El nervio infraorbitario es un nervio del rostro. Es la rama terminal de la división maxilar (V2) del nervio trigémino. Proporciona sensibilidad a las estructuras de la parte media del rostro: párpado inferior, lateral de la nariz, mejilla, labio superior, seno maxilar y dientes superiores. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Trayecto El nervio infraorbitario se origina en la división maxilar del nervio trigémino dentro de la fosa pterigopalatina. Sale de la fosa pterigopalatina para entrar en la órbita ósea a través de la fisura orbitaria inferior. El nervio infraorbitario discurre entonces a lo largo de un surco en el suelo de la órbita (surco orbitario inferior). Aquí da origen a dos ramas sensitivas: los nervios alveolares medio superior y anterior superior. El nervio sale de la órbita a través del canal orbitario inferior y emerge en el rostro a través del agujero infraorbitario. Luego, termina dividiéndose en varias ramas sensitivas que se dirigen a la piel: Ramas palpebrales. Ramas nasales. Ramas labiales superiores. By TeachMeSeries Ltd (2026) Fig. 1: trayecto y ramas del nervio infraorbitario. Funciones sensitivas El nervio infraorbitario proporciona inervación sensitiva a las estructuras de la parte media del rostro a través de sus ramas: Nervios alveolares medio superior y anterior superior: seno maxilar, dientes superiores y encías. Ramas palpebrales: piel y conjuntiva del párpado inferior. Ramas nasales: superficie lateral de la nariz externa y tabique nasal. Ramas labiales superiores: labio superior, mucosa oral del labio superior, piel de la cara anterior de la mejilla. Frequent questions What is the infraorbital nerve? The infraorbital nerve is a branch of the maxillary division (V2) of the trigeminal nerve, responsible for sensory innervation to the mid-facial region. It supplies sensation to the lower eyelid, side of the nose, cheek, upper lip, maxillary sinus, and upper teeth. What structures does the infraorbital nerve innervate? The infraorbital nerve provides sensory innervation to key facial structures, including the lower eyelid, lateral nose, cheek, upper lip, and the maxillary sinus. Additionally, it supplies the upper teeth and gums through its branches. How does the infraorbital nerve exit the skull? The infraorbital nerve exits the skull by traversing the inferior orbital fissure into the bony orbit, then it passes through the infraorbital canal before emerging at the infraorbital foramen on the face. This pathway allows it to reach its target areas effectively. What are the branches of the infraorbital nerve? The infraorbital nerve gives rise to several branches, including the middle superior alveolar and anterior superior alveolar nerves, as well as palpebral, nasal, and labial branches. These branches provide sensory innervation to various facial regions. What clinical significance does the infraorbital nerve have? The infraorbital nerve is clinically significant as it can be involved in dental procedures, facial injuries, or nerve entrapments, leading to altered sensation in the mid-face. Understanding its pathway and innervation is crucial for effective diagnosis and treatment in facial pain or numbness. Rate This Article