Akademik

A tool or implement. [L. instrumentum]

- diamond cutting instruments in dentistry, cylinders, disks, and other cutting instruments to which numerous small diamond pyramids have been attached by a plating of metal.

- hearing i. SYN: hearing aid.

- Krueger i. stop a mechanical device limiting the insertion of a root canal i. into a canal.

- plugging i. SYN: plugger.

- purse-string i. an intestinal clamp with jaws at an angle to the handle; when closed across the bowel, large grooved interdigitating serrations allow passage of a straight needle and suture through each side to form a purse-string suture, after which the clamp is removed.

- Sabouraud-Noiré i. an obsolete device for measuring the quantity of x-rays by means of the change in color of a disk of barium platinocyanide which exposure to them produces; the unit used in this method is called tint B. see erythema dose.

- stereotactic i., stereotaxic i. an apparatus attached to the head, used to localize precisely an area in the brain by means of coordinates related to intracerebral structures.

- test handle i. a root canal i. the handle of which is similar to a collet chuck and which can be secured in position on the root canal i. to adjust its effective length.

in·stru·ment 'in(t)-strə-mənt n any implement, tool, or utensil (as for surgery)