All ceramic restorations

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The most preferable crown restoration for anteriors due to their esthetic enhancements..

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All ceramic restorations

  1. 1. BY: Hrudi Sundar SahooMeenakshi Ammal Dental college, Chennai
  2. 2.  Introduction Constituents Classification Advancements in Ceramic Dentistry In-Ceram Tooth preparation Laboratory processing Cementation and finishing
  3. 3.  Non-crystalline glasses composed of structural units of silicon and oxygen (SiO4 tetrahedra). Most esthetic fixed restorations. Highly desirable esthetic properties.
  4. 4.  Major components: Feldspar, Quartz, Kaolin Other components: Oxides of sodium, Potassium, Calcium, Aluminium, Magnesium, Lithium etc. For colours: Oxides of Indium, Chromium, Tin, Iron, Cobalt, Cerium.
  5. 5.  Based on firing temperature: 1. High-fusing: 1,290 to 1,370°C (2,350 to 2.500T) 2. Medium-fusing: 1,090 to 1,260cC (2,000 to 2.300T ) 3. Low-fusing: 870 to 1,065DC (1,600 to 1,950°F)
  6. 6.  All ceramic crown- PJC by Land [1886] PJC with inner core of aluminous porcelain Twin Foil Technique Castable glass ceramics Shrink Free Ceramic crown IPS Empress In-Ceram
  7. 7.  Introduced by Sadoun (1985) Core material is alumina Manufactured by Slip casting, sintering, Glass absorption. Conventional porcelain applied to the core to give final contour and colour. Greater compressive strength than IPS Empress but lesser than Metal ceramic. Recommended for short span three unit anterior FPD.
  8. 8.  Ceramic crowns may be cemented with zinc phosphate, glass ionomer. or a dual- polymerizing resin cement such as Enforce with Fluoride. Ceramic crowns that have been etched internally and bonded with a composite resin cement are 50% stronger than similar crowns cemented with zinc phosphate cement.
  9. 9. THANK YOU!!!

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