| instrument | A tool or implement. Origin: L. Instrumentum (05 Mar 2000) |
|---|---|
| test handle instrument | A root canal instrument the handle of which is similar to a collet chuck and which can be secured in position on the root canal instrument to adjust its effective length. (05 Mar 2000) |
| Krueger instrument stop | A mechanical device limiting the insertion of a root canal instrument into a canal. (05 Mar 2000) |