An interdental brush comprising - a body having a handle and a guide duct; - a connection element that is disposed in the guide duct and connects a cleaning body to an operating element; wherein the connection element with the cleaning body is displaceable by means of the operating element in a reciprocating manner between a retracted position in which the cleaning body is disposed within the guide duct, and a deployed position in which the cleaning body at an end of the guide duct that is distal in relation to the handle protrudes from the guide duct; wherein a flexible positioning element is provided at the distal end of the guide duct, wherein the positioning element runs toward the distal end in a substantially funnel-shaped manner; wherein the positioning element at an approximal space between two teeth is engageable in such a manner that the cleaning body during the displacement to the deployed position ingresses into the approximal space, wherein the reciprocating displacement of the cleaning body is capable of being caused by a movement of the operating element relative to the positioning element of the interdental brush, wherein the connection element is interchangeable with the cleaning body, characterized in that the connection element is fastenable to the operating element by means of a clip connection, wherein the connection element comprises a coupling element in the form of a transverse pin through the connection element, and wherein the operating element comprises a receptacle for the coupling element. - a body having a handle and a guide duct; - a connection element that is disposed in the guide duct and connects a cleaning body to an operating element; wherein the connection element with the cleaning body is displaceable by means of the operating element in a reciprocating manner between a retracted position in which the cleaning body is disposed within the guide duct, and a deployed position in which the cleaning body at an end of the guide duct that is distal in relation to the handle protrudes from the guide duct; wherein a flexible positioning element is provided at the distal end of the guide duct, wherein the positioning element runs toward the distal end in a substantially funnel-shaped manner; wherein the positioning element at an approximal space between two teeth is engageable in such a manner that the cleaning body during the displacement to the deployed position ingresses into the approximal space, wherein the reciprocating displacement of the cleaning body is capable of being caused by a movement of the operating element relative to the positioning element of the interdental brush, wherein the connection element is interchangeable with the cleaning body, characterized in that the connection element is fastenable to the operating element by means of a clip connection, wherein the connection element comprises a coupling element in the form of a transverse pin through the connection element, and wherein the operating element comprises a receptacle for the coupling element. wherein the connection element with the cleaning body is displaceable by means of the operating element in a reciprocating manner between a retracted position in which the cleaning body is disposed within the guide duct, and a deployed position in which the cleaning body at an end of the guide duct that is distal in relation to the handle protrudes from the guide duct; wherein a flexible positioning element is provided at the distal end of the guide duct, wherein the positioning element runs toward the distal end in a substantially funnel-shaped manner; wherein the positioning element at an approximal space between two teeth is engageable in such a manner that the cleaning body during the displacement to the deployed position ingresses into the approximal space, wherein the reciprocating displacement of the cleaning body is capable of being caused by a movement of the operating element relative to the positioning element of the interdental brush, wherein the connection element is interchangeable with the cleaning body, characterized in that the connection element is fastenable to the operating element by means of a clip connection, wherein the connection element comprises a coupling element in the form of a transverse pin through the connection element, and wherein the operating element comprises a receptacle for the coupling element.