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Three-Dimensional Evaluation of Wear Performance in CAD/CAM Ceramics and Hybrids: A Clinical Study Using Intraoral
D Özkurt1, S Çıklaçandır2, E Akan3
1Karşıyaka Oral and Dental Health Center, Izmir Provincial Health Directorate, Izmir, Turkey.
Aim:
To minimize discomfort in the occlusal region and safeguard the opposing tooth, CAD-CAM materials should have wear characteristics that are comparable to those of real teeth. This research aimed to assess, using digital scans, the volumetric changes resulting from post-functional wear in prosthetic restorations made with various ceramic blocks that enable single-session applications in CAD-CAM systems.
Materials And Methods:
Three types of ceramic blocks were performed: hybrid (Lava Ultimate), feldspathic (Vita Mark II), and lithium disilicate (IPSe.max Cad). Digital scans were acquired from 10 patients from each group, and the volumetric losses in 6 months of wear were calculated in 3-Matic software. Additionally, a statistical analysis was performed to determine the correlation between the materials' hardness and wear volume losses.
Results:
Volume loss was measured with IPSe.max Cad, Vita Mark II, and Lava Ultimate, from low to high. A statistically significant difference (P < 0.05) occurred between the IPS e.max Cad and Lava Ultimate groups; however, no such difference was observed between the other groups (P > 0.05). In addition, the materials' hardness was determined to have a significant impact on their wear behavior (P < 0.05).
Conclusion:
IPSe.max Cad outperformed other ceramic blocks with little wear because the wear amount of these blocks, which are commonly used in prosthetic dental treatment applications, directly influences long-term clinical effectiveness.
