An infection of a maxillary premolar will most commonly be seen in which space/region?

Correct answer: A. Buccal

• A. Correct. The buccal roots of maxillary premolars and their apices lie close to the buccal cortical plate, so infection typically perforates buccally and drains into the buccal vestibule above the muscle attachment.
• B. Incorrect. Palatal drainage is more typical of teeth with a palatal root (e.g., the maxillary first premolar palatal root or molar palatal roots) — not the usual presentation here.
• C. Incorrect. The canine space is associated with the maxillary canine (long root, apex near the canine fossa), not the premolars.
• D. Incorrect. The pharyngeal/parapharyngeal space is associated with posterior mandibular molars, not maxillary premolars.