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Rapid maxillary expansion in children with obstructive sleep apnea syndrome.

Pirelli, Paola; Saponara, Maurizio; Guilleminault, Christian.
Sleep; 27(4): 761-6, 2004 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-15283012


To evaluate the effect of rapid maxillary expansion on children with nasal breathing and obstructive sleep apnea syndrome.


Recruitment of children with maxillary contraction, without of adenoid hypertrophy, with a body mass index < 24 kg/m2, with obstructive sleep apnea syndrome demonstrated by polysomnography, and whose parents signed informed consent. Otolaryngologic and orthognathic-odontologic evaluation with clinical evaluation, anterior rhinometry and nasal fibroscopy, panoramic radiographs, anteroposterior and laterolateral telecephalometry were performed at entry and follow-up. INTERVENTION Rapid maxillary expansion (ie, active phase of treatment) was performed for 10 to 20 days; maintenance of device (for consolidation) and orthodontic treatment on teeth lasted 6 to 12 months.


31 children (19 boys), mean age 8.7 years, participated in the study. The mean apnea-hypopnea index was 12.2 events per hour. At the 4-month follow-up, the anterior rhinometry was normal, and all children had an apnea-hypopnea index < 1 event per hour. The mean cross-sectional expansion of the maxilla was 4.32 +/- 0.7 mm. There was a mean increase of the pyriform opening of 1.3 +/- 0.3 mm.


Rapid maxillary expansion may be a useful approach in dealing with abnormal breathing during sleep.