This Ząb icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
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.