Apparatus for the acquisition and visualization of dental radiographic images comprising an X ray emitter device; a radiographic sensor for the acquisition of a dental radiographic image; a processing unit for storing and visualizing the image; and a communication device adapted to transmit the image acquired by the radiographic sensor to the processing unit according to a predetermined radio communication protocol; the communication device comprising a control module, which is adapted to automatically discriminate the radio communication between the sensor and the processing unit from any communication put into effect by the processing unit from and to devices and apparatuses other than the sensor and utilizing the same predetermined communication protocol implemented by the communication device.