ProLab iQ Volume 23, 2020 page 18-36 , more by this authormore by this author back Key words: Trade name and manufacturer: PlaneSystemPlaneFinderPlanePositionerZirkonzahnHafner PlaneSystemPlaneFinderPlanePositionerZirkonzahnHafner Original publication: Quintessenz Zahntechnik 2020;46(5):542–559.