Chapt 18 Dental Ceramics Flashcards
Alumina core
The framework of a crown or bridge that is made of Al2O3.
CAD-CAM ceramic
A partially or fully sintered ceramic blank that is used to produce a dental core or veneer structure using a computer-aided design (CAD) and or milling (CAM) process.
Castable ceramic
A glass specially formulated to be cast into a mold and converted by heating to a glass-ceramic as a core coping or framework for a ceramic prosthesis (see Glass-ceramic).
Ceramic frits
Powdered ceramic material fired in a dental lab to produce a dental porcelain veneer layer over a core material (metal or ceramic). Frits may be glass or a mixture of glass and crystalline particles, which commonly contain inorganic pigments.
Ceramic, glaze
Fine glass powder that can be fired on a dental ceramic core or dental porcelain to form a smooth, glassy surface. (See natural glaze.)
Ceramic, pressable (hot-pressed ceramic)
Ceramic with a high glass content that can be heated to a temperature and forced to flow under uniaxial pressure to fill a cavity in a refractory mold
Fixed dental prosthesis (FDP)
An inlay, onlay, veneer, crown, or bridge that is cemented to one or more teeth or dental implant abutments. Often used to describe a bridge prosthesis.
Fixed partial denture (FPD)
A bridge that replaces one or more missing teeth. (However, fixed dental prosthesis (FDP) is the universally preferred term.)
Glaze ceramic
A specially formulated ceramic powder that is mixed with a liquid, applied to a ceramic surface, and heated to an appropriate temperature for a sufficient time to form a smooth glassy layer. (See natural glaze.)
Metal-ceramic prosthesis
A partial crown, full crown, or multiple-unit fixed dental prosthesis made
from a metal substrate and an adherent oxide to which dental porcelain is bonded for esthetic enhancement and functional anatomy.
The terms porcelain fused to metal (PFM),
porcelain bonded to metal (PBM),
porcelain to metal (PTM),
metal-ceramic (MC) is the internationally accepted term.
Natural glaze
A superficial layer on a ceramic-ceramic or metal-ceramic prosthesis formed by heating a dental porcelain to form a smooth glassy layer.
Porcelain, opaque
A fine dental porcelain, provided either as a paste or powder that is used to mask the color of a metal substructure or ceramic core for fixed prostheses.
Sintering
Process of heating closely packed particles below their melting temperature to promote atomic diffusion across particle boundaries and densification of the mass.
Zirconia
A partially stabilized zirconium oxide, usually in the tetragonal phase (t-ZrO2), that is used primarily as a core (framework) for dental prostheses. (It has also been introduced as a monolithic ceramic to be used without a veneering ceramic.)
Zirconia core
A partially stabilized tetragonal zirconia (stabilized either by ceria or yttria) that is used for producing the core veneered framework or substructure for crowns or bridges.
