Zygomatic Arch
Pronunciation: zy-go-MAT-ik arch
The bony arch formed by the zygomatic process of the temporal bone and the temporal process of the zygomatic bone, visible as a prominent landmark on panoramic and skull radiographs.
Full Definition
The zygomatic arch is a paired craniofacial bony structure that forms a bridge on either side of the skull and serves as an important anatomical landmark in dental and maxillofacial radiology. On panoramic radiographs, it appears as a superimposed radiopaque band in the posterior maxillary region and can obscure adjacent structures if incorrectly identified. Editors working on dental radiology reports must ensure the structure is referred to consistently by its correct anatomical name and not confused with related processes. Radiographic reports involving implant planning or trauma assessment frequently reference the zygomatic arch for spatial orientation. The adjectival form 'zygomatic' should be retained consistently and not abbreviated to 'zygoma' unless referring specifically to the zygomatic bone.
Usage
Usage note: 'Zygomatic arch' and 'zygomatic bone' are not interchangeable; verify which structure is being referenced before editing.
In Context
- "The zygomatic arch was clearly visualised bilaterally on the panoramic radiograph, confirming adequate coverage of the posterior maxilla." — Panoramic radiology report
- "Editors should note that 'zygomatic arch' and 'zygomatic bone' refer to distinct structures and must not be used interchangeably." — Editorial style guide