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Proximal attrition facets: morphometric, demographic, and aging characteristics.

Rachel Sarig1, Israel Hershkovitz, Nir Shvalb

  • 1Department of Orthodontics, Faculty of Medicine, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Anatomy and Anthropology, Faculty of Medicine, The Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.

European Journal of Oral Sciences
|June 17, 2014
PubMed
Summary

Proximal attrition facets (PAFs) are common and influenced by age and sex, though not ethnicity. Dentists should consider this long-term process in clinical practice.

Keywords:
attrition facetdental wearocclusal attrition

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Area of Science:

  • Dental Anthropology
  • Forensic Odontology
  • Restorative Dentistry

Background:

  • Interproximal attrition, unlike occlusal attrition, is understudied despite clinical relevance.
  • Limited scientific attention has been given to proximal attrition in contemporary populations.

Purpose of the Study:

  • To investigate the characteristics of proximal attrition facets (PAFs).
  • To analyze PAFs based on age, gender, and ethnicity.
  • To validate the measurement methodology for PAFs.

Main Methods:

  • Examination of 765 teeth from 255 adult skulls (ages 18-75).
  • Focus on three mandibular teeth per individual: first and second premolars and first molar.
  • Analysis of facet size, shape, and location, stratified by demographic factors.

Main Results:

  • PAFs predominantly found on the upper half of proximal tooth surfaces.
  • Mesial facets are more lingual; distal facets are more buccal.
  • Facet size increases anteroposteriorly (premolars to molars); size and location are age- and sex-dependent but ethnicity-independent.

Conclusions:

  • Proximal attrition is a dynamic, long-term process requiring clinical consideration.
  • Demographic factors like age and sex significantly influence PAF characteristics.
  • Findings provide a foundation for understanding interproximal wear in dental contexts.