title: Proximal attrition facets: morphometric, demographic, and aging characteristics.
abstract: Although interproximal attrition is considered to be limited in modern populations, it has important clinical implications. However, in contrast to occlusal attrition, proximal attrition receives limited scientific attention. The main purpose of the current study was to fill this void. Seven-hundred and sixty-five teeth were collected from 255 skulls of subjects 18-75 yr of age. For each individual, three mandibular teeth (the first and second premolars and the first molar) were examined for proximal attrition facets (PAFs). The results provide detailed information on the size, shape, and location of the facets according to age cohort, gender, and ethnicity. The validity of the method used to measure the facets was also examined. The major findings were as follows: PAFs are usually located on the upper half of the crown proximal aspect; in each tooth, the mesial facet is more lingually positioned and the distal facet is more buccally positioned; the majority of the facets are subrectangular in shape; the size of the facets tends to increase in an anteroposterior direction (from premolars to molars); and facet size and location are age- and sex-dependent and ethnicity-independent. It is our recommendation that dentists bear in mind that interproximal attrition is a dynamic, long-term process and needs to be considered in many clinical scenarios.
authors.affiliation: Department 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.
authors.forename: Rachel
authors.initials: R
authors.lastname: Sarig
authors.forename: Israel
authors.initials: I
authors.lastname: Hershkovitz
authors.forename: Nir
authors.initials: N
authors.lastname: Shvalb
authors.forename: Tatiana
authors.initials: T
authors.lastname: Sella-Tunis
authors.forename: Hila
authors.initials: H
authors.lastname: May
authors.forename: Alexander D
authors.initials: AD
authors.lastname: Vardimon
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000367:Age Factors; D000368:Aged; D001641:Bicuspid / Q000473:pathology*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008963:Molar / Q000473:pathology*; D009811:Odontometry / Q000379:methods; D023861:Photography, Dental / Q000379:methods; D012737:Sex Factors; D019217:Tooth Attrition / Q000473:pathology*; D019228:Tooth Crown / Q000473:pathology; D044465:White People; D055815:Young Adult
keywords: attrition facet; dental wear; occlusal attrition