Long Span Restorations using Zirconia Frameworks
Journal Title: Modern Approaches in Dentistry and Oral Health Care - Year 2018, Vol 1, Issue 3
Abstract
Porcelain fused to metal restorations have been considered as the gold standard in prosthetic dentistry for a long time thanks to their mechanical properties. However, several drawbacks (light transmission blocked by the metal and the opaque porcelain, metal corrosion phenomenon, gingival tattoo and potential allergic reactions) have limited its use. Recently, all ceramic materials have been introduced in prosthetic dentistry for the fabrication of natural like crowns and fixed partial dentures using CAD/CAM techniques. Zirconia seems to be of great interest thanks to its high esthetics and mechanical characteristics. This article describes, through a clinical report the use of Y-TZP based prostheses in long span fixed partial denture to restore function and esthetics. Porcelain fused to metal restorations has been considered as the gold standard in prosthetic dentistry for a long time thanks to their mechanical properties. However, they have been criticized for their esthetic outcome. In fact, light transmission is blocked by the metal and the opaque porcelain, needed to mask the underlying metal substance causes light reflectivity to rise [1-4]. Metal corrosion phenomenon, gingival tattoo and allergic reactions have also been reported. Patients have always sought for long-lasting and natural like restorations along with metal free materials mimicking the natural dentition [5-7]. To overcome the shortcomings of porcelain fused to metal restorations, advances in dental materials have set the space for the development of all- ceramic restorations which offer potential excellent esthetics thanks to their optical behavior [8-11]. According to Kelly et al. [12], core translucency is one of the most important factors in meeting esthetic and functional requirements. Other advantage consists in long term stability, excellent biocompatibility and corrosion resistance. Thus, all ceramic restorations integrate well with soft tissues. They guarantee maintenance of gingival health limiting bacterial adhesion accumulation and inflammatory reaction [13].
Authors and Affiliations
I Azouzi, D Hadyaoui, B Harzallah, M Cherif
Keywords
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- EP ID EP604786
- DOI 10.32474/MADOHC.2018.01.000113
- Views 79
- Downloads 0
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