it is a method of determining the moisture in a dentalofen envisaged, which dentalofen a combustion chamber surrounding heating element is surrounded by a w u00e4rmed u00e4mmk u00f6rper, with a temperature sensor, the temperature and / or pressure in the combustion chamber and / or the dentalo fen and / or the coat of measures and, in particular, in or on the w u00e4rmed u00e4mmk u00f6rper is stored.the dentalofen has a device to control at least the aufheizvorgangs of dentalofens, whereby the combustion chamber with a sleeve, in particular a unterdruckquelle is attached.the heating of the enclosed combustion chamber on a - _ depunkt of water through the heat of evaporation, or by a konvektionsstrom dentalofen and moisture resulting in the delay of temperature increase or decrease of the temperature of the wheel device for the temperature sensor for the control of the dentalofens collected and used.