Category: F
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Ferrule
A metal band or ring used to fit the root or crown of a tooth. The ferrule is to be on sound tooth structure and ideally 2 mm or more in height. Any short tube or bushing for making a tight joint. A metal or rubber cap or ring that strengthens and protects the lower…
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Fenestration
A hole or opening in a body part, for example, a hole in alveolar bone or the soft tissue that covers the root of a tooth. With translucent areas, like windows. A surgical operation to relieve deafness by making a small opening in the inner ear. The provision of a hole in a scleral contact…
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Fenestrate
To puncture or perforate with one or several openings. With open or translucent areas, like windows. Pierced with one or more large holes.
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Feldspar
Any one of a group of minerals, principally aluminosilicate of sodium, potassium, calcium, or barium, that are essential constituents of nearly all crystalline rocks. A crystalline mineral of aluminum silicate with sodium, potassium, barium, and/or calcium; a major constituent of some dental porcelains.
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Feldkamp back projection
Standard method algorithm used with most CBCT for constructing slice sets.
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Feature locating object (FLO)
A general term used to describe a digital implant physical marker used in laboratory scanning, providing for the digital capture of the implant fixture/platform position.
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FEA (abbrev)
Finite element analysis.
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FDBA (abbrev)
Freeze‐dried bone allograft.
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Fatigue fracture (failure)
Structural failure caused by repetitive stresses, which cause a slowly propagating crack to cross the material.
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Fatigue failure
A structural failure caused by multiple loading episodes when all loads lie below the structure’s ultimate strength. Typically, such failures occur after multiple loading episodes.