If a palatal root is displaced into the antrum during extraction, how should it be retrieved?

When a palatal root is displaced into the antrum during extraction, the preferred method for retrieval is through a surgical opening of the canine fossa. This approach allows for direct access to the maxillary sinus (antrum) where the root fragment may be residing.

Creating a surgical opening through the canine fossa provides several advantages. It allows the dentist to visualize the area better and directly remove the root fragment without further complicating the situation. Additionally, this method helps in ensuring that no other structures are damaged during the retrieval process, as the area is approached with precision.

Other retrieval methods, such as accessing through the alveolar bone or performing a nasal antrostomy, may not provide the same direct access and could pose additional risks or complications. Hence, the surgical opening through the canine fossa is the most effective and safe choice for this specific situation.