grinding-tooth
111Hadrosaurid — Bilateria Hadrosaurids Temporal range: Late Cretaceous, 100–65.5 Ma …
112Dental amalgam controversy — Dental amalgam filling The dental amalgam controversy refers to the conflicting views over the use of amalgam as a filling material mainly because it contains the element mercury. The concern centers on the health effects of toxicity or allergy… …
113Maxillary second molar — Maxillary second molars of permanent and primary teeth marked in red. The maxillary second molar is the tooth located distally (away from the midline of the face) from both the maxillary first molars of the mouth but mesial (toward the midline of …
114Song Yingxing — (Traditional Chinese:宋應星; Simplified Chinese:宋应星; Wade Giles: Sung Ying Hsing; 1587 1666 AD) was a Chinese scientist and encyclopedist who lived during the late Ming Dynasty (1368 1644). He was the author of an encyclopedia that covered a wide… …
115Sleep medicine — is a medical subspecialty devoted to the diagnosis and therapy of sleep disturbances and disorders. From the middle of the 20th century, research has provided increasing knowledge and answered many questions about sleep wake functioning. [cite… …
116Profile angle — The profile angle of a gear is the angle at a specified pitch point between a line tangent to a tooth surface and the line normal to the pitch surface (which is a radial line of a pitch circle). This definition is applicable to every type of gear …
117Australopithecus — /aw stray loh pith i keuhs, peuh thee keuhs, aw streuh /, n. an extinct genus of small brained,large toothed bipedal hominids that lived in Africa between one and four million years ago. Cf. australopithecine. [ < NL (1905), equiv. to austral(is) …
118Mesopotamia, history of — ▪ historical region, Asia Introduction history of the region in southwestern Asia where the world s earliest civilization developed. The name comes from a Greek word meaning “between rivers,” referring to the land between the Tigris and… …
119technique — The manner of performance, or the details, of any surgical operation, experiment, or mechanical act. SEE ALSO: method, operation, procedure. SYN: technic. [Fr., fr. G. technikos, relating to techne, art, skill] airbrasive t. a method of grinding …
120molar — I mo•lar [[t]ˈmoʊ lər[/t]] n. 1) den Also called mo′lar tooth . a tooth having a broad biting surface adapted for grinding, being one of 12 in humans, with 3 on each side of the upper and lower jaws 2) den adapted for grinding, as teeth 3) den… …
