Involute gear relatively easy to manufacture, so the modern use of gears, involute gear accounted for an absolute majority, while the cycloid gear and circular-arc gear is seldom used.

• 渐开线齿轮比较容易制造，因此现代使用的齿轮中 ，渐开线齿轮占绝对多数，而摆线齿轮和圆弧齿轮应用较少。