- The primary function of mummifying agents in dental procedures is to chemically fix and preserve gingival tissue.
- These agents are applied when there is a need to control bleeding and maintain the integrity of the tissue, especially during procedures such as gingivectomy or crown lengthening.

- Mummifying agents work by coagulating proteins within the soft tissue, effectively "fixing" the tissue in place and preventing further bleeding.
- This is essential to provide a clear operative field and reduce postoperative complications related to excessive bleeding.
- Unlike local anesthetics or vasoconstrictors, their role is not to numb the area or constrict blood vessels but to stabilize and preserve the tissue through chemical fixation.

Therefore, the correct answer is: To chemically fix and preserve gingival tissue.

Reference: Orban's Oral Histology, 14th Edition, Chapter 6: Histology of the Oral Mucosa, Page 183