Ząb and other 84,100 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
It is an image of a tooth. There are two medium length roots at the bottom, they are fairly symmetrical. The top is rounded and divided into two bumps, with a short diagonal line in the middle to indicate the groove in the tooth.