Direct pulp cap with calcium hydroxide is recommended for which scenario?

Direct pulp cap with calcium hydroxide is recommended for which scenario?

• A. A tooth with irreversible pulpitis
• B. A mature tooth with deep caries
• C. A newly erupted permanent tooth with pulp exposure
• D. A primary tooth with staining

Answer: (C)

Direct pulp cap with calcium hydroxide is best when the pulp is healthy or only reversibly inflamed after a small exposure in a young patient with an immature tooth. In newly erupted permanent teeth the root is still forming and the apex is open, so preserving vitality is crucial to allow continued root development (apexogenesis). Calcium hydroxide supports this by creating an environment that encourages reparative dentin formation and a dentin bridge over the exposure, helping seal the pulp and protect it from bacteria while the tooth matures. In contrast, irreversible pulpitis means the pulp is diseased and inflamed beyond healing by a cap, so a pulp-capping approach would not reliably save vitality. In a mature tooth with deep caries that exposes the pulp, the pulp is less likely to respond favorably to a direct pulp cap, and more definitive pulp therapy (such as pulpotomy or pulpectomy) or extraction may be indicated. For a primary tooth with staining, the physiological differences and resorption patterns make direct pulp capping less predictable, so other treatments are typically preferred.

Direct pulp cap with calcium hydroxide is best when the pulp is healthy or only reversibly inflamed after a small exposure in a young patient with an immature tooth. In newly erupted permanent teeth the root is still forming and the apex is open, so preserving vitality is crucial to allow continued root development (apexogenesis). Calcium hydroxide supports this by creating an environment that encourages reparative dentin formation and a dentin bridge over the exposure, helping seal the pulp and protect it from bacteria while the tooth matures.

In contrast, irreversible pulpitis means the pulp is diseased and inflamed beyond healing by a cap, so a pulp-capping approach would not reliably save vitality. In a mature tooth with deep caries that exposes the pulp, the pulp is less likely to respond favorably to a direct pulp cap, and more definitive pulp therapy (such as pulpotomy or pulpectomy) or extraction may be indicated. For a primary tooth with staining, the physiological differences and resorption patterns make direct pulp capping less predictable, so other treatments are typically preferred.