The scan body (100) for a dental impression (120) includes a hollow member (105) having a mounting recess (300) configured for mounting onto a head portion (320) of an impression coping (110) positioned in a dental impression (120). The mounting recess (300) can have an internal threaded bore (305) for receiving a fastener (310a) to secure the scan body (100) onto the impression coping (110). The scan body (100) can have an exterior peripheral wall (115) extending between opposing first and second ends. The peripheral wall (115) has a first flat surface (125a) and a second flat surface (125b). The first flat surface (125a) and the second flat surface (125b) have different dimensions.
