vacuum casting : the casting of a material (i.e., metal, plastic) in the presence of a partial vacuum vacuum investing : the process of investing a pattern within a partial vacuum vacuum mixing : a method of mixing a material such as plaster of paris or casting investment below atmospheric pressure val·ue : the quality [...]
GPT Terms – U
January 4, 2010 By Leave a Comment
UCLA abutment substand: a colloquial term used to describe a dental crown that is attached directly to the implant body by means of a screw without an intervening abutment ultimate strength : the greatest stress that may be induced in a material at the point of rupture—called also ultimate tensile strength ul·tra·vi·o·let: radiant energy of wavelengths [...]
GPT Terms – T
January 4, 2010 By Leave a Comment
ta·ble: a flat surface; a raised horizontal surface—see GUIDE T., OCCLUSAL T. ta·per: in dentistry, the convergence of two opposing external walls of a tooth preparation as viewed in a given plane. The extension of those average lines within that plane form an angle describe as the angle of convergence tech·nic : a detailed procedure in [...]
GPT Terms – S
January 4, 2010 By Leave a Comment
sad·dle n, obs: see DENTURE BASE saddle pontic obs: a pontic with a broad concave facio-lingual area of contact with the residual ridge. It is also know as a ridge lap pontic. This type of pontic is known to be uncleanseable and result in tissue irritation at the area of contact with the ridge mucosa sag·it·tal : [...]
GPT Terms – R
January 4, 2010 By Leave a Comment
RAD: acronym for Radiation Absorbed Dose, a unit of measurement of the absorbed dose of ionizing radiation. The biologic effect of one rad varies with the type of radiation tissue is exposed to—see also GRAY radiation : the emission of electromagnetic waves, such as light, short wave, radio, ultraviolet, or x-rays, or particulate rays such as [...]
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