The sealed teeth exhibited much more which of the following?

• A. Pulp vitality
• B. Dentin bridging
• C. Enamel thickness
• D. Bacterial colonization

Answer: (B)

Sealing the dentin-pulp interface triggers a protective, reparative response from the pulp. When the surface is sealed, diffusion of irritants and bacteria is reduced, and odontoblasts at the pulp–dentin border are stimulated to lay down new mineralized tissue, forming a dentin bridge that seals the tubules. This dentin bridging is a clear sign of the pulp’s ability to respond to mild irritation with a productive, protective reinforcement, reflecting good material biocompatibility. Enamel thickness isn’t affected by sealing, and while preserving pulp vitality is desirable, the most characteristic and observable reaction to sealing is the formation of reparative dentin. Bacterial colonization would typically decrease with a proper seal, not increase, so that option doesn’t fit as the primary outcome.