What is the general prognosis for a tooth with a well-treated endodontic infection after proper restoration?

• A. Favorable prognosis if tooth is structurally sound and well sealed coronally; high healing rates
• B. Poor prognosis even with proper restoration
• C. Favorable only if tooth is non-restored
• D. Depends on patient age only

Answer: (A)

The main idea is that the long-term outcome after an endodontic infection depends on keeping the tooth hermetically sealed and structurally sound. When the tooth has been properly treated and restored with a solid tooth structure and a complete coronal seal, the infection has already been removed and the restored crown prevents new bacterial intrusion and microleakage, leading to high healing rates and a favorable prognosis. If the restoration leaks or the tooth is structurally compromised, bacteria can re-enter and stress or fracture can occur, lowering the chances of lasting success. Age by itself isn’t the deciding factor; the integrity of the restoration and the tooth’s physical strength are key determinants of outcome.