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Quintessence Publishing: Journals: OFPH
Journal of Oral & Facial Pain and Headache

Edited by Barry J. Sessle, BDS, MDS, BSc, PhD, FRSC

Official Journal of the American Academy of Orofacial Pain,
the European, Asian, and Ibero-Latin Academies of Craniomandibular
Disorders, and the Australian Academy of Orofacial Pain

ISSN 2333-0384 (print) • ISSN 2333-0376 (online)

Publication:
Summer 1995
Volume 9 , Issue 3

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The degree to which dental attrition in modern society is a function of age and of canine contact

Seligman/Pullinger

Pages: 266-275
PMID: 8995926

Dental attrition randed according to a validated sererity scale was correlated with age as a proxy for functional wear in 148 asymptomatic subjects. Anterior, posterior, mediotrusive, laterotrusive, and total attrition severity was analyzed. The geometric contribution of canine attrition to the variance of posterior attrition was also tested through correlations, and the time span required to record a statistically significant difference in attrition using the scale was determined. Age explained 12.6% of the differences in the total attrition scores (p<.001, Spearman’s rho), 6.4% of the anterior scores (P<.01), and 20.9% of the laterotrusive scores (P<.001), 6% to 36% of the mediotrusive attrition (P<.05 to P<.01), and 20% to 29% of the laterotrusive attrition (P<.05 to P<.001). At least 20 to 30 years was necessary to show significant clinical differences, except that laterotrusive attrition changes could be discriminated in only 10 years for the 20- to 29-year-old group. Notable attrition was already evident in the 20-to 29-year-olds, and acelerated wear rates prior to age 20 years were not maintained in most areas of the dentition. A nonlinear progression with age was observed, thereby inhibiting prediction of subsequent attrition from prior levels. Attrition was concluded to have multifactorail etiology, with age and the geometry of canine guidance having a significant influence, in addition to commonly accepted parafunction.

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