Chapter 9: Dental Ceramics Flashcards
Materials composed of inorganic metal oxide compounds, including porcelain and similar ceramic materials that require baking at high temperature to fuse small particles together.
Ceramics
Ceramic materials with a silica (glass) matrix with or without fillers such as leucite or lithium disilicate
Glass-based ceramics
Crystalline-based ceramics without a glass matrix
Non-glass based ceramics
Ceramic restoration with no metal core
All-ceramic restoration
A tooth-colored ceramic material composed of crystals of feldspar, alumina, and silica that are fused together at high temperatures to form a hard, uniform, glasslike material
Porcelain
Glass-based ceramics with lithium disilicate fillers to enhance physical and mechanical properties, especially flexural strength
Lithium Disilicate Ceramics
A nonglass polycrystalline ceramic that is the strongest ceramic used in dentistry
Zirconia
Strength required to resist bending of a bar of ceramic material to its point of fracture
Flexural Strength
Material’s ability to resist fracture from crack propagation
Fracture Toughness
Fusion of ceramic particles at their borders by heating them to the point that they just start to melt
Sintering
Process whereby ceramic powder is mixed with a water-based liquid to form a mass or slip. The slip is pressed into a form and baked at a high temperature.
Slip-Casting
Pressing ceramic material into a mold at high temperature and pressure
Heat-Pressing
Computer-assisted design/computer-assisted machining applies technology that used computes to design and a milling device to cut restorations from blocks of dental materials.
CAD/CAM
Thin layer of ceramic or composite resin material that is bonded to the fronts of teeth to improve their appearance
Veneer
Restoration that has a metal core over which porcelain is fused at high temperature. Commonly referred to as porcelain-fused-to-metal or porcelain-bonded-to-metal.
Porcelain-Metal Restoration
