204 Risk factors leading to abnormal cranio-facial growth associated with abnormal breathing during sleep

Abstracts / Sleep Medicine 7 (2006) S1–S127

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204 Risk factors leading to abnormal cranio-facial growth associated with abnormal breathing during sleep Christian Guilleminault * Stanford University Medical Center, Sleep Disorders Clinic, CA, USA doi:10.1016/j.sleep.2006.07.107

205 Orthodontic treatments and maxillo-mandibular surgeries that may be helpful Stacey Quo * University of California, San Francisco Dental School, Moffet Hospital, Palo Alto, CA, USA doi:10.1016/j.sleep.2006.07.108

206 Results of cohort of children submitted to rapid maxillary expansion before or after T and A P. Pirelli 1,*, M. Saponara 1,2 1

Department of Orthodontics, University ‘‘Tor Vergata’’, Rome, Italy 2 Department of Neurology and Otolaryngology, University ‘‘La Sapienza’’, Rome, Italy Objectives: Since most of the OSAS patients in pediatric age show both maxillary contraction and adenoid and tonsillar hypertrophy, in this study we had to evaluate which of the two pathologies was primary, in order to avoid adenotonsillectomy in those patients which had no chronic inflammation. Materials and methods: We studied a sample of 80 children with both adenoid and tonsillar hypertrophy and malocclusion characterized by a narrow upper jaw. All the patients underwent a polysomnographic assessment ENT visit, orthognatodontic examination and Xray investigations, carried out in time T0 and T1 (4 months later). The sample has been divided in two groups: the first group (A) of 40 patients were subjected only to the orthodontic treatment of R.M.E.; the second group (B) of 40 patients underwent only adenotonsillectomy (A-T). Results: The polysomnographic test results in T1 have shown evidence in group A that 18 patients presented total remission of the symptoms, 14 patients presented a significant improvement and 8 patients a minimum or no improvement. The patients in group B presented a remission of the symptoms in 7 cases, an improvement in 17 cases and no improvement in 16 cases. After polysomnographic tests in T1 we submitted the 22 patients in group A, that still presented symptoms of OSAS, to A-