The torque component of PIP in Class II treatment

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Traditionally in orthodontics upper incisor torque has been related to the maxillary plane, with a cephalometric value of 110° to 115° being a typical goal (Fig. 7.12). The Arnett analysis relates upper incisor torque to the maxillary occlusal plane, and lower incisor torque to the mandibular occlusal plane, with the male upper central incisor torque being ideally 58° and the female 57° (Fig. 7.13). More information on upper incisor torque is given on pages 174-176.

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110 to 115"

Fig. 7.12 In traditional orthodontic treatment planning, upper incisor torque is related to the maxillary plane.

110 to 115"

Fig. 7.13 The Arnett analysis relates upper incisor torque to the upper occlusal plane, and has slightly different values for males and females.

Fig. 7.12 In traditional orthodontic treatment planning, upper incisor torque is related to the maxillary plane.

Fig. 7.13 The Arnett analysis relates upper incisor torque to the upper occlusal plane, and has slightly different values for males and females.

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