Method for calibrating a temperature measuring device of a dental oven and calibration element

Method for calibrating a temperature measuring device of a dental oven by means of at least one calibration element, comprising the steps of:

• heating, during a heating time interval (dt), the at least one calibration element in the dental oven from a starting temperature (TA) to an end temperature (TE),
• measuring, during the heating time interval (dt), the temperature in the dental oven by means of the temperature measuring device as the actual temperature (T),
• wherein
• the at least one calibration element has at least one measurement material,
• the measurement material has a reversible phase transition occurring at a first transition temperature (TC1),
• the first transition temperature (TC1) is higher than the starting temperature (TA) and lower than the end temperature (TE),
• the phase transition causes an abrupt change in at least one first parameter (I) of the dental oven,
• the first parameter (I) of the dental oven is measured over the heating time interval (dt) and at least one first abrupt change (dI1) of the first parameter (I) is identified during the heating time interval (dt),
• wherein a deviation of the first actual temperature value (T1), which is measured by the temperature measuring device when the first abrupt change (dI1) of the first parameter (I) occurs, from the first transition temperature (TC1) is determined, and the actual temperature (T) of the temperature measuring device is corrected in accordance with the deviation.