Fracture resistance of CAD/CAM blocks cemented on dentin using different cementation strategies
Issued Date
2023-01-01
Resource Type
ISSN
18831958
Scopus ID
2-s2.0-85166191405
Journal Title
Journal of Prosthodontic Research
Volume
67
Issue
4
Start Page
603
End Page
609
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Prosthodontic Research Vol.67 No.4 (2023) , 603-609
Suggested Citation
Anuntasainont M., Po-Ngam N., Lührs A.K., Neoh S.P., Pongprueksa P. Fracture resistance of CAD/CAM blocks cemented on dentin using different cementation strategies. Journal of Prosthodontic Research Vol.67 No.4 (2023) , 603-609. 609. doi:10.2186/jpr.JPR_D_22_00196 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/90822
Title
Fracture resistance of CAD/CAM blocks cemented on dentin using different cementation strategies
Author's Affiliation
Other Contributor(s)
Abstract
Purpose: To determine whether the fracture resistance of computer-aided design/computer-aided manufacturing (CAD/ CAM) resin-based composites and polymer-infiltrated ceramic network materials cemented on dentin is influenced by the restoration thickness and composite cement application strategy. Methods: Disc-shaped specimens (Ø = 7 mm) of 0.8 mm and 1.5 mm thicknesses were milled from two CAD/CAM materials: resin-based composite (RBC, Cerasmart 270) and polymer-infiltrated ceramic network (PICN, Vita Enamic). The discs (n = 8 per group) were cemented on flattened dentin using three different cementation strategies: 1) self-adhesive composite cement (RelyX U200) in light-curing mode (LC-SAC), 2) universal adhesive (Single Bond Universal) with composite cement (RelyX Ultimate) in auto-curing mode (AC cement), and 3) adhesive and composite cement as in 2) but in light-curing mode (LC cement). The restorative surface was indented perpendicularly with a compressive load using a universal testing machine until fracture. The fracture resistance (N) of RBC and PICN was separately analyzed using two-way ANOVA and Tukey’s post-hoc test (α = 0.05). Results: The fracture resistance of each material was significantly influenced by the material thickness and cementation strategy (P < 0.05). Irrespective of the material type and cementation strategy, thicker materials exhibit higher fracture resistance. For RBC, the fracture resistance of the LC cement group was significantly higher than that of AC cement only at 0.8 mm thickness. For PICN, the LC-cement cementation strategy produced superior fracture resistance, regardless of the restoration thickness. Conclusions: The fracture resistance of Cerasmart 270 was higher for the thicker material; the fracture resistance of LC cement was higher than that of AC cement at 0.8 mm thickness cemented to dentin. In comparison, LC cement showed the highest fracture resistance for Vita Enamic for both material thicknesses.