Aging
Artificial saliva
Degree of conversion
Flexural strength
Temporary crown material.
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Objective: Evaluate the effects of different storage periods on flexural strength (FS) and degree of conversion (DC)
of Bis-Acryl composite and Urethane dimethacrylate provisional restorative materials. Material and Methods: A
total of 60 specimens were prepared from four temporary crown materials commercially available and assigned
to four tested groups (n = 15 for each group): Prevision Temp, B&E CROWN, Primma Art, and Charm Temp
groups. The specimens were stored in artificial saliva, and the FS was tested after 24 h, 7 d, and 14 d. A standard
three-point bending test was conducted using a universal testing machine. Additionally, the DC was determined
using a Fourier transform infrared spectroscopy (FTIR) device. The data were analyzed st
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