Buccinator Muscles, Gross Anatomy

Description

Positioned within the cheek, the buccinator muscle forms a muscular wall deep to the masseter and superficial to the oral mucosa, spanning from the maxillary and mandibular alveolar processes and the pterygomandibular raphe toward the modiolus at the corner of the mouth. A lateral profile of a male skull frames its attachments, with the maxilla and mandible in articulation, intact dentition, and cranial sutures providing bony landmarks. Posteriorly, the buccinator lies anterior to the ramus of the mandible and blends with fibers of orbicularis oris near the oral commissure. The masseter is presented as the dominant superficial jaw elevator. Understanding the buccinator in relation to the mandible, teeth, and masseter matters when teaching mastication and bolus control, because this muscle is the primary cheek compressor that keeps food positioned on the occlusal surfaces rather than pooling in the vestibule. Clinically, the course of Stensen’s (parotid) duct as it pierces the buccinator opposite the maxillary second molar is a common exam point and a practical landmark during intraoral procedures and laceration repair. A tight, lateral view also supports discussion of buccal nerve sensory supply to the mucosa versus buccal branches of the facial nerve providing motor innervation to buccinator. Simple relationships, big consequences. Use this illustration in head and neck anatomy lectures, dental and oral surgery teaching files, or textbook spreads covering the muscles of facial expression versus muscles of mastication, with the skull as a clear reference for origins, insertions, and lines of pull. It also fits patient education materials for parotid duct pathology, cheek trauma, and postoperative swelling patterns after third molar work. Anatomical accuracy verified by SciePro's Medical Advisory Board.