Adhesion of biofilm, surface characteristics, and mechanical properties of antimicrobial denture base resin

• Published in: The journal of advanced prosthodontics Vol. 15; no. 2; pp. 80 - 92
• Main Authors: Teixeira, Ana Beatriz Vilela, Valente, Mariana Lima da Costa, Sessa, João Pedro Nunes, Gubitoso, Bruna, Schiavon, Marco Antonio, Dos Reis, Andréa Cândido
• Format: Journal Article
• Language: English
• Published: Korea (South) The Korean Academy of Prosthodontics 01.04.2023
• Subjects: Original; Antimicrobial; 3D print resin; Heat-cured resin; Silver nanoparticles
• ISSN: 2005-7806; 2005-7814
• DOI: 10.4047/jap.2023.15.2.80

This study incorporated the nanomaterial, nanostructured silver vanadate decorated with silver nanoparticles (AgVO ), into heat-cured resin (HT) at concentrations of 2.5%, 5%, and 10% and compared the adhesion of multispecies biofilms, surface characteristics, and mechanical properties with conventional heat-cured (HT 0%) and printed resins. AgVO was incorporated in mass into HT powder. A denture base resin was used to obtain printed samples. Adhesion of a multispecies biofilm of , , and was evaluated by colony-forming units per milliliter (CFU/mL) and metabolic activity. Wettability, roughness, and scanning electron microscopy (SEM) were used to assess the physical characteristics of the surface. The mechanical properties of flexural strength and elastic modulus were tested. HT 10%-AgVO showed efficacy against ; however, it favored CFU/mL ( < .05). The printed resin showed a higher metabolically active biofilm than HT 0% ( < .05). There was no difference in wettability or roughness between groups ( > .05). Irregularities on the printed resin surface and pores in HT 5%-AgVO were observed by SEM. HT 0% showed the highest flexural strength, and the resins incorporated with AgVO had the highest elastic modulus ( < .05). The incorporation of 10% AgVO into heat-cured resin provided antimicrobial activity against in a multispecies biofilm did not affect the roughness or wettability but reduced flexural strength and increased elastic modulus. Printed resin showed higher irregularity, an active biofilm, and lower flexural strength and elastic modulus than heat-cured resin.