Impact of the Physiological Parameters of the Oral Cavity on the Mechanical Properties of Zinc-stabilized and Zinc-free Adhesive Creams: A Comparative In Vitro Study.

• DOI: 10.3290/j.jad.c_1871
• Publication Date: 2025-03-10
• Authors: Josephine Reymann; Anantha Narayanan...; Christopher Ludtka; Jeremias Hey; Andreas Kiesow; Stefan Schwan

The current trend in denture adhesives is shifting toward zinc-free formulations due to the significant health concerns associated with zinc. Studies have focused on retention of these adhesives; however, there a dearth literature regarding their damping performance. This study analyzes impact oral cavity physiological parameters: temperature, pH, and swelling ratio mechanical properties zinc-stabilized examines role zinc plays influencing adhesive behavior. investigates how underlying cream change for adhesives. relative its variation from exposure conditions can significantly assist design dentures reduce discomfort experienced by wearers. was investigated loss modulus values, which were evaluated using rheological frequency sweep tests. tests performed maintaining at specified values ratio, over range 0.01 Hz 10 Hz, included average frequencies human chewing / bite forces reported existing literature. Zinc-stabilized showed larger fluctuation compared formulation respect ratios. higher behavior below 0.7 whereas above loading 0.7-1 Hz. Both varying either side force spectrum terms applied bite. or cushioning effect provided pain dental practitioners better supporting