Validation of the Turkish Oral Health Impact Profile-17 for Assessing Oral Health-Related Quality of Life in Endodontic Patients.

OBJECTIVE: To evaluate the reliability and construct validity of the Turkish version of the Oral Health Impact Profile-17 (OHIP-17-TR) in patients receiving endodontic treatment. MATERIALS AND METHODS: This methodological, cross-sectional validation study included 229 adult patients undergoing or having recently completed endodontic treatment. Participants completed the OHIP-17-TR questionnaire. Internal consistency was assessed using Cronbach alpha and corrected item-total correlations. Construct validity was evaluated through exploratory factor analysis (EFA). Sampling adequacy was examined using the Kaiser-Meyer-Olkin (KMO) measure and Bartlett test of sphericity. Test-retest reliability was not assessed. RESULTS: The OHIP-17-TR showed high internal consistency, with a Cronbach alpha of 0.894. Corrected item-total correlations ranged from 0.345 to 0.675. The KMO value was 0.882, and the Bartlett test was significant (P 0.001), indicating suitability for factor analysis. Exploratory factor analysis identified a four-factor structure explaining 51.8% of the total variance, with all items demonstrating salient factor loadings. Subscale Cronbach alpha values ranged from 0.689 to 0.862. CONCLUSIONS: The OHIP-17-TR demonstrated good reliability and acceptable construct validity in this sample of endodontic patients. These findings support the use of OHIP-17-TR as a brief and practical patient-reported outcome measure for assessing oral health-related quality of life in endodontic research and clinical practice.