Fig. 2From: Changes in facial width according to the ostectomy level of the proximal bone segment in intraoral vertical ramus osteotomy for mandibular prognathismThe horizontal and coronal planes. From top to bottom, the FH plane used as the basic horizontal plane and the horizontal planes for measurement: the Sigmoid N plane, Mandibular F plane, and Alveolar plane. From medial to distal, the Porion Coronal plane used as the basic coronal plane and the coronal planes for measurement: the Condyle Coronal plane, Mandibular F Coronal plane, and Coronoid pr Coronal plane. A Facial skeletal image and planes. B Combined image with facial skeletal and soft tissue image. C Facial soft tissue image and planesBack to article page