Assessment of Oral Health-Related Quality of Life (OHRQoL) and Factors Influencing Oral Hygiene Habits in Complete Denture Patients

Objectives: This study aimed to investigate the sociodemographic factors influencing oral hygiene habits and oral health-related quality of life (OHRQoL) among complete denture wearers at Kuwait University Dental Clinic (KUDC). Methods: A cross-sectional observational study was conducted using a self-administered questionnaire and an Oral Health Impact Profile-19 (OHIP-19) instrument to assess oral hygiene habits and OHRQoL in 61 complete denture patients, treated by dental undergraduate students at KUDC, between January 2019 and December 2023. Additionally, a clinical assessment of denture hygiene was performed using the Budtz-Jörgensen denture plaque index for all patients (n = 61). Sociodemographic, general health status, oral hygiene habits, and OHRQoL-related data were collected. Results: A total of 37.7% of included participants were aged 51–60 years, with 75.4% being male. Most participants (81.96%) had a high school education or less. Caries was reported as the primary cause of tooth loss (83.6%), and 77.04% recorded irregular dental visits. Only 46.05% of participants demonstrated optimal and/or good denture hygiene. Toothpaste was the most common cleaning method (79.21%), and 70.62% removed their dentures at night. A significant association was found between education level and denture wearing (p = 0.035), as well as between gender and the frequency of dental visits (p = 0.024). However, no significant relationship was observed between gender and denture hygiene (p = 0.52). The OHIP-19 results revealed that poor denture hygiene impacted OHRQoL across multiple domains, including functional limitation, physical pain, psychological discomfort, and social disability. Conclusions: Unsatisfactory denture hygiene was prevalent among participants, possibly due to limited awareness or inadequate instructions provided by dental health practitioners. Education level and gender influenced certain aspects of denture care, highlighting the need for targeted oral health education programs and improved patient guidance from dental practitioners. Additionally, poor denture hygiene was associated with reduced OHRQoL, emphasizing the importance of addressing both oral hygiene practices and their psychosocial impacts to improve overall well-being.