The Influence of Polymerization Type and Reinforcement Method on Flexural Strength of Acrylic Resin

Figure 2

Fiber rupture and metal dislodgement within acrylic resins. (a) Unidirectional glass fibers in self-polymerized resin showing partial fiber rupture (×21 magnification). (b) Intact steel wire with resin fracture and separation: metal smooth surfaces did not micromechanically interlock with heat-polymerized resin (×30 magnification). (c) Tensile side of specimen with steel wire and self-polymerized resin (×200 magnification). In spite of observed spaces, wire’s lateral surfaces showed close interaction with resin, providing greater reinforcement.

(a)

(b)

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