investment

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investment

 [in-vest´ment]
1. any tissue, such as fascia, that envelops or covers other tissues or parts.
2. a material applied as a soft paste to a pattern that hardens to form a mold for casting.

in·vest·ment

(in-vest'ment),
1. In dentistry, any material used in investing.
2. In psychoanalysis, the psychic charge or cathexis invested in an object.

investment

/in·vest·ment/ (-vest´mint) material in which a denture, tooth, crown, or model for a dental restoration is enclosed for curing, soldering, or casting, or the process of such enclosure.

in·vest·ment

(in-vest'mĕnt)
1. In dentistry, any material used in investing.
2. In psychoanalysis, the psychic charge or cathexis invested in an object.

in·vest·ment

(in-vest'mĕnt)
In dentistry, any material used in investing.

investment (invest´ment),

n the material used to enclose or surround a pattern of a dental restoration for casting or molding or to maintain the relations of metal parts during soldering.
investment, casting,
n a type in which the casting mold is made in fabrication of gold or cobalt-chromium castings.
investment, gypsum-bonded casting,
n a type that can be bonded by a-hemihydrate, a derivative of gypsum, because the fusion temperatures of the metal alloys to be cast in it are relatively low. All gold alloy investments and some low-fusing cobalt-chromium alloy investments are gypsum bonded.
investment, hygroscopic
n a type specially designed for use with the hygroscopic investing techniques.
investment, phosphate-bonded casting,
n a type that is bonded by a phosphate and a metallic oxide that react to form a hard mass; generally used for high-fusing alloys.
investment, refractory,
n a type in which the investing materials can withstand the high temperatures used in soldering or casting.
investment, sectional,
n a type using a mold made in sections.
investment, silica-bonded casting,
n a type that is bonded by a silica gel that reverts to cristobalite in heating and is generally used for high-fusing alloys.
investment, soldering,
n a quartz type, preferably one with a very low thermal expansion, used for the investment of appliances during the soldering procedure.