Kikki's Workshop Q&A: Let's ask Kikki ! Kikki's Workshop
Are there any power shovels that have a bucket without a tooth ?
Yes. The edge part of a hydraulic excavator is exchangeable, and some of those buckets come without a tooth.

When loading coal or wooden chips, it uses a bucket with a flat edge to prevent the stuff from falling through a tooth.
*This hydraulic excavator is used to load coal.