Method for wireless transmission of data in a medical or dental system (50, 70, 100) comprising a foot control and a plurality of medical or dental devices (2, 2A-2N; 6, 6A-6N) for treatment and/or diagnosis, wherein at least two of the plurality of devices (2, 2A-2N; 6, 6A-6N) are selectively wirelessly controllable by the foot control, and wherein each device (2, 2A-2N; 6, 6A-6N) controllable by the foot control is assigned a specific identification code, the method being characterized in that a control logic provided in the foot control selects, on the basis of data packets (4, 4A-4N; 5, 5A-5N), that device (2, 2A-2N; 6, 6A-6N) which can be actuated by the foot control and to which subsequently operating data for operating device (2, 2A-2N; 6, 6A-6N), in particular control data for treatment and/or diagnosis, are transmitted wirelessly, wherein each device (2, 2A-2N; 6, 6A-6N) which can be actuated by the foot control is assigned its own data packet (4, 4A-4N; 5, 5A-5N) and wherein each of these data packets (4, 4A-4N; 5, 5A-5N) comprises the specific identification code of the device (2, 2A-2N; 6, 6A-6N) controllable by the foot control to which the data packet (4, 4A-4N; 5, 5A-5N) is assigned to, and an individual rank, assigned to this device (2, 2A-2N; 6, 6A-6N), of a ranking of the devices (2, 2A-2N; 6, 6A-6N) controllable by the foot control, wherein the foot control selects only that device (2, 2A-2N; 6, 6A-6N) for the wireless transmission of operating data for treatment and/or diagnosis and establishes a wireless communication link for the transmission of operating data for treatment and/or diagnosis only to that device (2, 2A-2N; 6, 6A-6N) from which the foot control has received an identification code and which has a prioritised individual rank in the ranking compared to the other devices (2, 2A-2N; 6, 6A-6N) from which the foot control has received an identification code. a control logic provided in the foot control selects, on the basis of data packets (4, 4A-4N; 5, 5A-5N), that device (2, 2A-2N; 6, 6A-6N) which can be actuated by the foot control and to which subsequently operating data for operating device (2, 2A-2N; 6, 6A-6N), in particular control data for treatment and/or diagnosis, are transmitted wirelessly, wherein each device (2, 2A-2N; 6, 6A-6N) which can be actuated by the foot control is assigned its own data packet (4, 4A-4N; 5, 5A-5N) and wherein each of these data packets (4, 4A-4N; 5, 5A-5N) comprises the specific identification code of the device (2, 2A-2N; 6, 6A-6N) controllable by the foot control to which the data packet (4, 4A-4N; 5, 5A-5N) is assigned to, and an individual rank, assigned to this device (2, 2A-2N; 6, 6A-6N), of a ranking of the devices (2, 2A-2N; 6, 6A-6N) controllable by the foot control, wherein the foot control selects only that device (2, 2A-2N; 6, 6A-6N) for the wireless transmission of operating data for treatment and/or diagnosis and establishes a wireless communication link for the transmission of operating data for treatment and/or diagnosis only to that device (2, 2A-2N; 6, 6A-6N) from which the foot control has received an identification code and which has a prioritised individual rank in the ranking compared to the other devices (2, 2A-2N; 6, 6A-6N) from which the foot control has received an identification code.