Impact of various screwed implant prostheses on oral health-related quality of life as measured with the QoLIP-10 and OHIP-14 scales: a cross-sectional study

Abstract

Objectives: This study aimed to validate the Quality of Life with Implant-Prostheses (QoLIP-10) questionnaire for assessing the impact of screwed implant-supported rehabilitations on oral health-related quality of life (OHRQoL).

Methods: 131 patients wearing screw-retained implant restorations were assigned to the following groups: Group 1 (HP; n=50): fixed-detachable hybrid prostheses (control), Group 2 (S-PD; n=43): metal-ceramic screwed partial dentures, and Group 3 (S-CD; n=38): metal-ceramic screwed complete dentures. Impacts on OHRQoL were evaluated using the QoLIP-10 and Oral Health Impact Profile (OHIP-14sp) scales. Data on global oral satisfaction, socio-demographics, health-behaviours, and prosthetics were gathered. Reliability and validity of the QoLIP-10 were investigated for screwed prosthesis wearers. The Spearman's rank test was applied to determine the correlation between both indices. Descriptive and non-parametric probes were run to evaluate the influence of the study variables on OHRQoL.

Results: The QoLIP-10 confirmed its psychometric capacity for screwed prosthesis wearers. Both tests were inversely correlated. HP wearers reported the worst dental-facial aesthetics, performance, and functional limitation outcomes. Gender, education level, complaints about the mouth, perception of treatment needs, and prosthetic status modulated the OHRQoL.

Conclusions: Screwed implants restorations provide better OHRQoL than do fixed-detachable hybrid prostheses.

Keywords: Fixed-detachable hybrid prosthesis; Oral Health Impact Profile (OHIP); Oral health-related quality of life (OHRQoL); Patient satisfaction; Quality of Life with Implant-Prostheses (QoLIP–10); Screwed implant-supported denture.