Prosthesis
is a replacemet for a missing body part.
Removable Appliance
is one that can be placed in and out of the mouth at the patient's will.
Noble Metals
include the valuable alloys gold (Au), palladium (Pd), and platinum (Pt).
Base Metals
Chromium-cobalt or chromium nickel may be used alone or in a mixture with noble alloys.
Porcelain
shells, veneer covers, or facings fused to the suface of a metal crown to give appearance of natural tooth surface. Abbreviated as PFM (porcelain fused to metal).
Composite
resin material used for tooth-colored replacement.
Acrylic
synthetic resin material used in fabrication of appliance parts, as covering for the metal frameworks, or as natural tissue replacement.
Hardeness
ability of material to withstand penetration.
Tensile Strength
capability of being stretched.
Elasticity
ability of material being stretched and then resume its original shape.
Ductility
ability to be drawn or hammered out as into a fine wire without breaking.
Malleability
ability to be pressed or hammered out into various forms and shapes.
Elongation
ability of a material to stretch before permanent deformation beings.
Inlay
Solid, cast restoration made in the shape of the preparation and cemented into place.
Onlay
Cast restoration usually replacing the chewing surface and some side walls.
Crown
A fabricated tooth-shape cover replacment for a missing
Full Crown
Cast-metal tooth-shaped cover that replaces entire crown area.
Jacket Crown
Thin, preformed, metal shield used to cover large ares of anterior crowns.
Dowel Crown
Full crown cover with dowel pin extending into the root canal of a pulpless tooth; usually positioned on anterior teeth.
Three-Quarter Crown
Similar to a full crown, covering all of the crown except the facial surface of the tooth which remains intact to present an esthetic, natural apperance.
Porcelain-Fused to Metal (PFM)
Crown that is one with a complete capping of metal base with fused porcelain to metal giving tooth contour, shape, and color.