Plug connection for jaw stump models

1. Field of the Invention A plug connection for jaw stump models for the releasable connection of tooth crown segments or jaw segments to a model base, which includes a plug pin () which can be connected in snap-lock fashion with a sleeve (). A non-rotationally symmetric design of a rotational locking section (), and a cross pin () arranged perpendicular to the plug pin axis, prevent rotary movement of the plug pin () in the sleeve. Disposed at the end of the plug pin () facing the sleeve is a spring element (), which is provided with a circumferential annular groove () for a snap-locking connection with the sleeve. The spring element () comprises two spring tongues () separated by a continuous longitudinal slot (). The sleeve provided for receiving the plug pin () comprises a projection projecting into the inner chamber for the snap-lock connection of the plug pin () with the sleeve as well as a sleeve opening region matching the rotational locking section () of the plug pin ().