فهرست نشریات علمی دسترسی آزاد ایران

The goal of the research was to find out the consequences on the shear bond strength of acrylic denture teeth by adding different PMMA/ZnO% (2%, 4% and 6%) reinforcing Nanofillers. Four groups were created from the 40 acrylic resin (PMMA) specimens.10 samples for each groups separated into the following: Group 1 was the control group, Group 2 contains 2% by weight of ZnO, Group 3 contains 4% by weight of ZnO and Group 4 contains 6% by weight of ZnO. The wax pattern sample had dimensions of 20 mm in length, 5 mm in diameter, the base of the cylinder specimen was 5 mm in thickness (the height) and 8 mm in diameter. These measurements were used to make acrylic cylinder forms. We analyzed the shear bond strengths of all samples. Presented in PMMA+ZnO 4% showed the maximum mean value of upper bound of shear bond strength which was equaled to (14.379), while in the PMMA+ZnO 6% recorded the minimum value of lower bound of shear bond strength (7.617). When their significant differences between the control group PMMA and the (PMMA+ZnO 4%), while when compared the control group PMMA and the (PMMA+ZnO 2%, 6%) there were non-significant differences.