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As presented by Gabriel Furtos and colleagues on page 1266, the cover shows a scanning electron microscopy image of a fractured sample of resin cement reinforced with 20% short alkaline-resistant glass fibers after a diametral tensile strength test. In the image, the fibers are orientated in various directions. The fractured surface of the composite shows the fibers remaining after material fracturing; small patches of polymer composite adhered to the glass fiber surface after pulling out may also be observed. The fractured surface of the fiber composite is intact, without cracks in the polymer matrix.