Fig. 2From: Classification of postoperative edema based on the anatomic division with mandibular third molar extractionExamples of edema in the postoperative spaces on magnetic resonance imaging. a Buccinator muscle (arrow). b Supra-periosteum space (edema space observed along the outer border of the mandible, arrow). c Buccal space (arrow). d Parapharyngeal space (arrow). e Lingual space (edema space on sublingual or submandibular space, arrows)Back to article page