The invention relates to an oral cleaning system for cleaning teeth with a combination of brushing and interdental liquid cleaning. The oral cleaning system comprises a cleaning head with a hydraulic driven brush for brushing the teeth and an orifice for emitting fluid for interdental liquid cleaning. The oral cleaning system comprises further a support unit with a fluid reservoir for containing a fluid and a pump mechanism configured for pumping the fluid from the fluid reservoir through a first fluid channel to the cleaning head. The brush of the cleaning head is configured to be driven by a hydraulic motor empowered by the fluid, and a valve of the cleaning head is configured to emit at least a part of the fluid through the orifice for interdental liquid cleaning. The cleaning heads further comprises a second fluid channel configured for transporting at least a part of the fluid back from the hydraulic motor to the fluid reservoir of the support unit.
