What is a potential complication of an extraction that may require referral to an oral surgeon?

A subperiosteal abscess is a potential complication that can arise following a dental extraction. This condition occurs when infection develops beneath the periosteum, which is the layer of tissue covering the bones. It represents a significant issue because it can cause not only localized pain and swelling but also systemic effects if the infection spreads.

If a dentist suspects the presence of a subperiosteal abscess after an extraction, referral to an oral surgeon is often warranted. An oral surgeon has the expertise to manage such complications effectively, which may include performing procedures to drain the abscess or address any underlying issues that could have led to infection.

While persistent bleeding is also a concerning complication, it is typically managed within the dental office setting. Allergic reactions, while serious, are usually immediate and manageable in clinical settings. Difficulty in swallowing may occur for various reasons but does not directly link to a specific complication arising from an extraction like a subperiosteal abscess does. Therefore, the association of the abscess with potential serious complications and the need for surgical intervention makes it the correct answer in this context.