Which of the following is NOT a criterion for provisional coverage?

The choice indicating that coverage extends below the prep margin is not a criterion for provisional coverage because provisional restorations are designed to temporarily cover the prepared tooth while allowing for tissue healing and the placement of a permanent restoration. Effective provisional coverage should ideally be positioned at or slightly below the margin of the preparation to prevent any potential irritation to the gingiva and to maintain the integrity of the margin, ensuring that it is not too deep into the gum tissue.

The other criteria are essential for ensuring that provisional coverage serves its purpose effectively. Aesthetically pleasing results help in maintaining the patient’s confidence and comfort during the interim period; a smooth and snug cervical margin enhances fit and reduces the risk of irritation or plaque accumulation, promoting better oral hygiene; and stability and comfort are crucial to ensure that the patient can function normally while wearing the provisional. These aspects contribute significantly to the overall success of the restorative procedure and the patient's experience.