Minimal important difference of the psychosocial impact of dental aesthetics questionnaire following orthodontic treatment: A cohort study
Document Type
Article
Publication Date
4-1-2022
Abstract
(1) This study aimed to do a longitudinal validation of the psychosocial impact of dental aesthetics questionnaire (PIDAQ) and determine its minimal important difference (MID) following orthodontic treatment; (2) 42 adolescents (11 to 18 years old) were recruited for treatment with fixed appliances and the participants answered the Malaysian PIDAQ prior to treatment (T0), mid-treatment (T1), and post-treatment (T2), plus a global health transition scale at T1 and T2. Data analyses included repeated measures ANOVA and paired sample t-tests. Test-retest was administered 2 to 6 weeks from T0; (3) The final sample comprised 37 subjects (response rate = 88.1%). The 95% limits of agreement were -10.3 to 8.5 points. In the anchor-based approach, those who experienced the smallest changes by reporting their dental aesthetics as ``a little improved'' had an insignificant PIDAQ score change of -5.3 at T1. At T2, the PIDAQ scores of those in this category were reduced significantly (mean change = -26.2; effect size (ES) = 1.0; p = 0.34). In the distribution-based approach, standardized PIDAQ scores were significantly reduced, with medium (0.7) to large (1.5) ES at T1 and T2, respectively; (4) The PIDAQ can detect orthodontic-related changes in patients' psychosocial well-being. The post-treatment MID is 26 scale points with large ES.
Keywords
Orthodontic appliances, Fixed, Index of orthodontic treatment need, Minimal clinical important difference, Validation study
Divisions
Dentistry
Funders
Ministry of Education, Malaysia (FRGS FP033-2015A),Ministry of Education, Malaysia (FRGS/1/2015/SKK14/UM/02/2)
Publication Title
Children-Basel
Volume
9
Issue
4
Publisher
MDPI
Publisher Location
ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND