Mechanical Wear and Surface Roughness of Glass and Hybrid Ceramics | ||||
| Egyptian Dental Journal | ||||
| Article 48, Volume 64, Issue 1 - January (Fixed Prosthodontics, Dental Materials, Conservative Dentistry & Endodontics), January 2018, Page 795-802 PDF (1.66 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2018.78090 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Ahmad Khaled Abo El Fadl | ||||
| Lecturer of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University. Guest researcher, Oral technology Department, Bonn, Germany. | ||||
| Abstract | ||||
| Aim: The purpose of this invitro study was to evaluate wear resistance and surface roughness of two hybrid ceramics in comparison to lithium disilicate glass ceramic before and after mechanical abrasion. Materials and methods: Thirty samples were divided according to material of construction into three groups, group (1): Lithium disilicate glass ceramic (IPS e.max, n=10), group (2): Resin nanoceramic (Lava Ultimate, n=10), group (3): Polymer infiltrated ceramic (Vita Enamic, n=10). All samples were fabricated out of CAD CAM ceramic blocks, weighed and evaluated for surface roughness before and after mechanical wear. Results: Resin nanoceramic (Lava ultimate), showed significantly low weight loss and surface roughness change after mechanical wear than IPS e.max. The polymer infiltrated ceramic (Vita Enamic) showed significantly high surface roughness than Resin nanoceramic (Lava ultimate), while IPS e.max showed the highest weight loss and surface roughness change. Conclusions: Resin nanoceramics revealed highest mechanical wear resistance contributed by terms of weight loss and surface roughness change, while Lithium disilicate glass ceramic showed the least wear resistance. | ||||
| Keywords | ||||
| Wear; Surface roughness; Glass ceramics; Hybrid ceramics | ||||
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