It is a dental instrument used by dentists and dental hygienists to remove calculus subgingivally on the mesial and distal surfaces on all teeth throughout the mouth.
The syntette is held parallel to the tooth and pushed under the gingiva, rotated slightly and moved upwards in a ‘pull’ stroke (vertical movement).
The syntette has two elliptical cutting edges and a rounded toe.
Leif Ericsson himself describes the inventing process and naming of the instrument as follows: The Syntette has been featured in several peer reviewed articles.
[3][4][5][6][7] In addition to the original Syntette, a similar design was introduced under the brand names Scandette and Double Gracey.