protrusion (redirected from double protrusion)

protrusion /pro·tru·sion/ (-troo´zhun)

1. extension beyond the usual limits, or above a plane surface.

2. the state of being thrust forward or laterally, as in masticatory movements of the mandible.protrus´ive

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pro·tru·sion (pr-trzhn)

n.

1. The act of protruding.

2. The state of being protruded.

3. A position of the mandible forward from centric relation.

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protrusion

[-tro̅o̅′zhən]

Etymology: L, protrudere, to push forward

a state or condition of being forward or projecting.

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protrusion (prōtroo´zhn),

n a situation in which the teeth or jaws protrude farther forward than normal.

protrusion, bimaxillary,

n a relatively forward position, or prognathism, of the maxillary and mandibular teeth, alveolar processes, or jaws.

protrusion, double,

n a definite labioversion of the maxillary and mandibular anterior teeth.

protrusion, forward,

n a protrusion forward from the centric position.

protrusion, mandibular,

n an abnormal protrusion of the mandible, as in a Class III malocclusion.

protrusion, maxillary,

n an abnormal protrusion of the maxillae.

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protrusion

extension beyond the usual limits, or above a plane surface.

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herniated disk

Herniated intervertebral disk, herniated nucleus pulposus, prolapsed intervertebral disk, slipped disk Neurology The herniation of an intervertebral disk, most commonly, lumbar; the term herniation in this context describes a spectrum of disk defects

Herniation disk types, used for MRI exams

Bulge–circumferential symmetric extension of the disk beyond interspace

Protrusion–focal or asymmetric extension of the disk beyond interspace

Extrusion–more extreme extension of the disk beyond interspace Note: Bulges and protrusions on MRI examination are common findings in normal subjects, and appear to be coincidental findings–NEJM 1994; 331:69oa