A syringe tip for attachment to a dental syringe, the syringe tip comprising: a first outer core comprising an elongate member having a proximal end and a distal end, the first outer core having a first proximal aperture at the proximal end of the first outer core, a first distal aperture at the distal end of the first outer core, and a first passage connecting the first proximal aperture with the first distal aperture and defining a first interior surface of the first outer core; and a first inner core comprising an elongate member having a proximal end and a distal end, the first inner core having a first proximal aperture at the proximal end of the first inner core, a first distal aperture at the distal end of the first inner core, and a first passage connecting the first proximal aperture and the first distal aperture; wherein the first inner core is configured to be received and retained within the passage of the first outer core, and wherein the first passage of the first outer core separates into multiple sub-passages (1406A, 1408A); wherein the first outer core further comprises a retention feature proximate the proximal end or the distal end of the first outer core, and the first inner core comprises a corresponding retention feature configured to engage with at least a part of the first outer core's retention feature; wherein at least one of the first outer core and the first inner core has a connector in fluid communication with the first passage of the at least one of the first outer core and the first inner core, said connector allowing mixing of fluids or other materials entering through the connector to mix with other fluids passing through the first passage, wherein the connector is positioned at a location other than the proximal or distal ends of the at least one of the first outer core and the first inner core. a first outer core comprising an elongate member having a proximal end and a distal end, the first outer core having a first proximal aperture at the proximal end of the first outer core, a first distal aperture at the distal end of the first outer core, and a first passage connecting the first proximal aperture with the first distal aperture and defining a first interior surface of the first outer core; and a first inner core comprising an elongate member having a proximal end and a distal end, the first inner core having a first proximal aperture at the proximal end of the first inner core, a first distal aperture at the distal end of the first inner core, and a first passage connecting the first proximal aperture and the first distal aperture; wherein the first inner core is configured to be received and retained within the passage of the first outer core, and wherein the first passage of the first outer core separates into multiple sub-passages (1406A, 1408A); wherein the first outer core further comprises a retention feature proximate the proximal end or the distal end of the first outer core, and the first inner core comprises a corresponding retention feature configured to engage with at least a part of the first outer core's retention feature; wherein at least one of the first outer core and the first inner core has a connector in fluid communication with the first passage of the at least one of the first outer core and the first inner core, said connector allowing mixing of fluids or other materials entering through the connector to mix with other fluids passing through the first passage, wherein the connector is positioned at a location other than the proximal or distal ends of the at least one of the first outer core and the first inner core.