Which obturation technique is associated with better adaptation in irregular canal anatomy?

• A. Lateral condensation
• B. Warm vertical compaction
• C. Single cone
• D. Cold lateral condensation

Answer: (B)

The main idea is how the obturation material can adapt to irregular canal walls. Warm vertical compaction thermoplasticizes gutta-percha, allowing it to flow into fins, isthmuses, lateral canals, and other irregularities, then be compacted to create a dense, continuous fill. This flow and compaction produce better adaptation and fewer voids in complex canal anatomy compared with cold techniques or a single-cone approach, which are less able to conform to irregular shapes. So, the technique that best matches irregular canal anatomy is warm vertical compaction.