What distinguishes submarginal incisions from other types?

Submarginal incisions are characterized by their flexibility in design; they can be made as internal or external bevel incisions. This feature allows for versatility in surgical approach depending on the specific clinical situation, such as the type of periodontal procedure being performed. The ability to create these bevels helps to manage tissue preservation and healing effectively.

In contrast, some of the other options presented do not accurately describe submarginal incisions. While it is true that some incisions might be positioned above the gingival margin, this is not a defining characteristic of submarginal incisions specifically. The use of general anesthesia is not a prerequisite for all submarginal incisions, as the type of anesthesia used generally depends on the complexity of the procedure and patient factors rather than the specific incision type. Lastly, submarginal incisions are not exclusive to cosmetic procedures; they are routinely used in various periodontal surgeries, making the statement regarding their exclusivity inaccurate.