A treatment chamber or treatment carrier for use in a device for treating a medical or dental instrument. The device comprises a housing, which at least partially surrounds the instrument. The device also comprises at least one conductor made of an electrically conductive material layer applied to the housing for converting electrical energy into thermal energy, and at least two electrical contacts embedded in the conductor for supplying the at least one conductor with electrical energy. A treatment device having such a treatment chamber and/or such a treatment carrier is also described.