extrusion

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extrusion

 [ek-stroo´zhun]
1. a pushing out.
2. in dentistry, the condition of a tooth pushed too far forward from the line of occlusion as a result of injury or of lack of opposing occlusal force.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ex·tru·sion

(eks-trū'zhŭn),
1. A thrusting or forcing out of a normal position.
2. The overeruption or migration of a tooth beyond its normal occlusal position.
Farlex Partner Medical Dictionary © Farlex 2012

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  
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

ex·tru·sion

(eks-trū'zhŭn)
1. A thrusting or forcing out of a normal position.
2. The overeruption or migration of a tooth beyond its normal occlusal position.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

ex·tru·sion

(eks-trū'zhŭn)
1. A thrusting or forcing out of a normal position.
2. The overeruption or migration of a tooth beyond its normal occlusal position.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Offers a line of multi-screw "ring extruders" from 3+ Extruder GmbH in Germany.
However, all of the flow parameters needed for a rubber extrusion model can be readily obtained using a capillary rheometer, typically a simple die arrangement attached to a common Brabender lab extruder. By extruding and weighing samples of material at different pressures, the apparent shear rate [[gamma].sub.a] and apparent shear stress [[tau].sub.a] can be determined using the equations:
Farrel CP (Compact Processor) combines the continuous mixer with a hot-fed extruder to provide a versatile, space-saving system featuring self-cleaning action.
Offers an in-line repelletizing system that takes trim through a dual-diameter extruder, a small, air-cooled repelletizer built by PAC, and conveys pellets back to the extruder.
Gobain), Plastipak, and Spartech, have converted some extruders to the new system, which fits any extruder from 3.5 to 8 in.
With growing popularity of more highly filled formulations, single-screw extruders have to be able to mix more like a twin-screw.
The new machine accomplishes continuous extruder operation by means of a positive-displacement gear pump and an additional melt accumulator.
New technologies will be featured in one section that will explain how to make extrudates with variable cross-section and composition along their length, to form curved sections and to control screw speed for individual extruders forming laminate structures.
Addex's first extruder with a gearless torque motor is called SlimLine (see Keeping Up with Extrusion) and is recommended for seven- and nine-layer lines.
The final section of the extruder (5) is designed to rapidly convey material away from the degassing section and to produce enough pressure to force the compound through the die and extrusion head (6).
Chapter titles include: Introduction to Extruders and their Principles, Single-Screw Extruders, Dry Extruders, Interrupted-Flight Expanders-Extruders, Twin-Screw Extruders, Preconditioning, Chemical and Nutritional Changes in Food during Extrusion, Practical Considerations in Extrusion Processing, Extruders in the Food Industry, followed by the Appendix.
Two machine builders offer sheet lines with 90-mm extruders that reportedly achieve double the usual output, thanks to four-motor torque drives From K&A Knoedler GmbH in Germany (represented here by Henschel America Inc., Green Bay, Wis.).