Influence of thickness and aging on the mechanical properties of provisional resin materials.

This study aimed to evaluate the flexural strength (FS) and modulus of elasticity (ME) of 2 provisional resins at different thicknesses and after different storage periods. A total of 80 specimens were made of 2 provisional restorative materials (n = 40): Dencôr (DC) or Protemp 4 (PT). The specimens in each material group were prepared in 2 different thicknesses (n = 20): 1.

Effect of different beverages and storage period on bis-acryl color stability using two assessment methods.

Objective: This study aimed to evaluate the color stability (ΔE ) of bis-acryl resins after different immersion solutions and storage time by different evaluation methods.

Materials And Methods: Sixty specimens (n = 30) were prepared from Protemp 4 and Structur 3. The specimens were divided into three groups (n = 10), according to the immersion solution (artificial saliva, cola beverage, and yerba mate tea) and evaluated at two storage times (7 and 14 days).