How far below the gingival margin should a seated band extend in dental practice?

The seated band in dental practice should extend approximately 1 mm below the gingival margin. This distance is significant because it helps to ensure that the band adequately holds the dental material in place without overextension that could cause irritation or damage to the surrounding gum tissue. A 1 mm extension allows for effective isolation of the tooth and provides a proper seal for the restorative material, minimizing the risk of contamination during procedures such as filling or crown placement.

Extending too far below the gingival margin could lead to potential complications, such as the risk of causing gum recession or discomfort to the patient. Additionally, maintaining an appropriate distance reinforces the integrity of the band, preventing it from becoming dislodged during the procedure, which is critical for achieving a successful restoration.