Fig.6From: Tomographic assessment of palatal suture opening pattern and pterygopalatine suture disarticulation in the axial plane after midfacial skeletal expansiona Two parallel lines, in the same plane, form 0°; two non-parallel lines converging at an angle. b AB and CD lines are intersecting in a distant point with 0.4°. AB represents right palatal line, and CD represents left palatal lineBack to article page