What is the depth of a submarginal incision based on transgingival probing?

The depth of a submarginal incision, which is considered an important technique during periodontal surgery, is typically recommended to be 1/2 to 2/3 of the probing depth. This range is optimal as it allows for sufficient access to the underlying tissues while keeping the incision within a safe zone that preserves the tissue and promotes healing.

By limiting the depth to this range, it ensures that the incision does not compromise the integrity of the remaining periodontal attachment, which is crucial for the health and recovery of the area post-surgery. This depth also allows for effective access for instrumentation, enabling clinicians to perform necessary periodontal treatments while minimizing trauma to the surrounding healthy tissues.

The other options suggest incisions that are either too shallow or too deep, which could lead to inadequate access or excessive tissue trauma, disregarding the delicate balance needed in periodontal surgeries.