stefanie HuthmannCarsten Staszyk

Abstract

The equine cheek tooth battery is part of a very dynamic system. The aim of this study was to investigate whether the curvature and position of the teeth are also involved in such dynamical processes. The alveolar crest was labelled with a radiodense marker (48 cadaver heads, 15 skulls) and laterolateral radiographs were taken. Then a geometrical method was elaborated to determine a cheek tooth's curvature and its position by means of specific angles. This method respects the remarkable changes of the equine dentition throughout life by considering two items: (1) the alveolar crest was taken as a constant landmark, (2) the central axis of the curved dental crown was determined by calculation of a linear regression equation. This equation considered several geometrically determined points on the curved dental crown which had been marked in the radiographs. Our study yielded the following results: Mandibular cheek teeth became more curved with age, but their positions (represented by the so-called mesio-occlusal angle between tooth and alveolar crest) did not change significantly. In maxillary cheek teeth, however, the mesio-occlusal angle became larger with age (indication of change of dental position), while their curvature did...Continue Reading

References

Nov 1, 1994·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·C K ChanM S Cooke
Feb 1, 1997·British Journal of Orthodontics·M B Moore, J P McDonald
Mar 18, 2000·European Journal of Orthodontics·R Häsler, B Ingervall
Jun 21, 2003·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Wolfgang HenningerElisabeth Mayrhofer
Feb 25, 2005·The Veterinary Journal·P M Dixon, I Dacre

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Citations

Aug 7, 2013·The Veterinary Clinics of North America. Equine Practice·Nicole du Toit, Bayard A Rucker
Nov 25, 2011·The Veterinary Journal·R MarshallP M Dixon
Jul 28, 2016·The Veterinary Clinics of North America. Equine Practice·Victoria M Nicholls, Neil Townsend
Aug 9, 2019·The Veterinary Record·Marcin SzulakowskiKerstin Gerlach

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