title: [Principal reasons for extraction of permanent tooth in a sample of Mexicans adults].
abstract: BACKGROUND
  Tooth extractions are one of the most common procedures in oral surgery. The objective of this study was to identify the reasons for tooth extraction in adult patients seeking care at teaching dental clinics.
  
  
  METHODS
  A cross-sectional study was carried out in 331 subjects between 18 and 85 (45.37 +/- 13.85) years of age seeking dental care in dental clinics of the Universidad Autónoma del Estado de Hidalgo, from January 2009 to December, 2009. Data pertaining to age, sex, tooth number and the reason for extraction according to Kay & Blinkhorn were analyzed with non-parametric tests.
  
  
  RESULTS
  779 extractions were undertaken. The main reason for extraction was dental caries (43.1%), periodontal disease (PD) (27.9%), and prosthetic reasons (21.5%). There was no significant difference across sex for reasons of extraction (p > 0.05). Significant differences (p < 0.001) were found for age (extraction due to periodontal disease increased with age); in patients attending in a single visit vs. patients attending a series of dental appointments (caries reasons were more common in patients having a single appointment vs. PD in those attending a series of appointments); for type of teeth (upper, posterior, and molars were extracted primarily because of caries, while lower, anterior and incisors were more often extracted because of PD).
  
  
  CONCLUSIONS
  Dental caries was the most common reason for tooth extraction, followed by periodontal disease. Differences in the reasons for extraction were observed across patient characteristics and type of tooth.
authors.affiliation: Area Académica de Odontología, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo. cemedinas@yahoo.com
authors.forename: Carlo Eduardo
authors.initials: CE
authors.lastname: Medina-Solís
authors.forename: América Patricia
authors.initials: AP
authors.lastname: Pontigo-Loyola
authors.forename: Eduardo
authors.initials: E
authors.lastname: Pérez-Campos
authors.forename: Pedro
authors.initials: P
authors.lastname: Hernández-Cruz
authors.forename: Ruben
authors.initials: R
authors.lastname: De la Rosa-Santillana
authors.forename: José de Jesús
authors.initials: Jde J
authors.lastname: Navarete-Hernández
authors.forename: Gerardo
authors.initials: G
authors.lastname: Maupomé
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D019229:Dentition, Permanent; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico; D008875:Middle Aged; D014081:Tooth Extraction / Q000706:statistics & numerical data*; D055815:Young Adult