title: [Investigations on the incidence of dental wedge-shaped defects and abrasion in 501 elderly population and their correlation].
abstract: OBJECTIVE
  To investigate the incidence of the wedge-shaped defects and abrasion their correlation in elderly.
  
  
  METHODS
  501 elderly were examined.
  
  
  RESULTS
  The prevalence of wedge-shaped defects was 89.62% and the abrasion was 100.00%. Both the occurrence rate and abrasive degree were all significantly related with the age and the location of tooth. Patients with severe abrasion had severe wadge-shaped defects.
  
  
  CONCLUSIONS
  The wedge-shaped defects and abrasion are common dental diseases in elderly. There would be some common factors in causing both lesions, but the factors that promote the abrasive degree are different.
authors.affiliation: Department of Stomatology, Provincial Free Medical Clinics of Jiangxi, Nanchang 330046.
authors.forename: P
authors.initials: P
authors.lastname: Li
authors.forename: J
authors.initials: J
authors.lastname: Li
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
mesh_terms: D000368:Aged; D002681:China / Q000453:epidemiology; D003807:Dentin Sensitivity / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D008875:Middle Aged; D008963:Molar; D014072:Tooth Abrasion / Q000453:epidemiology*