Final answer:
Leaving a space between the crown and the model on the abutment side is important for proper fit, stability, and preventing damage to the abutment.
Step-by-step explanation:
When fabricating a temporary crown, it is important to leave a space between the crown and the model on the abutment side to ensure proper fit and function. This space allows for the placement of cement or adhesive between the crown and the abutment, creating a stable bond. Additionally, the space can help prevent damage to the abutment by providing clearance for any potential movements during chewing or speaking.