Impact of Denture Cleansers on the Flexural Properties of Auto-Polymerizing PMMA Resins: A Comparative In Vitro Analysis

Authors : Mahmut Sertaç Özdoğan, Ramazan Karslıoğlu

Pages : 180-189

Doi:10.35414/akufemubid.1640783

View : 25 | Download : 141

Publication Date : 2026-01-19

Article Type : Research Paper

Abstract :The purpose of this study was to assess whether three commercial denture cleaners affected the auto-polymerized polymethyl methacrylate (PMMA) resins\\\' flexural strength and elastic modulus during different immersion times. Bar-shaped specimens (2x2x25 mm) were fabricated from auto-polymerized PMMA and subjected to three-point bending tests to assess their flexural properties. The specimens were immersed in three denture cleansers (Aktident, Corega, and Protefiks) for durations of 3 minutes, 15 minutes, and 8 hours, following the manufacturers\\\' guidelines. Flexural strength and elastic modulus were measured using a universal testing machine per ISO 20795-1:2013 standards. Statistical analysis was performed using SPSS software, with significance set at α = 0.05. Immersion significantly impacted the flexural properties of PMMA. Short-term immersion (3 to 15 minutes) in Corega resulted in minimal changes, maintaining flexural strength and modulus of elasticity above ISO standards. On the other hand, all groups experienced a considerable decrease in mechanical characteristics after an 8-hour soak, especially when using Protefiks and Aktident cleansers. Commercial denture cleansers affect the mechanical properties of resins, with the extent of impact influenced by cleanser composition and immersion duration. Corega demonstrated superior performance in preserving material properties, emphasizing the importance of selecting appropriate cleaning agents for dental prosthetics.
Keywords : PMMA, Eğilme Dayanıklılığı, Protez Temizleyici, Elastiklik Modülü, Dezenfeksiyon

ORIGINAL ARTICLE URL