Importance of the Casting Process. Comparative Survey of the Commonly Used Ni-Cr Dental Alloys

• Published in: Particulate science and technology 2013-11, Vol.31 (6), p.663-667
• Main Authors: Gatin, E., Luculescu, C., Birjega, R., Barna, E.
• Format: Article
• Language: English
• Subjects: Alloys; Casting; Centrifugal casting; Comparative analysis; Crystal lattices; Dental alloys; Dental materials; Dental prostheses; Diffraction; EDX; grain-stopper; Intermetallic compounds; Morphology; Ni-Cr metal alloy; Nickel base alloys; Restoration; Scanning electron microscopy; SEM
• ISSN: 0272-6351; 1548-0046
• DOI: 10.1080/02726351.2013.785452

Mobile or fixed dental prostheses are a common and important part of life. Many noble metal-based alloys have been used in prosthodontics, and they need a correct evaluation of their technical, biological, and clinical properties. The present study proposes a new approach for the manufacturing process. We emphasize the key role of each step for combined process of heating, casting and spin for completing works of Ni-Cr alloys with improved physical-chemical properties, as a protocol for quality of the obtained physiognomic dental restorations. The differences in composition distribution between cast and raw materials were investigated by energy dispersive x-ray spectroscopy (EDX), while the surface morphology was inspected by scanning electron microscopy (SEM). Important aspects related to crystal lattice were revealed through the x-ray diffraction (XRD) method and they are closely related to the centrifugal casting process.