The Effect of Simulated Chewing on the Surface Roughness of Direct and Indirect Resin-Composites Opposed by Zirconia: An In Vitro Study

Table 2

The chewing simulator test parameters.

Parameters
Weight per specimen	5 kg
Vertical movement	2.5 mm
Horizontal movement	0.7 mm
Vertical speed	60 mm/s
Horizontal speed	40 mm/s
Number of cycles	250,000
Cycle frequency	1.6 Hz
Kinetic energy