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Progress in Orthodontics
Fig. 2 | Progress in Orthodontics

Fig. 2

From: Estimating and comparing the duration of adolescent growth peak in skeletal class I and III subjects using cervical vertebral maturation method

Fig. 2

An example of cephalometric tracing, illustrating the CVM stage, ANB angle, and Wits appraisal. The C2, C3, and C4 vertebrae are outlined with red color. The concave inferior border of three vertebrae alongside the horizontal rectangular shape of C3 and C4 demonstrates the CS4 stage. Sella turcica and Nasion are represented by S and N, respectively. Point A displays the deepest point on the maxilla, between the anterior nasal spine and alveolus. Point B displays the deepest point on the curvature of symphysis [23]. Two lines perpendicular to A and B points are drawn, intersecting the occlusal plane (OCC. PL.) at A′ and B′. In this patient, the SNA and SNB angles were measured to be 81° and 79°, respectively. Consequently, the ANB angle was calculated to be 2°, representing a normal Class I relation. Moreover, the A′–B′ distance was equal to 2 mm, confirming the ANB angle

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