Abstract: A system of conically shaped dental burs mounted on the end of cylindrical shafts is disclosed. In one embodiment, the tip of the cone presents an abrasive surface, while the basal edge of the conical surface presents a smooth surface useful for limiting the overall penetration of the bur. This may be used for crafting grooves or fossae on dental surfaces. In an alternate embodiment the tip portion of the conical bur presents the smooth limiting surface, and the peripheral edges are abrasive, so that this bur is useful for reducing cusps or ridges. The burs are used with the axis of rotation perpendicular to the plane of the tooth. They used alternately by the dental practitioner in the detailed sculpting of dental composite fillings. The shaft portion incorporates finished shapes commonly used for either high speed or low speed bur drive systems.