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Demonstration of photographic and radiographic measurement of bony landmarks. 3a: Lateral photograph used to measure angle between the plane of the pedestal and the line joining the root of the maxillary incisors and the atlanto-occipital joint (∠Ped/AOJ-I). 3b: Lateral radiograph used to measure angle between lambda-bregma axis and the AOJ-I line (∠L-B/AOJ-I).
