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Important; affecting the merits of a case; causing a particular course of action; significant; substantial. A description of the quality of evidence that possesses such substantial Probative value as to establish the truth or falsity of a point in issue in a lawsuit.

A material fact is an occurrence, event, or information that is sufficiently significant to influence an individual into acting in a certain way, such as entering into a contract. In formal court procedures, a material fact is anything needed to prove one party's case, or tending to establish a point that is crucial to a person's position.

A material issue is a question that is in dispute between two parties involved in litigation, and that must be answered in order for the conflict to be resolved.

A material witness is a person whose testimony is a necessary element of a lawsuit. An individual who is considered a material witness can be compelled to appear in court and provide testimony. In the event that the person's safety is endangered as a result of his or her planned or actual testimony, he or she may be given legal protection or held in Protective Custody.

West's Encyclopedia of American Law, edition 2. Copyright 2008 The Gale Group, Inc. All rights reserved.


adj. 1) relevant and significant in a lawsuit, as in "material evidence" as distinguished from totally irrelevant or of such minor importance that the court will either ignore it, rule it immaterial if objected to, or not allow lengthy testimony upon such a matter. 2) "material breach" of a contract is a valid excuse by the other party not to perform. However, an insignificant divergence from the terms of the contract is not a material breach.

Copyright © 1981-2005 by Gerald N. Hill and Kathleen T. Hill. All Right reserved.
References in periodicals archive ?
A Randomized Controlled Study of Mineral Trioxide Aggregate and Super Ethoxy-benzoic Acid as Root-end Filling Materials in Endodontic Microsurgery: Long-term Outcomes.
* Score 3: Moderate to great presence of filling materials remnants (50%-75%);
Conventional primary root-canal filling essentially involves placing filling material into the pulp chamber using a plastic instrument or lentulo and packing it into the canal with a root canal plugger or lentulo, followed by a cotton pellet (18).
The filling material specimens with various initial porosity and cementing materials are tested under the fixed pore water pressure gradient of 4.0 x [10.sup.-2] MPa/mm.
Katsuumi, "Removal of root canal filling materials using Er:YAG laser irradiation," Dental Materials Journal, vol.
Dye leakage of four root end filling materials: Effects of blood contamination.
Most widely accepted root canal filling material is gutta-percha (GP) in conjunction with a variety of sealers.
Garven, VP, marketing and technical services Technical Service: Complete tire testing, including resiliometer, endurance, tread separation, steer/camber angle, cleated wheel, cut-growth, rolling resistance and high speed; also tire strength, bead unseating, load/deflection, footprints, profiles, hydrostatic burst, sections and cord pulls; complete photographic/video capabilities in-house; forensic testing, accident reconstruction, failure analysis and consultation; designing and manufacturing of tire and wheel testing machinery and computerized controls; also, test other rubber parts such as air springs, marshmallows, engine mounts, tire valves, tire repair materials, sealants and filling materials; complete closed circle track testing facility for tires, vehicles and components
However, conventional filling materials are associated with a significant disadvantage in the form of an absence of fluid tight seals8, due to which they often contain voids that adversely affect the treatment outcome.
To determine the quality of an endodontic retreatment of a root canal, it is crucial that the tool for the assessment of removal of the filling materials is accurate and reliable, as well as workable in the clinic.