A milling adaptor for affixing an abutment blank for the manufacture of a dental abutment in a housing of a milling unit. The milling adapter includes a holding device extending from a first end to a second end. The holding device includes a flange positioned at the first end and a securing shaft extending from the flange to the second end. The securing shaft includes at least one securing surface for securing the holding device to the housing.

A milling adaptor for affixing an abutment blank for the manufacture of a dental abutment in a housing of a milling unit. The milling adapter includes a holding device extending from a first end to a second end. The holding device includes a flange positioned at the first end and a securing shaft extending from the flange to the second end. The securing shaft includes at least one securing surface for securing the holding device to the housing.

A bit-removal assembly includes a first ring coupled to an output shaft for co-rotation therewith, a second ring supported on the lower retaining ring of the output shaft, a frusto-conical surface on at least one of the first or second rings, and a wedge positioned between the first and second rings and engaging with the frusto-conical surface. A collar defines a cam surface located radially outward of the wedge. The collar is movable between a locked position, in which the cam surface is engaged with the wedge to displace the wedge radially inward on the frusto-conical surface to separate the second ring from the first ring, and a released position, in which the cam surface is misaligned with the wedge to permit the wedge to move radially outward on the frusto-conical surface. A biasing member urges the collar towards the locked position.

A bit-removal assembly includes a first ring coupled to an output shaft for co-rotation therewith, a second ring supported on the lower retaining ring of the output shaft, a frusto-conical surface on at least one of the first or second rings, and a wedge positioned between the first and second rings and engaging with the frusto-conical surface. A collar defines a cam surface located radially outward of the wedge. The collar is movable between a locked position, in which the cam surface is engaged with the wedge to displace the wedge radially inward on the frusto-conical surface to separate the second ring from the first ring, and a released position, in which the cam surface is misaligned with the wedge to permit the wedge to move radially outward on the frusto-conical surface. A biasing member urges the collar towards the locked position.