What material is commonly used in dentistry as a temporary cement or temporary filling material?

What material is commonly used in dentistry as a temporary cement or temporary filling material?

• A. Zinc oxide eugenol (ZOE)
• B. Glass ionomer cement
• C. Zinc phosphate cement
• D. Polycarboxylate cement

Answer: (A)

Temporary cement or filling material should protect the pulp briefly, seal the restoration, and be easy to remove when a definitive restoration is ready. Zinc oxide eugenol does this well because the eugenol component provides a soothing effect to the pulp, and the material is relatively soft and easy to remove from margins. Its lower strength and lack of strong bonding make it ideal for short-term use, so you can reseat or replace it without damaging tooth structure. Other cements have drawbacks for temporary use: glass ionomer bonds to tooth and releases fluoride, which is great long-term, but it’s stiffer and harder to remove cleanly for a new restoration. Zinc phosphate cement is acidic during setting and can irritate the pulp, with poor seal and no bonding to dentin. Polycarboxylate cement is more forgiving than zinc phosphate but doesn’t offer the same pulp-soothing benefit, making it less ideal for a true temporary scenario.

Temporary cement or filling material should protect the pulp briefly, seal the restoration, and be easy to remove when a definitive restoration is ready. Zinc oxide eugenol does this well because the eugenol component provides a soothing effect to the pulp, and the material is relatively soft and easy to remove from margins. Its lower strength and lack of strong bonding make it ideal for short-term use, so you can reseat or replace it without damaging tooth structure.

Other cements have drawbacks for temporary use: glass ionomer bonds to tooth and releases fluoride, which is great long-term, but it’s stiffer and harder to remove cleanly for a new restoration. Zinc phosphate cement is acidic during setting and can irritate the pulp, with poor seal and no bonding to dentin. Polycarboxylate cement is more forgiving than zinc phosphate but doesn’t offer the same pulp-soothing benefit, making it less ideal for a true temporary scenario.