Water absorption and solubility of provisional crown and bridge : the effect of the inclusion of polyethylene fibers

الملخص EN

Objective: This study was designed to investigate the effect of the inclusion of chopped lengths of ultra-high-modulus polyethylene fibers on the water absorption and solubility of two commercially available provisional crown and bridge materials, Protemp (Bis acrylic composite) and Trim (Polyvinylethylmethacrylate). Methods: Twenty specimens were made of each material, 10 without any fiber loading served as a control, and 10 with 4% by weight fiber loading were used.

The water absorption was measured after 7-day storage in de-ionized water at 37±1 °C. Results: In the water absorption test, Trim exhibited significantly more water absorption than Protemp.

The inclusion of fibers increased the water absorption of Protemp but had no effect on Trim.

However, it decreased the water solubility of Trim. Conclusion: Incorporation of ultra-high-modulus polyethylene fibers produced a statistically significant increase in the water absorption of Protemp and a statistically significant decrease in the water solubility of Trim.

Water absorption of Trim was unaffected by the inclusion of fibers