UNIVERSITY AUTONOMY OF CIUDAD JUÁREZ 1HTTP://NOTIJUAREZ.COM/WP 1 ICB ESTO DEPARTAMENT OF STOMATOLOGY OXIDE CERAMICS DRA.SELENE PÉREZ GONZÁLEZPROFESSOR: DR. ALFREDO NEVÁREZ RASCÓN 2 HTTP://WWW.LAREDNOTICIAS.COM/FOTOS/ICB2.JPG
TRANSPARENT COMPARISON BETWEEN METAL-CERAMIC(RIGHT PHOTO) AND AESTHETIC CERAMIC (LEFT PHOTO)• http://www.nhakhoaminhkhai.com/services_detail.php?cat=25&id=167&lang=language
INTRODUCTION• 1965 mclean and Hughes• Opened the world of metal-free ceramics
• oxide ceramics containing oxidizing components only, but also commonly referred to as ceramics and the mixed oxide components• http://www.ivoclarvivadent.us/en-us/products/alloys/predominantly-base-alloys/nickel-chromium/colado-nc• They are polycrystalline materials with little or no vitreous phase, which is the weak part of the porcelain. Due to its high opacity are used as internal caps ceramic restorations.
• These authors feldspathic porcelain incorporated significant amounts of aluminum oxide reducing the proportion of quartz. The result was a mixed material having a microstructure in which the alumina, having a high melting temperature, remained suspended in the matrix.
COMPOSITION• incorporated 50% aluminum oxide feldspathic porcelain• (The presence of alumina causes a decrease glass to its own characteristics, which is less brittle and reduces the risk of devitrification process of crystallization of the ceramic what becomes brittle and opaque to lose amorphous or glassy structure• (- Quartz) mass hardener:The quartz constitutes the crystalline phase.
• It created a more effective reinforcer twice the feldspathic
TABLE OF TRANSLUCENCY OF CERAMICSYSTEMS• Translucen opaque• Finesse In-Ceram Alumina• Fortress In-Ceram Zirconia• Optec-HSP Procera AllCeram• IPS Empress I Procera Zirconia• IPS Empress II IPS e.max ZirCAD• IPS e.max CAD Cercon• IPS e.max Press DC-Zirkon• In-Ceram Spinell Lava• In-Ceram YZ
• In – ceram zirconia (vita) :• high resistance http://www.nhakhoaminhkhai.com/services_detail.php?cat=25&id=167&lang=language• Aluminum (67%), reinforced zirconium (33%)• Subsequent use in bridges