överkäkskroppen

överkäkskroppen refers to the upper jawbone, also known as the maxilla, in human anatomy. It forms the central part of the midface and is a crucial component of the facial skeleton. The maxilla is a paired bone that fuses during development to form a single structure. It houses the upper teeth, forming the upper dental arch.

The structure of the maxilla is complex, with several important processes and surfaces. The body of the maxilla is pyramidal in shape and contains the maxillary sinus, an air-filled cavity that communicates with the nasal cavity. Other significant parts include the alveolar process, which supports the upper teeth; the palatine process, which forms the anterior two-thirds of the hard palate; the zygomatic process, which articulates with the zygomatic bone (cheekbone); the frontal process, which forms part of the nasal cavity and articulates with the frontal bone; and the orbital process, which forms the floor of the orbit (eye socket).

The maxilla plays a vital role in mastication (chewing), respiration, and speech. Its structure contributes significantly to the shape and appearance of the face. Fractures of the maxilla can range from minor to severe, often resulting from trauma. Surgical interventions and dental procedures frequently involve the maxilla due to its role in supporting the teeth and forming the facial structure. Conditions affecting the maxilla can impact breathing, eating, and overall facial aesthetics.