• Czechowski, Łukasz

Abstract

Currently, beside traditional inlays, onlays and overlays for the reconstruction of crowns of damaged teeth, it is possible to use less invasive occlusive veneers. These restorations are used to rebuild the chewing surfaces of the teeth, to reconstruct occlusal surfaces damaged by erosion, to restore the correct occlusion, and to increase the occlusal height. The aim of the study is to present the influence of the material and the thickness of occlusive veneers on their fracture resistance based on review of the literature. The article discusses selected mechanical properties of modern dental materials used to make intracoronary restorations: feldspar ceramics, leucite ceramics, lithium silicate, lithium disilicate, zirconium oxide, nanoceramics and hybrid ceramics. Due to their strength, nanoceramics, zirconium oxide ceramics or lithium disilicate and lithium silicate ceramics reinforced with zirconium oxide crystals should be the preferred materials for occlusal veneers. The thickness of the nano-ceramic and zirconium oxide restorations on the occlusal surface can be limited to 0.5 mm. Lithium disilicate ceramic veneers should have a minimum thickness of 0.7- 1 mm. Occlusal veneers with a thickness of 1.5 mm are the most resistant to fractures, regardless of the material used

Topics

• impedance spectroscopy
• surface
• laser emission spectroscopy
• zirconium
• strength
• Lithium
• oxide ceramic
• silicate ceramic