Impact of Erosive Media on Occlusal Veneers Constructed from CAD/CAM Hybrid Ceramics: An In-Vitro Study | ||
| Ahram Canadian Dental Journal | ||
| Volume 4, Issue 3, July 2025, Pages 178-196 PDF (702.4 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/acdj.2025.411232.1042 | ||
| Authors | ||
| Salwa Sobhy El-Saied* 1; Shaimaa Ahmed Abo-El Farag2 | ||
| 1BDS, MSc student, Department of Fixed Prosthodontics, Mansoura University, Egypt | ||
| 2Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura University, Mansoura National University (MNU), Egypt | ||
| Abstract | ||
| Abstract Objectives: This in-vitro study investigated the effect of hybrid ceramic material type and erosive media on the fracture resistance and failure mode of occlusal veneer restorations. Methods: Forty-eight natural mandibular first molars received occlusal veneer restorations (1.0 mm thickness) and were randomly divided into two groups (n = 24) according to the CAD/CAM hybrid ceramic material: SHOFU Block and VITA ENAMIC. Each group was further subdivided into three subgroups (n = 8) based on the erosive medium used for immersion: artificial saliva, simulated gastric hydrochloric acid, and Red Bull energy drink. Veneers were etched with 9.5% hydrofluoric acid, silanated, and adhesively luted to their corresponding prepared teeth using dual-cure resin cement. After 7 days of immersion in each medium at 37 °C with daily renewal, specimens were subjected to fracture testing in a universal testing machine. Failure modes were evaluated using a stereomicroscope. All data were recorded, tabulated, and statistically analyzed. Results: A statistically significant difference in fracture resistance was found for SHOFU Block immersed in artificial saliva (3853.45 ± 588.77 N; P < 0.05). No statistically significant differences were detected in the failure modes among all tested groups (P > 0.05). Conclusions: The type of hybrid ceramic material influences the fracture resistance of occlusal veneer restorations following erosive aging, but not the mode of failure. | ||
| Keywords | ||
| Keywords: Occlusal veneers; CAD/CAM; Hybrid ceramics; Erosive media; Fracture resistance | ||
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