fa Craniofacial morphology in pediatric patients with persistent obstructive sleep apnea with or without positive airway pressure therapy: A cross-sectional cephalometric comparison with controls ارتودنسی Orthodontics پژوهشي Research <p> <strong>Introduction</strong></p><p>  Compression on the midface with nasal mask-delivered positive airway pressure (PAP) therapy in growing patients might contribute to midface retrusion. The objective of this study was to investigate the association between long-term PAP use and craniofacial morphologic pattern in children with persistent obstructive sleep apnea. </p><p> <strong>Methods</strong></p><p>  Images generated with cone-beam volumetric imaging were used to complete lateral cephalometric analyses of anteroposterior projection of the midface region. The study group included 12 subjects (10 boys, 2 girls mean age, 9.0 years) who used PAP therapy for at least 6 months and at least 6 hours per night. Measurements from this group were compared with those of a control group of 11 subjects (5 boys, 6 girls mean age, 9.6 years) with obstructive sleep apnea who did not have PAP. Measurements were taken at 1 time point. </p><p> <strong>Results</strong></p><p> <strong> </strong>No significant differences were identified between the groups for any cephalometric variable. Multivariate linear regression analysis also did not identify a significant association between the number of months of PAP therapy and the cephalometric variables. Cephalometric data for both groups were pooled for comparison with appropriate published normative values for age and sex. Anterior cranial base length, overall anteroposterior length of the maxillary base, and mandibular body length were significantly shorter than normal in the subjects compared with published normative values. </p><p> <strong>Conclusions</strong></p><p>  No association was demonstrated between midface projection and PAP use in growing patients. When compared with normative data for anterior cranial base, children with obstructive sleep apnea had shorter maxillary and mandibular lengths. </p><hr><p></p><p> <strong>Source: </strong>American Journal of Orthodontics & Dentofacial Orthopedics </p><p> <a href="http://www.ajodo.org/article/S0889-5406(13)00389-2/abstract" target="_blank"><font color="#0000ff">Full Text</font></a></p> 0 0 http://idai.ir/browse.php?a_code=A-10-32-1819&slc_lang=fa&sid=1 Mohammed M. Korayem 10031947532846008557 10031947532846008557 No Division of Orthodontics, School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada Manisha Witmans 10031947532846008558 10031947532846008558 No Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta; Northern Alberta Pediatric Sleep Laboratory, Stollery Children's Hospital, Edmonton, Alberta, Canada Joanna MacLean 10031947532846008559 10031947532846008559 No Division of Respiratory Medicine, Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta; Northern Alberta Pediatric Sleep Laboratory, Stollery Children's Hospital, Edmonton, Alberta, Canada Giseon Heo 10031947532846008560 10031947532846008560 No Division of Orthodontics, School of Dentistry, Faculty of Medicine and Dentistry, and Department of Mathematical and Statistical Sciences, Faculty of Science, University of Alberta, Edmonton, Alberta, Canada Hamdy El-Hakim 10031947532846008561 10031947532846008561 No Divisions of Pediatric Surgery and Otolaryngology Head and Neck Surgery, Department of Surgery, Stollery Children's Hospital; University of Alberta Hospitals, University of Alberta, Edmonton, Alberta, Canada Carlos Flores-Mir 10031947532846008562 10031947532846008562 No Division of Orthodontics, School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada Paul W.Major 10031947532846008563 10031947532846008563 Yes Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada