The dental arch refers to the curved structure formed by the arrangement of teeth in the upper and lower jaws. Each arch consists of a series of teeth, including incisors, canines, premolars, and molars, which work together for biting, chewing, and speaking. The upper dental arch is known as the maxillary arch, while the lower is called the mandibular arch. The shape and alignment of the dental arch can significantly impact oral health and function. Proper alignment is essential for effective chewing and can influence the overall appearance of a person's smile. Orthodontic treatments, such as braces, are often used to correct misalignments in the dental arch.