Patent ID: 8465681

Claim:
A method for controlling a furnace for deforming a deformable dental material in a mold wherein the dental material is initially introduced into a preliminary press cavity in the mold, the press cavity being connected to a mold cavity, and monitoring movement parameters of the ram used to press the dental material from the press cavity into the mold cavity, the method comprising: providing a control unit in which a standard parameter of speed of penetration of the press ram and/or injection force of the press ram is stored; applying a force to the press ram to deform the dental material by pressing it through the preliminary press cavity and then into the mold cavity under an influence of heat; measuring a time and/or the force with which the press ram covers a defined path as the force is applied to the press ram to determine either the speed of penetration of the press ram and/or a decrease in the injection force of the press ram, the measuring being done either continuously or recurrently at regular time intervals; using the control unit to compare the speed of penetration and/or injection force with the stored standard press ram speed of penetration parameter and/or the injection force parameter, which comparing is done either continuously or recurrently at regular time intervals; outputting a discontinuation signal via which the movement of the press ram is interrupted in the event that the speed of penetration of the press ram and/or the injection force of the press ram deviates from the stored standard parameter due to a burst in the mold; and determining whether the dental material is usable as a dental restoration part based upon the time at which the mold burst, if a discontinuation signal is output.