Process for the preparation of an article by powder injection molding

A process for preparing a dental implant or a dental implant abutment by powder injection molding, the process comprising:

• a) providing a feedstock containing a powder of a ceramic, a metal or a metal alloy dispersed in a binder, b) heating the feedstock, and c) injecting the heated feedstock into a mold cavity of a mold, where the heated feedstock cools and hardens to a configuration of the mold cavity, wherein:
• the heating of the feedstock according to step b) is at least partially carried out in a barrel, from which the heated feedstock is transferred through a transfer channel to the mold cavity of the mold, the barrel and the transfer channel being vibrated at a frequency corresponding to a resonant frequency of the barrel and the transfer channel by receiving vibrational energy transmitted to the barrel and the transfer channel by a transducer, step c) is carried out under an application of vibrational energy onto the feedstock, and the mold is subjected to vibration at a frequency corresponding to a resonant frequency of the mold, wherein the mold comprises a first mold part and a second mold part, which are retained in contact with each other by means of a clamping unit under an effect of a clamping force in a range of from 125 kN to 500 kN to form a parting line in the form of a parting surface, and points of application of the clamping force in the first mold part and the second mold part, respectively, lie at a distance from the parting surface in a range of 5 mm to 20 mm.