Salivary Dysfunction Lowers Prosthetic Satisfaction in Survivors
Post-radiotherapy salivary dysfunction strongly impacts patient satisfaction with removable dental prostheses among oral cancer survivors, Cureus reported.
Researchers evaluated 100 clinically disease-free oral cancer survivors who completed curative-intent radiotherapy and used removable complete or partial dental prostheses. The hospital-based cross-sectional observational study took place in the Department of Radiation Oncology at Pandit Bhagwat Dayal Sharma Post Graduate Institute of Medical Sciences, Rohtak, India, between May 2024 and June 2025.
Salivary Flow Correlates with Xerostomia Scores and Prosthetic Satisfaction
Participants in the cohort had a mean age of 59.1 years, with 61 males and 39 females. The mean unstimulated whole salivary flow rate measured 0.31 mL/min, and the mean Xerostomia Inventory score reached 29.7. Overall prosthetic satisfaction averaged 6.91 out of 10.
Statistical analysis showed that higher xerostomia scores correlated with lower salivary flow and lower overall prosthetic satisfaction. Conversely, higher salivary flow associated with greater satisfaction across all measured domains.
Impact Across Prosthetic Domains
All measures of patient satisfaction with prosthetics worsened as dry mouth symptoms increased. Patients with higher xerostomia reported lower scores in comfort, retention and stability, chewing ability, speech, and appearance.
Evaluating Salivary Function Helps Guide Individualized Prosthetic Planning
The study highlights the necessity of evaluating both subjective xerostomia and objective salivary function during post-treatment care. Routine assessments help identify patients who require individualized prosthetic planning and supportive management after oral cancer treatment.
Limitations noted in the study design include its cross-sectional nature, which prevents establishing causal relationships. The single-center setting and the exclusion of patients who discontinued denture use due to severe dryness may also influence the findings.
Common Patient Inquiries
How does radiation therapy affect removable dental prostheses?
Radiation therapy damages salivary gland tissues, leading to reduced saliva flow and chronic oral dryness. This lack of lubrication compromises denture retention, increases friction against the oral mucosa, and impairs chewing and speech.
What measurements were used to evaluate patients?
Researchers assessed subjective xerostomia using an 11-item Xerostomia Inventory questionnaire and measured objective salivary function through an unstimulated whole salivary flow rate. Prosthetic satisfaction was recorded using an 11-point numeric rating scale.
Does the duration of denture use improve satisfaction?
Statistical analysis found no significant correlation between the duration of prosthesis use and overall prosthetic satisfaction, indicating that time alone does not overcome the functional hurdles of persistent salivary dysfunction.