title: Validation of the oral health impact profile (OHIP-20sp)  for Spanish edentulous patients.
abstract: OBJECTIVE
  The purposes of this study are to validate the indicator of Oral Health Impact Profile for edentulous patients (OHIP-20sp) in the Spanish population and to analyze the factorial construct of the prosthetic well-being.
  
  
  METHODS
  [corrected] A total of twenty-one (n=21) edentulous patients wearing mandibular implant-overdentures on Locator® (LO) and twenty (n=20) with complete dentures (CD) were retrospectively evaluated in this study. All participants were recruited consecutively and were treated in the previous academic year 2009-2010 by professors of the University of Salamanca. Reliability analyses and validity tests were performed in order to evaluate the psychometric properties of OHIP-20sp employing two different total score methods (additional and simple count). A retrospective evaluation of the impact of the prosthetic treatment was captured with an evaluative instrument derived from OHIP-20, and named POST-OHIP-13.
  
  
  RESULTS
  The reliability coefficient (Cronbach's alpha = 0.91) has shown a high internal consistency. Item-total correlations coefficients ranged from 0.46 and 0.81. Five factors, named as disability, functional comfort, psychosocial impact, pain-discomfort and functional limitations were identified as principal components of the construct, explaining almost 85% of the variance. The 48% of the sample felt at least one impact in an occasional or more frequently manner (generally food packing). The global transition judgment of the prosthetic treatment using the POST-OHIP-13 was significantly higher in group LO than in the CD group.
  
  
  CONCLUSIONS
  OHIP-20 seems to be a reliable and valid indicator to measure oral impact and satisfaction in the Spanish edentulous population. The underlying construct is comprised by 5 factors named as disability, functional comfort, psychosocial impact, pain-discomfort and functional limitations.
authors.affiliation: Department of Surgery, Faculty of Medicine, University of Salamanca, Spain. javimont@usal.es
authors.forename: Javier
authors.initials: J
authors.lastname: Montero
authors.forename: Carla
authors.initials: C
authors.lastname: Macedo
authors.forename: Antonio
authors.initials: A
authors.lastname: López-Valverde
authors.forename: Manuel
authors.initials: M
authors.lastname: Bravo
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D009066:Mouth, Edentulous; D009909:Oral Health; D012189:Retrospective Studies; D018434:Sickness Impact Profile; D013030:Spain