Pmma Denture Base Composites Reinforced by Nitrile Rubber and Ceramic Fillers
Source abstract
Abstract
Poly(methyl methacrylate) (PMMA) denture base composites were fabricated by incorporating nitrile butadiene rubber (NBR) particles and ceramic fillers (Al 2 O 3 , YSZ, and SiO 2 ). PMMA powder was mixed with liquid methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EGDMA) as crosslinking agents. The different types of ceramic fillers were fixed at 5 wt.% and NBR particles in proportions of 5, 7.5 and 10 wt.%, respectively, mixed with PMMA. The impact strength (IS) increased and the fracture toughness (K IC ) decreased with the increase of NBR content in PMMA matrix. The composites with Al 2 O 3 showed better IS and K IC when compared to YSZ and SiO 2 particles. It has been demonstrated that the combination of 10 wt.% NBR/5 wt.% Al 2 O 3 produced the optimum density (1.049 g/cm 3 ), IS (7.41 KJ/m 2 ), K IC (2.45 MPa.m 1/2 ) and statistically the values was significantly increased (p < 0.05).
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Dental materials and restorations · Orthopaedic implants and arthroplasty · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Structural Materials Niche Area, School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
The Faculty of Medical Technology of Msellata, Almorgab University, Libya
Cluster of Polymer Composites, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
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