Effect of 940-nm Diode Laser Power on the Bond Strength of Fiber Posts to Root Canal Dentin
Year: 2026
Type: article
Abstract: The retention of fiber posts is reliant upon the successful adhesion of resin cement to root canal dentin. Laser-assisted treatment may modify the dentin surface and influence post bond strength; however, the impact of various power settings of a 940-nm diode laser requires further investigation. The objective of this study was to assess the effectiveness of different 940-nm diode laser powers on fiber post retention. Thirty extracted premolars have been sorted into three groups (n = 10): 1.2-W laser, 2-W laser, and control. Fiber posts have been retained using dual-cure resin cement and pull-out force was recorded using a universal testing machine. Data were analyzed using non-parametric tests. Significant differences were found between all groups (p < 0.001). Median pull-out forces were 93 N, 79 N, and 72 N for the 1.2-W, 2-W, and control groups, respectively. All pairwise comparisons were significant (p < 0.001). Both laser-treated groups showed higher median post retention than the control, with the 1.2-W group showing the highest median value.
Source: Dentistry 3000
Institution: Al-Hadi University College
Language: English
Subfield: General Dentistry
Field: Dentistry
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W7225625774
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