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

Figure 1

Woven glass preimpregnated fibers in industrialized glass fiber groups. (a) With self-polymerized resin (×60 magnification). Spaces between fibers and resin are due to failure of chemical and micromechanical interaction resulting in stress concentration regions with crack development (see arrows). (b) Micromechanical interlocking with heat-polymerized resin (×55 magnification). Note closer relationship between fibers and resin. (c) Presence of spaces between fiber and SP groups (×500 magnification). (d) Signals of spaces created after failure of micromechanical interlocking with HP (×1,000 magnification).

(a)

(b)

(c)

(d)