Related Experiment Video
Updated: Sep 20, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Flexural fatigue strength of CAD/CAM composite material and dual-cured resin luting cements
Keiichi Yoshida1, John R Condon, Mitsuru Atsuta
1Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, 1-7-1, Sakamoto, Nagasaki 852-8588, Japan. keiichi@net.nagasaki-u.ac.jp
Purpose:
To evaluate the flexural strength and flexural fatigue strength of a CAD/CAM composite and three resin luting cements.
Materials And Methods:
Specimens of CAD/CAM composite (2 x 2 x 25 mm) were fabricated from a composite block (GN-I) using a low-speed cutting saw. Similar specimens of three dual-cured resin luting cements, Linkmax HV, Panavia Fluoro Cement, and RelyX ARC were polymerized in a laboratory-photo-curing unit (Triad II). Flexural strengths were measured at a cross-head speed of 1 mm/minute in 4-point bending (span = 20 mm; distance between inside loading points = 10 mm). The cyclic fatigue test was performed at 1.0 Hz on a fatigue tester. The staircase method was employed using a 10,000 cyclic load limitation, 5 MPa stress increment, and 20 specimens for each material. The initial test was performed at approximately 50% of the mean flexural strength.
Results:
The flexural fatigue strength results followed the same relationship as those of the static flexural strength, and all mean values were statistically different between the four materials. The ratio of the fatigue strength to the flexural strength ranged from 0.5-0.7, with the dual-cured resin luting cements being lowest.
More Related Videos
04:23Standardized Protocol to Evaluate the Effect of Surface Treatments, Luting Cements, and Thermocycling on PEEK–Composite Bond Strength
Published on: June 9, 2026
09:41Magnet Assisted Composite Manufacturing: A Flexible New Technique for Achieving High Consolidation Pressure in Vacuum Bag/Lay-Up Processes
Published on: May 17, 2018
Related Concept Videos
Strength of Cement
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in ASTM C...
Fatigue
Fatigue Strength of Concrete
Bending of Members Made of Several Materials
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Fiber Reinforced Concrete
Stresses under Combined Loadings
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...