How is the clamp ensured to avoid resting on any tissues when seated?

The correct approach is to ensure that the clamp is seated slightly below the cementoenamel junction (CEJ). This positioning is crucial for preventing the clamp from putting pressure on the soft tissues, such as the gums, which could cause discomfort, trauma, or tissue damage during dental procedures.

By placing the clamp just below the CEJ, it allows for enough space to avoid contact with the sensitive gingival tissues while still providing a stable and effective grip on the tooth. This ensures that the clamp can hold the dental dam securely without interfering with the surrounding tissues, facilitating a more comfortable experience for the patient and a more effective working area for the dental professional.

In contrast, positioning the clamp above the CEJ does not provide the necessary clearance for the tissues, which can lead to inadvertent trauma. Keeping the clamp near the height of contour may also risk contact with the gums, while allowing all points to rest firmly on tissues contradicts the fundamental goal of preserving tissue health. Hence, the choice to position the clamp slightly below the CEJ is essential for both safety and efficacy in dental procedures.