The curved structure formed by the teeth in either the upper or lower jaw is a fundamental component of the oral cavity. This anatomical feature provides the bony support for the dentition and dictates the overall shape of the arrangement of teeth. For example, the maxillary formation, located in the upper jaw, is often larger and more rounded than its mandibular counterpart, situated in the lower jaw.
The integrity of this structure is essential for proper mastication, speech articulation, and facial aesthetics. Its form significantly influences the way teeth occlude, affecting the efficiency of chewing and the distribution of occlusal forces. Historically, the study of this feature has been crucial in orthodontics, prosthodontics, and oral surgery for planning treatments and restoring oral function and appearance.