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When fabricating a temporary crown, why is it necessary to have a space between the crown and the model on the abutment side?
To improve aesthetics
To provide space for cement
To enhance the crown's fit
To facilitate airflow
The correct answer is: To provide space for cement
Having a space between the temporary crown and the model on the abutment side is essential to provide space for cement. This space allows for an appropriate amount of dental cement to be placed between the temporary crown and the prepared tooth. The cement acts as an adhesive that secures the temporary crown in place while also allowing for a certain degree of adjustment during placement. Proper spacing is crucial, as it ensures that the cement can fill any voids and create a reliable bond while not being overly thick, which could affect the fit or comfort of the crown. In the context of providing an effective temporary crown, this concept is vital. If there were no space, the cement could be too thick, leading to improper seating of the crown or discomfort for the patient. Moreover, the crown might not seat correctly, leading to issues with occlusion or the temporary's functionality.