| interocclusal record | A record of the positional relationship of the teeth or jaws to each other, recorded by placing a plastic material which hardens (such as plaster of Paris, wax, etc.) between the occlusal surfaces of the rims or teeth; the hardened material serves as the record; it may be registered in centric or eccentric positions, as (05 Mar 2000) |
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| occluding centric relation record | A registration of centric relation made at the established occlusal vertical dimension. (05 Mar 2000) |
| terminal jaw relation record | A record of the relationship of the mandible to the maxillae made at the vertical relation of occlusion and at the centric position. (05 Mar 2000) |
| three-dimensional record | A maxillomandibular record made at the occluding relation. (05 Mar 2000) |
| jaw relation record | A registration of any positional relationship of the mandible in reference to the maxillae. These records may be any of the many vertical, horizontal, or orientation relations. (12 Dec 1998) |
| face-bow record | <dentistry> A registration utilizing a face-bow of the position of the hinge axis and/or the condyles; the face-bow record is used to orient the maxillary cast to the opening and closing axis of the articulator. (05 Mar 2000) |
| functional chew-in record | A record of the natural chewing movements of the mandible made on an occlusion rim by teeth or scribing studs. (05 Mar 2000) |
| acid-base balance | The normal balance between acid and base in the blood plasma, expressed in the hydrogen ion concentration or pH, resulting from the relative amounts of acidic and basic materials ingested and produced by body metabolism, compared to the relative amounts of acidic and basic materials excreted from the body and consumed by body metabolism; the normal state of acid-base balance is not one of neutrality, with equal concentrations of hydrogen and hydroxyl ions, but a more alkaline state with a certain excess of hydroxyl ions. Synonym: acid-base equilibrium. (05 Mar 2000) |
| acid-base equilibrium | A condition in which the net rate of acid or alkali production by the body is balanced by the net rate of acid or alkali excretion from the body, resulting in a stable concentration of hydrogen ions in the body fluids. (12 Dec 1998) |
| acid-base imbalance | Disturbances in the acid-base equilibrium of the body. (12 Dec 1998) |
| acrylic resin base | A form made of acrylic resin molded to conform to the tissues of the alveolar process and used to support the teeth of a prosthesis. (05 Mar 2000) |
| aldehyde base | An obsolete term for an imide. (05 Mar 2000) |
| anterior cranial base | The portion of the internal base of the skull, anterior to the sphenoidal ridges and limbus, in which the frontal lobes of the brain rest. Synonym: fossa cranii anterior, anterior cranial base. (05 Mar 2000) |
| Bandrowski's base | <chemical> Reported cause of anaphylactic reaction. Synonym: n',n'-bis(4-aminophenyl)-2,5-diamino-1,4-quinonediimine (26 Jun 1999) |
| base | <chemistry> The nonacid part of a salt, a substance that combines with acids to form salts, a substance that dissociates to give hydroxide ions in aqueous solutions, a substance whose molecule or ion can combine with a proton (hydrogen ion), a substance capable of donating a pair of electrons (to an acid) for the formation of a coordinate covalent bond. (13 Nov 1997) |