Rinsing glass filling arrangement for filling a rinsing glass provided on a dental treatment station, having a setting-down element having a setting-down surface for the rinsing glass , means for supplying a liquid to the rinsing glass , said means having a supply pipe , and means for detecting the fill level of the rinsing glass , wherein the means for detecting the fill level of the rinsing glass are designed to detect the fill level using sound, wherein the means for detecting the fill level have a sound generator , a sensor and an evaluation unit , wherein the evaluation unit is designed to determine the fill level of the rinsing glass on the basis of the sound signals detected by the sensor , wherein the means for detecting the fill level furthermore have transmission means that • firstly direct the sound generated by the sound generator onto a region in which the rinsing glass is to be positioned, and • secondly convey reflected sound or sound transmitted by the rinsing glass to the sensor , wherein the transmission means have at least one bore that is designed to convey the sound generated by the sound generator and at least partly follows the supply pipe , wherein the supply pipe for the liquid and the at least one bore used to transmit the sound form an integrally formed structural unit , characterized in that the supply pipe is arranged on the setting-down element for the rinsing glass and has a first part that extends upwards, and a second part that adjoins the upper end of the first part , is curved and ends in a downwardly oriented dispensing opening via which the liquid leaves the supply pipe , wherein the downwardly oriented dispensing opening is located vertically above the rinsing glass when said rinsing glass is positioned as intended on the setting-down surface . a setting-down element having a setting-down surface for the rinsing glass , means for supplying a liquid to the rinsing glass , said means having a supply pipe , and means for detecting the fill level of the rinsing glass , wherein the means for detecting the fill level of the rinsing glass are designed to detect the fill level using sound, wherein the means for detecting the fill level have a sound generator , a sensor and an evaluation unit , wherein the evaluation unit is designed to determine the fill level of the rinsing glass on the basis of the sound signals detected by the sensor , wherein the means for detecting the fill level furthermore have transmission means that • firstly direct the sound generated by the sound generator onto a region in which the rinsing glass is to be positioned, and • secondly convey reflected sound or sound transmitted by the rinsing glass to the sensor , • firstly direct the sound generated by the sound generator onto a region in which the rinsing glass is to be positioned, and • secondly convey reflected sound or sound transmitted by the rinsing glass to the sensor , wherein the transmission means have at least one bore that is designed to convey the sound generated by the sound generator and at least partly follows the supply pipe , wherein the supply pipe for the liquid and the at least one bore used to transmit the sound form an integrally formed structural unit , characterized in that the supply pipe is arranged on the setting-down element for the rinsing glass and has a first part that extends upwards, and a second part that adjoins the upper end of the first part , is curved and ends in a downwardly oriented dispensing opening via which the liquid leaves the supply pipe , wherein the downwardly oriented dispensing opening is located vertically above the rinsing glass when said rinsing glass is positioned as intended on the setting-down surface . <EOS>