- Attrition (dental)
Attrition is the loss of
tooth structure by mechanical forces from opposing teeth. Attrition initially affects the enamel and, if unchecked, may proceed to the underlyingdentin . Once past the enamel, attrition quickly destroys the softerdentin .The most common cause of attrition is
bruxism . Functional habits are those such as chewing and swallowing, which usually puts very little force on opposing teeth.Parafunctional habit s, such as clenching and clicking the teeth together nervously, place greater amounts of forces on opposing teeth and begin to wear the teeth. As expected, wear usually begins on the incisal or occlusal surfaces.Characteristic Features: Development of a facet (flat surface with circumscribed and well defined border). Opposing tooth facets will match perfectly in occlusion.
Interproximal Attrition: Occurs at proximal surfaces of adjacent teeth when they move against one another on occlusal loading. Movement of teeth is in the vertical direction.
ee also
*Abrasion
*Abfraction
*Erosion
*Bruxism References
Neville, B.W., D. Damm, C. Allen, J. Bouquot. "Oral & Maxillofacial Pathology". Second edition. 2002. Page 56. ISBN 0-7216-9003-3.
Wikimedia Foundation. 2010.