pin (redirected from retention pin)

pin (pin) a slender, elongated piece of metal used for securing fixation of parts.

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Steinmann pin  a metal rod for the internal fixation of fractures.

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pin (pn)

n.

1. A thin rod for securing the ends of fractured bones.

2. A peg for fixing the crown to the root of a tooth.

v.

To fasten or secure with a pin or pins.

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pin,

n a small cylindrical piece of metal.

pin, cemented,

n a metal rod cemented into a hole drilled into dentin to enhance retention of a restoration.

pin, friction-retained,

n a metal rod driven or forced into a hole to enhance retention. It is retained solely by elasticity of dentin.

pin, incisal guide,

n a metal rod that is attached to the upper member of an articulator and that touches the incisal guide table. It maintains the established vertical separation of the upper and lower arms of the articulator.

pin, retention,

n the frictional grip of small metal projections extending from a metal casting into the dentin of the tooth.

pin, self-threading,

n a pin screwed into a hole prepared in dentin to enhance retention.

pin, sprue,

n 1. a solid or hollow length of metal used to attach a pattern to the crucible former.
n 2. a metal pin used to form the hole that provides the pathway through the refractory investment to permit the entry of metal into a mold.

pin, Steinmann,

n.pr a firm metal pin that is sharpened on one end; used for the fixation of fractures. It is sometimes passed through the maxilla or mandible to provide external points for attachment of upward-supporting devices.

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pin

a slender, elongated piece of metal used for securing fixation of parts.

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pin bone

the triangular ischial tuber; a term used almost exclusively in cattle.

pin cutter

a sophisticated, surgical version of a boltcutter, usually with multiple scissor joints.

pin drill

a sterilizable drill chuck can be fitted to a surgical power drill and fitted with a surgical bit to match plating screws or orthopedic pins.

intramedullary pin

see internal fixation.

Steinmann pin

a metal rod for the internal fixation of fractures. See also steinmann pin.

pin teat

inverted nipple, seen mostly in sows.

pin toes

toes turned inwards. Called also pigeon toes.

pin vise

a device for attaching to the end of an intramedullary pin to provide a grip for placement in bone. See also chuck.