Fig. 10From: Tomographic assessment of palatal suture opening pattern and pterygopalatine suture disarticulation in the axial plane after midfacial skeletal expansiona Superimposition of the two images, before and after expansion, illustrating the rotational movement around the center of rotation (CR), near the posterior zygomatic arch. The α value represents the degree of rotation between pre- and post-ANS positions. The β value represents the degree of rotation between pre- and post-PNS positions. b The pterygopalatine suture oriented relatively parallel to maxillary movement. c The pterygopalatine suture is not parallel to maxillary movementBack to article page