Numerous deep-bite cases present with retroclined incisors, and proclination of these teeth contributes to bite opening in the anterior area. In the lower arch, this generally consists of lower incisor crowns being proclined. In the upper arch, a combination of crown proclination and root torque control normally occurs, with roots moving distally in the bone (Fig. 6.7).
Fig. 6.7 Proclination of incisors.
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