Comparative Analysis of Adhesive Retention and Denture Weight in Different Residual Ridge Morphologies: A Cross-Over Randomized-Controlled Trial

Aim: The aim of this study was to compare the retentive strengths of various forms of denture adhesives (paste, powder, and strips) on different types of mandibular residual alveolar ridges, considering their respective denture weights. Materials and Methods: In this crossover randomized-controlled trial, the patients were randomly and equally divided into 3 groups based on clinical features and radiographic findings according to the Wical–Swoope classification. Three forms of denture adhesives were used, including powder, cream, and strips, for three residual ridge types. Quantification of retention without adhesive was carried out as a control. The retentive strength of adhesives was compared in each ridge pattern and correlated with the denture weight. The study was registered at https://clinicaltrials.gov (identifier number: NCT05063422). Results: The mean retentive strengths of dentures without adhesive (control) were relatively low across all ridge classifications, ranging from 0.27 to 0.69 lb. In contrast, the experimental groups utilizing Fittydent and Polygrip adhesive products showed significantly improved retentive strengths, with Fittydent cream and Polygrip cream showed the highest enhancement, ranging from 1.01 to 2.57 lb across different ridge types. Furthermore, significant mean differences were observed between ridge classes and the retentive strength of each adhesive product. Conclusion: The study highlights the crucial role of tailored denture adhesive selection in optimizing retention for denture wearers. Polygrip cream demonstrated superior effectiveness across various ridge classifications compared to Fittydent cream, powder, and strips. These findings emphasize the importance of personalized treatment approaches based on ridge types and denture weight.