In endodontic procedures, pulp mummification is a technique aimed at preserving the remaining pulp tissue by devitalizing it without complete removal. Among the agents listed, Formocresol has been traditionally used for this purpose.

- Formocresol is a mixture of formaldehyde, cresol, glycerin, and water. It acts primarily as a fixative and antimicrobial agent, causing fixation of the pulp tissue, which results in mummification rather than complete necrosis.
- This property makes it especially useful in pulpotomy procedures in primary teeth, where the goal is to maintain the tooth for a longer period without causing extensive damage to the surrounding tissues.
- Other agents listed such as Glutaraldehyde are also used for fixation but are not as widely traditional as Formocresol for pulp mummification.
- Calcium hydroxide is predominantly used for its bactericidal properties and ability to stimulate hard tissue formation, but it does not mummify the pulp.
- Eugenol acts mainly as a sedative and analgesic agent and does not result in pulp fixation or mummification.

Thus, Formocresol remains the classic and traditional agent for achieving pulp mummification in endodontic therapy.

Reference: Grossman’s Endodontic Practice, 13th Edition, Chapter 12: Pulpotomy and Pulp Preservation, Page 251-253