Dimensions of 65 Extracted Equine First Premolar Teeth.
Abstract: The equine first premolar ("wolf tooth," Triadan number 05) is frequently extracted, and although extracted teeth have been observed to vary greatly in size, published data describing tooth dimensions are limited. Total length, root length, crown height, and crown width were measured in 65 extracted wolf teeth. Dimensions, expressed as median (range) mm, were total length: 21 (12-34), root length: 13.2 (0-19.6), crown height: 7 (2-20), and crown width: 7 (2.6-16). Root length exceeded crown height in 61 of the 65 teeth. Crown height and crown width were either not correlated or poorly correlated with root length using Spearman rank correlation coefficient (ρ = -.093 and ρ = .463, respectively). Total length was poorly correlated with crown height (ρ = .443) but had a fair correlation with crown width (ρ = .646). The dimensions of the clinical crown of the tooth do not provide a good estimate of root length, although the root is usually longer than the crown.
Publication Date: 2016-01-01 PubMed ID: 28327064DOI: 10.1177/0898756416675763Google Scholar: Lookup
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- Journal Article
Summary
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The research paper focuses on the measurements of 65 extracted first premolar teeth of equines, also known as “wolf teeth“, and concludes that the visible crown of the tooth does not provide an accurate estimate of the length of the hidden root, which is typically longer.
Objective of the Research
- This research is aiming to present the empirical data on the dimensions of wolf teeth in equines, a subject area where available information is limited.
- The measurements focused on total length, root length, crown height, and crown width.
Research Methodology
- 65 extracted equine wolf teeth were used in the research.
- Each dimension of the teeth was measured, and the data were expressed as median values.
- The correlation between various dimensions was calculated using Spearman rank correlation coefficient.
Findings of the Research
- The total length of the teeth ranged between 12-34mm, with a median of 21mm.
- Root length varied from 0-19.6mm, with a median measurement of 13.2mm.
- Crown height ranged from 2-20mm, with a median of 7mm, and crown width varied from 2.6-16mm, also with a median of 7mm.
- In 61 out of the 65 teeth, the length of the root exceeded the height of the crown.
- There was either no or a poor correlation between crown height and width with the length of the root.
- Total length of the tooth showed a poor correlation with crown height but a fair correlation with crown width.
Conclusion of the Research
- The research concludes that the dimensions of the visible part or the clinical crown of the tooth do not provide a good estimate of the length of the root.
- In most cases, the root tends to be longer than the crown. This knowledge is significant in veterinary dentistry, especially when dental procedures or extractions are being planned on equines.
Cite This Article
APA
Hole SL, Manfredi JM, Clayton HM.
(2016).
Dimensions of 65 Extracted Equine First Premolar Teeth.
J Vet Dent, 33(3), 157-159.
https://doi.org/10.1177/0898756416675763 Publication
Researcher Affiliations
- 1 Pool House Equine Clinic, Crown Inn Farm, Lichfield, UK.
- 2 Large Animal Clinical Sciences Department, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA.
- 3 Michigan State University, East Lansing, MI, USA.
- 4 Sport Horse Science, LC, Mason, MI, USA.
MeSH Terms
- Animals
- Bicuspid / anatomy & histology
- Horses
- Tooth Crown / anatomy & histology
- Tooth Extraction / veterinary
- Tooth Root
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