Abstract
Composite films having the UV cured Bis-GMA (Bisphenol A glycidylmethacrylate)/TEGDMA (triethylene glycol dimethacrylate) as a matrix and the ferrous oxide doped alumina (Al2O3 Fe) based particles were prepared and subjected to cavitation. In order to improve the mechanical and adhesion properties of composites, four different surface modifications of filler particles were performed: 3-methacryloxypropyltrimethoxysilane (MEMO), vinyl-tris(2-methoxyethoxy)silane (VTMOEO), (3-aminopropyl)trimethoxysilane (APTMS) and biodiesel (BD). Composite films were made with 0.5, 1.5, and 3 wt.% of ferrous oxide doped alumina particles with each of the mentioned surface modifications. Composite films were prepared on brass substrates and exposed to cavitation erosion. The erosion was monitored using the mass loss while image analysis was used to observe surface defects. The composite film reinforced with Al2O3 Fe having VTMOEO as a surface modifier was the most resistant one in terms of mass loss, as well as the level of surface destruction. Results were compared to the same polymer matrix film and composite films prepared with fillers without surface modifications revealing that all composites with surface modified fillers exhibited some improvement in resistance to cavitation.
Highlights
Composite materials have been used in a variety of fields such as surface protection layers, in parts requiring demanding properties, and as dental restoration materials
Results were compared to the same polymer matrix film and composite films prepared with fillers without surface modifications revealing that all composites with surface modified fillers exhibited some improvement in resistance to cavitation
The ferrous oxide doped alumina based particles having different surface modifications (MEMO, VTMOEO, APTMS and BD) were used as reinforcement in the matrix based on BisGMA/TEGDMA composites
Summary
Composite materials have been used in a variety of fields such as surface protection layers, in parts requiring demanding properties, and as dental restoration materials. Dental resin composites based on BisGMA (2,2-bis[4-(2-hydroxy-3-methacrylyloxypropoxy)phenyl] propane) are commonly used in dental restorations due the possibility of different forms in order to fill the cavity while the polymerization can be achieved by light in a rapid and controlled manner [2]. Dental composites are typically composed of four major components: organic polymer matrix (BisGMA, TEGDMA, urethane dimethacrylate (UDMA), etc.), inorganic filler particles (up to about 70 % mass fraction), coupling agents, and the initiator–accelerator system [4]. The role of fillers is to enhance the mechanical properties, and to limit the shrinkage of the composite during light curing
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
