A holder (1) for a tooth model (2) for the purpose of scanning the tooth model (2), includes a work holding component (3) to accommodate the tooth model (2) and a shaft (4) connected to the work holding component (3) for attachment thereof to a mount (8, 15) of a scanning system, the shaft including a coupling component which comprises a cone (6). A mounting device for the holder (1) includes a mandrel (8, 15) is in the form of a counter cone (10, 17).