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Progress in Orthodontics
Fig. 1 | Progress in Orthodontics

Fig. 1

From: Effectiveness of clear aligners in achieving proclination and intrusion of incisors among Class II division 2 patients: a multivariate analysis

Fig. 1

Measurement of dental anatomic characteristics. A Point identification (1-root apex; 2-point of lower 1/3 root; 3-labial alveolar ridge crest; 4-palatal alveolar ridge crest; 5-palatal cemental-enamel junction (CEJ); 6-labial CEJ; 7-midpoint of labial and palatal CEJ; 8-apex of crown pulp cavity; 9-incisal edge point; 10-projection of midpoint of crown axis on labial surface). B Line distance measurement (a-crown length; b-root length; c-height of labial alveolar bone; d-height of palatal alveolar bone). C Crown-root angle; D Labial surface-axis angle

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