Related Experiment Video
Updated: Oct 10, 2025

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Pull-out bond strength of fiber post luted with two types of resin luting cements using different light curing units
M K AlMadi1, A Khabeer1, S AlHilal2
1Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
Aims:
The aim of this study was to evaluate the pull-out bond strength of fiber post when cemented with a self-adhesive dual-cured resin luting cement and a conventional light-cured resin luting cement. In addition, the influence of a light-emitting diode (LED) and halogen (QTH) curing lights on the pull-out bond strength was assessed.
Materials And Methods:
A total of 40 extracted human teeth were selected. Post-space preparation of 10 mm was done and two types of resin cement i.e. RelyX Unicem (RXU) and variolink esthetic LC (VLE) were used for cementation of a translucent RelyX fiber post. Light activation for 60 s was done with LED and QTH curing units. The pull-out test was performed parallel to the long axis of the tooth and the post at a crosshead speed of 1 mm/min using a universal testing machine. The load required to dislodge each post was recorded in Newton (N). Statistical analysis was done and a value of P < 0.05 was considered statistically significant.
Results:
The RXU showed a mean (SD) pull-out bond strength of 203.5N (47.1) and 207.3N (31.3) when light activated with LED and QTH curing lights, respectively. For VLE, the mean pull-out bond strength was 78.9N (21.5) and 87.7N (30.7), when light activated with LED and QTH curing lights, respectively. Moreover, LED and QTH curing lights did not influence the pull-out bond strength for both the test materials.
Conclusion:
It is concluded that a dual-cured resin luting cement should be used for the cementation of fiber post. Further research is required to understand the light transmission of translucent fiber posts.
More Related Videos
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...
Bonding and Strength of Aggregate
Accelerated Curing of Concrete
Fiber Reinforced Concrete
Types of Cement I
Type I (Ordinary Portland Cement) is widely used for general construction where special properties are not required. It has moderate sulfate resistance and heat of hydration.
Type II (Modified Cement) offers moderate resistance to sulfate attack and a lower rate of heat development compared to Type I. It is suitable for structures in...
Types of Cement II

