title: Rate and pattern of interproximal dental attrition.
abstract: Although occlusal and interproximal attrition occur because of diverse etiology and present dissimilar features, both progress with age. The objectives of this study were to reveal the rate and pattern of development of interproximal attrition facets (PAF) with age and to compare those with occlusal attrition (OA) changes. Five-hundred and ninety-four teeth were collected from 198 skulls (of adults, 20-71 yr of age). Three mandibular teeth [first premolar (P1), second premolar (P2), and first molar (M1)] were examined for PAF size and OA rate. Interproximal attrition and OA followed similar patterns of development until subjects reached 40-45 yr of age, after which they took different paths: PAF did not increase in size and were not as large as in younger groups, regardless of facet location, whereas OA continued to progress. The PAF changes with age differed between premolars and molars, unlike OA, which presented a similar rate for all teeth studied. Although OA scores presented significantly moderate correlations with age, PAF area size demonstrated low correlations with age. Low, but significant, correlations were found between the rate of OA and that of PAF. However, PAF and OA exhibited different patterns of development with age. Premolars and molars presented dissimilar development of PAF, which is probably caused by a unique attrition pattern in the molar teeth, different morphology, and force vectors.
authors.affiliation: Department of Orthodontics, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.|Dan David Center for Human Evolution and Biohistory, The Steinhardt Museum of Natural History and National Research Center, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Rachel
authors.initials: R
authors.lastname: Sarig
authors.affiliation: Dan David Center for Human Evolution and Biohistory, The Steinhardt Museum of Natural History and National Research Center, Tel Aviv University, Tel Aviv, Israel.|Department of Anatomy and Anthropology, The Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel.
authors.forename: Israel
authors.initials: I
authors.lastname: Hershkovitz
authors.affiliation: Department of Orthodontics, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Nir
authors.initials: N
authors.lastname: Shpack
authors.affiliation: Dan David Center for Human Evolution and Biohistory, The Steinhardt Museum of Natural History and National Research Center, Tel Aviv University, Tel Aviv, Israel.|Department of Anatomy and Anthropology, The Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel.
authors.forename: Hila
authors.initials: H
authors.lastname: May
authors.affiliation: Department of Orthodontics, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Alexander D
authors.initials: AD
authors.lastname: Vardimon
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001641:Bicuspid / Q000473:pathology*; D003743:Dental Enamel / Q000473:pathology; D003804:Dentin / Q000473:pathology; D018450:Disease Progression; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008875:Middle Aged; D008963:Molar / Q000473:pathology*; D010781:Photography / Q000379:methods; D016628:Replica Techniques; D019217:Tooth Attrition / Q000473:pathology / Q000503:physiopathology*; D019228:Tooth Crown / Q000473:pathology; D055815:Young Adult
keywords: age; dental attrition; interproximal attrition; wear facet