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Universal curette: Columbia 13/14
Also called: universal curette, Columbia 13/14, 4R/4L
A curette with two cutting edges that can scale every surface of every tooth.
A curette has a rounded toe and a rounded back, so it can slide under the gum without cutting it. A universal curette has two cutting edges, and its face sits at 90 degrees to the lower shank, so one double-ended instrument can reach the whole mouth. The Columbia 13/14 has a shorter, more curved blade that suits shallower pockets.
How to spot it
- Rounded toe and rounded back (a sickle has a point).
- Blade curves up only, not to the side; both edges are sharp.
- Universal vs. Gracey: look at the face from the end; a universal face is level (90 degrees), a Gracey face is tilted.
What it is used for
- Scaling above and below the gumline on front and back teeth.
- Light to moderate calculus.
Safety and care
- Critical item (it goes into soft tissue or touches bone): clean it, package it and heat-sterilize it after every patient.
- Sharp working end: carry it point-down in a closed cassette, and never reach blindly into a pile of instruments.
Related
Sources: Hu-Friedy Group. Universal curettes (Columbia 13/14, Barnhart 5/6), Alharbi H. Periodontal Hand Instruments (lecture handout). King Saud University, 2016-2017, Gehrig JS, Shin DE. Fundamentals of Periodontal Instrumentation and Advanced Root Instrumentation, 9th ed. Jones & Bartlett, 2023 (plus Newman & Carranza's Clinical Periodontology), MA Dental. Columbia 13-14 universal curette product description