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Figure 2: Sagittal occlusal analysis. In addition to traditional landmarks, two reference points were used: Frontomaxillary nasal suture (FMN); T point, most superior point of the anterior wall of sella turcica at the junction with tuberculum sellae. Registration line used: T-FMN L, line used for superimposition of two cephalograms with T point as the registration point. Reference coordination system (occlusal line [OL] and occlusal line perpendicular [OLp]): OL, a line through incisal tip of upper incisors and distobuccal cusp of upper permanent fi rst molars; OLp, a line perpendicular to OL through T point |
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