Comparing the fracture resistance of three different CAD/CAM occlusal veneers manufactured with different thicknesses. An in vitro study. | ||||
| Egyptian Dental Journal | ||||
| Volume 70, Issue 2 - Serial Number 4, April 2024, Page 1813-1826 PDF (647.59 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2024.270237.2940 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Zainab Diaa Soliman   1; Samar Saeed Bedair 2
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| 1Associate Professor, Conservative Dentistry Department Faculty of Dentistry Ain Shams University | ||||
| 2Assistant Professor in Egyptian Russian University | ||||
| Abstract | ||||
| Statement of the problem: posterior quadrants of the oral cavity are subjected to high occlusal loads. Performance of occlusal veneers is affected by fabrication material and veneer thickness. Objective: This study was conducted to assess the effect of veneer material and thickness on fracture resistance of CAD/CAM occlusal veneers. Materials and Methods: Sixty human premolars were prepared for occlusal veneers manufactured from three CAD/CAM materials; IPS E-max (E.max), Vita Enamic (VE) and Lava Ultimate (LU). Veneers were manufactured in 1 mm and 0.5mm thicknesses. (n=10). After cementation, specimens were subjected to Fracture resistance test and failure mode analysis. Results: Two-way ANOVA showed that both material and thickness had significant effect on the fracture resistance. Significant differences were present between the two thicknesses for VE and LU. For IPS E-max, no significant difference was present between the two thicknesses. Conclusion: E.max showed the highest fracture resistance in both thicknesses followed by LU and the lowest was recorded with VE. Results of 1mm Veneers were significantly higher than 0.5 mm. | ||||
| Keywords | ||||
| All Ceramic; Indirect composite; Hybrid Ceramic; Ultrathin Occlusal Veneers; Mode of failure | ||||
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