To provide a dental abutment having an embedded part embedded into an embedding hole of a block and fixed in the embedding hole. A learning sample is used in order at least to derive andor initialize a target action to be carried out and to lead the user from an optional current status to an optional desired target status as the final status. The coordinates are applied to an address conversion calculation unit for calculating a linear memory address corresponding to the pixel coordinates and the data representative of the pixel is stored in the system memory at the calculated address. On receiving approval for each project, the planned series of releases and the initial estimate of cost and duration are reviewed and capacity is reserved in a release having available capacity. An internal structure positioned within the barrel couples with the base plate to provide support to the pole. A spring is sandwiched between the pusher member and the pin keeper.