artificial stone

artificial stone.

See dental stone.

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stone,

n an abrading instrument or tool.

stone, Arkansas,

n.pr a fine-grained stone, novaculite, used to make hones for the final sharpening of instruments.

stone, artificial,

n (dental stone), a specially calcined gypsum derivative similar to plaster of paris. Because its grains are nonporous, the product is stronger than plaster of paris.

stone, Carborundum

n.pr 1. a stone made of silicon carbide.
2. an abrasive, handpiece-mounted rotary instrument of various sizes, shapes, and degrees of abrasiveness.

stone, dental,

n (Hydrocal), 1. α-hemihydrate of calcium sulfate.
2. a gypsum product that, when combined with water in proper proportions, hardens in a plasterlike form. Used for making casts and dies.

stone, diamond,

n rotary instruments containing diamond chips as the abrasive. Available in various sizes, shapes, and abrasive consistency. Used for tooth reduction in operative dentistry and crown and bridge prostheses, tooth contouring in the occlusal adjustment procedure, and osseous and gingival contouring in periodontal surgery.

stone die,

n See die, stone.

stone, lathe,

n (lathe wheel), a grindstone mounted on a chuck and used on a lathe.

stone, mounted point,

n a small abrasive tooth of various shape and size bonded or cemented onto a shaft or mandrel.

stone, pulp,

n See denticle.

stone, rotary,

n the stone in a mandrel-mounted (power-driven) sharpening instrument.

stone, sharpening,

n a hand stone, or a stone driven mechanically, that is used to sharpen instruments.

stones, sharpening cone,

n.pl cylindrical or rounded rectangular stones used to sharpen curved blades.

stone, wheel,

n a small grindstone of Carborundum or corundum of various grit, mounted on a mandrel; of various thickness, ranging in diameter from ½ to 1 inch (1.3 to 2.5 cm).