- tooth undercut
- 根切
English-Chinese machine dictionary (英汉机械大词典). 2013.
tooth undercut
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undercut — v. /un deuhr kut , un deuhr kut /; n., adj., /un deuhr kut /, v., undercut, undercutting, n., adj. v.t. 1. to cut under or beneath. 2. to cut away material from so as to leave a portion overhanging, as in carving or sculpture. 3. to offer goods… … Universalium
undercut — 1. That portion of a tooth that lies between the survey line (height of contour) and the gingivae. 2. The contour of a cross section of a residual ridge or dental arch which wou … Medical dictionary
circumferential clasp arm — a clasp arm that originates above the height of contour, traverses part of the suprabulge portion of the tooth, approaches the tooth undercut from an occlusal direction, and terminates in a retentive undercut lying gingival to the height of… … Medical dictionary
bar clasp arm — a clasp arm that serves as an extracoronal retainer, originating from the denture base, a major or minor connector, or the framework of a denture, traverses soft tissue, approaches the tooth undercut area from a gingival direction, and terminates … Medical dictionary
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Glass ionomer cement — A Glass Ionomer Cement (GIC) is one of a class of materials commonly used in dentistry as filling materials and luting cements. These materials are based on the reaction of silicate glass powder and polyalkeonic acid. These tooth coloured… … Wikipedia
File (tool) — A file (or hand file) is a hand tool used to shape material by cutting. A file typically takes the form of a hardened steel bar, mostly covered with a series of sharp, parallel ridges or teeth . Most files have a narrow, pointed tang at one end… … Wikipedia
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