Orthodontic-Orthopedic-Surgical Treatment of Syndromic Third Class Proposal of a New Craniofacial Cephalometric MethodCoppotelli, Emanuela, DDS; Incisivo, Veronica, MD; Vernucci, Roberto Antonio, DDS; Mazzoli, Valentina, DDS; Barbato, Ersilia, MDS; Silvestri, Alessandro, MDSJournal of Craniofacial Surgery: June 2019 - Volume 30 - Issue 4 - p 1170–1173 doi: 10.1097/SCS.0000000000005253 Clinical Studies Buy SDC Abstract Author InformationAuthors Article MetricsMetrics The management of patients suffering from class III due to syndromic craniosynostosis requires a multidisciplinary team to prevent and correct the complex clinical features related to the syndrome. Among the main clinical features, the midface hypoplasia requires surgical advancement with a rigid external distraction device. The comparison of pre- and postdistraction lateral cephalometries is often difficult in these patients, because the craniofacial advancement mobilizes the landmarks routinely used in cephalometry. Aim of this study is to evaluate occlusal, maxillary, and facial changes obtained after the midface osteodistraction using as reference the PM plane, that does not undergo postsurgical spatial modifications. The before and after surgery lateral X-rays of 12 patients were compared to test the cephalometric protocol: 10 angles and 11 linear distances were evaluated. The cephalometric comparison before and after osteodistractions of syndromic class III, using as reference the Enlow's PM plane, has confirmed the data present in current literature, consisting in forward and downward movements of facial middle 3rd, with clockwise rotation of the splanchnocranium and increase of the facial heights. The use of the PM plane as reference could be the solution to problems that have been an obstacle for the study of occlusal and facial changes in patients affected by craniofacial dysostosis. Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy. Address correspondence and reprint requests to Emanuela Coppotelli, DDS, Via Caserta, 6, 00161 Roma, Italy; E-mail: firstname.lastname@example.org Received 28 January, 2018 Accepted 16 November, 2018 The authors report no conflicts of interest. Supplemental digital contents are available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (www.jcraniofacialsurgery.com). © 2019 by Mutaz B. Habal, MD.