line angle

line angle
an angle formed by the junction of two planes; used to designate the junction of two surfaces of a tooth, or of two walls of a tooth cavity preparation. Line angles of the posterior teeth include the mesio-occlusal, linguo-occlusal, mesiolingual, distolingual, mesiobuccal, distobuccal, bucco-occlusal, and disto-occlusal angles. Those of the anterior teeth include the labioincisal, linguoincisal, mesiolabial, distolabial, mesiolingual, and distolingual angles. See table of cavity angles and illustration of tooth angles.

Medical dictionary. 2011.

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