How soon should a definitive restoration be placed after obturation to minimize failure risk?

• A. As soon as possible, typically within weeks, to prevent coronal leakage
• B. After several months
• C. Only if symptoms persist
• D. Never; leave as is

Answer: (A)

After obturation, securing a solid coronal seal is essential. The root canal system is sealed at the apex by the obturation, but a compromised coronal seal allows bacteria and saliva to reach the filled canal. Placing the definitive restoration promptly, typically within weeks, minimizes the window for coronal leakage, reducing the risk of reinfection, microleakage, and restoration voids. Temporary restorations can degrade or fail, so waiting longer increases failure risk. Delaying for months or relying on symptoms to guide timing is not safe, and leaving the tooth unsealed defeats the purpose of the obturation.