What solution is used as a sealer in deciduous teeth that undergo a pulpotomy?

Formocresol is commonly used as a sealer in deciduous teeth that undergo a pulpotomy due to its effective properties in preserving and providing a barrier for the pulp chamber. It is a formaldehyde-based solution that has both antibacterial and tissue-fixing qualities, making it suitable for use in pediatric dentistry. The chemical composition helps in minimizing the risk of infection and sealing the pulp after the procedure, ensuring that the remaining pulp tissue can remain healthy and avoid further complications.

The other options, while relevant in various dental contexts, are not the primary choices for sealing in this specific scenario. Calcium hydroxide, for example, is primarily used as a pulp capping agent due to its ability to encourage dentin regeneration, but it does not serve as a sealer in the same effective manner as formocresol following a pulpotomy. Zinc oxide eugenol has some antibacterial properties and may be used in temporary fillings or as a palliative treatment, but it does not provide the same long-term sealing capabilities needed post-pulpotomy. Mineral trioxide aggregate is a newer material that offers excellent sealing properties and biocompatibility, but it is typically used in more complex situations and can be more expensive than formocresol. Thus