Pulp chamber

chamber /cham·ber/ (chām´ber) an enclosed space.

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anterior chamber of eye  the part of the aqueous-containing space of the eyeball between the cornea and the iris.

aqueous chamber  the part of the eyeball filled with aqueous humor; see anterior c. and posterior c.

counting chamber  the part of a hemacytometer consisting of a microscopic slide with a depression whose base is marked in grids, and into which a measured volume of a sample of blood or bacterial culture is placed and covered with a cover glass. Cells and formed blood elements in any given square can then be counted under a microscope.

diffusion chamber  an apparatus for separating a substance by means of a semipermeable membrane.

Haldane chamber  an air-tight chamber in which animals are confined for metabolic studies.

hyperbaric chamber  an enclosed space in which gas (oxygen) can be raised to greater than atmospheric pressure.

ionization chamber  an enclosure containing two or more electrodes between which an electric current may be passed when the enclosed gas is ionized by radiation; used for determining the intensity of x-rays and other rays.

posterior chamber of eye  the part of the aqueous-containing space of the eyeball between the iris and the lens.

pulp chamber  the natural cavity in the central portion of the tooth crown that is occupied by the dental pulp.

relief chamber  the recess in a denture surface that rests on the oral structures, to reduce or eliminate pressure.

Thoma-Zeiss counting chamber  a common type of counting c.

vitreous chamber  the vitreous-containing space in the eyeball, bounded anteriorly by the lens and ciliary body and posteriorly by the posterior wall of the eyeball.

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pulp chamber

n.

The portion of the pulp cavity that is contained in the crown or body of a tooth.

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Pulp chamber

The area within the natural crown of the tooth occupied by dental pulp.

Mentioned in: Root Canal Treatment

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chamber,

n an enclosed area.

chamber, air-equivalent ionization,

n a chamber in which the materials of the wall and electrodes produce ionization essentially similar to that produced in a free-air ionization chamber.

chamber, air-wall ionization,

n an ionization chamber with walls of material of low atomic number, having the same effective atomic number as atmospheric air.

chamber, extrapolation ionization

n an ionization chamber with electrodes of which the spacing can be adjusted and accurately determined to permit extrapolation of its reading to zero chamber volume.

chamber, free-air ionization,

n an ionization chamber in which a delimited beam of radiation passes between the electrodes without striking them or other internal parts of the equipment. The electric field is maintained perpendicular to the electrodes in the collecting region; as a result the ionized volume can be accurately determined from the dimensions of the collecting electrode and limiting diaphragm. This is the basic standard instrument for dosimetry within the range of 5 to 400 kV.

chamber, ionization

n an instrument for measuring the quantity of ionizing radiation, in terms of the charge of electricity associated with ions produced within a defined volume of air.

chamber, monitor ionization,

n an ionization chamber used for checking the constancy of performance of the roentgen-ray apparatus.

chamber, pocket ionization,

n a small, pocket-sized ionization chamber used for monitoring radiation exposure of personnel. Before use it is given a charge, and the amount of discharge is a measure of the quantity of radiation received.

chamber, pulp,

n (pulp cavity), the space occupied by the pulp.

chamber, relief,

n a recess in the impression surface of a denture created to reduce or eliminate pressure from the corresponding area of the oral cavity.

chamber, standard ionization,

n See chamber, ionization, free-air.

chamber, suction,

n See chamber, relief.

chamber, thimble ionization,

n a small cylindrical or spherical chamber, usually with walls of organic material.

chamber, thin-wall ionization,

n an ionization chamber having walls so thin that nearly all secondary corpuscular rays reaching them from external materials can penetrate them easily.

chamber, tissue-equivalent ionization,

n a chamber in which the walls, electrodes, and gas are selected to produce ionization essentially equivalent to the characteristics of the tissue under consideration.

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pulp (dental) (pulp),

n the tissue in the central portion of the tooth, made up of blood vessels, nerves, and cellular elements, including odontoblasts, that forms dentin and is covered by it. Also called
tooth pulp.

pulp amputation,

n See pulpotomy.

pulp, anachoresis of

n the localization of microbes from the bloodstream in a damaged pulp.

pulp canal,

n See canal, pulp.

pulp capping,

n See capping, pulp.

pulp cavity,

n See cavity, pulp.

pulp chamber,

n See chamber, pulp.

pulp, dental,

n See pulp.

pulp extirpation,

n See pulpectomy.

pulp horn,

n See horn, pulp.

pulp involvement,

n See involvement, pulp.

pulp, mummification of,

n a dry gangrene of the dental pulp in which the pulp dries and shrivels.

pulp removal,

n See pulpectomy.

pulp stone,

n See denticle.

pulp test,

n the application of a physical stimulus (electrical, heat, or cold) to determine the degree of vitality of the pulp tissue.

pulp test, thermal,

n a method of applying a hot or cold stimulus to any tooth to assess the amount and degree of vitality of the structure. The clinician may use heated water, cold drinks, ice sticks, or blasts of air.

pulp tester,

n (vitalometer) an electric device of high or low frequency designed to determine the response of a pulp to an electrical stimulus.

pulp, tooth,

n See pulp.

pulp vitality,

n the health status of the pulp. When the pulp tissue of a tooth has undergone complete degeneration or has been removed, the tooth is termed pulpless or nonvital.

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pulp

any soft, juicy animal or vegetable tissues, e.g. citrus pulp.

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pulp canal

root canal.

pulp cap

pulp of the feather produced inside the calamus by the follicular tissue. The pulp protrudes through the aperture in the wall of the shaft and forms the external pulp caps. Internal pulp caps are formed within the calamus.

pulp cavity

the pulp chamber and the root canal in a tooth.

pulp chamber

the cavity at the center of the tooth which contains most of the pulp.

dental pulp

see dental pulp.

pulp polyp

superficial hyperplasia of dental pulp, usually after exposure due to injury such as fracture of a tooth.

red pulp, splenic pulp

the dark reddish brown substance filling the interspaces of the splenic sinuses.

tooth pulp

dental pulp.

white pulp

sheaths of lymphatic tissue surrounding the arteries of the spleen.