Hakan El1, Juan Martin Palomo. 1. a Associate Professor, Hacettepe University, Faculty of Dentistry, Department of Orthodontics, Ankara, Turkey.
Abstract
OBJECTIVES: To evaluate, by using cone beam computed tomography, the skeletal, dental, oropharyngeal (OP) airway volume, and nasal passage (NP) volume changes that occur after rapid maxillary expansion (RME). MATERIALS AND METHODS: Two groups were selected, each with 35 patients (15 males, 20 females), an RME group (mean age, 14.02 ± 1.46 years) and a control group (mean age, 14.10 ± 1.44 years). The RME group consisted of patients with maxillary constriction who were treated with Hyrax palatal expanders, and the control group comprised age- and sex-matched patients who underwent comprehensive orthodontic treatment without the use of a rapid maxillary expander. RESULTS: All of the transverse skeletal (medial orbital width, lateral nasal width, maxillary width, and mandibular width) and interdental (intermolar, interpremolar, and intercanine) parameters were significantly enlarged in the RME group. A statistically significant increase in airway variables was seen in both groups between pretreatment (T0) and final records (T1). The mean increase of NP airway volume for the RME group (1719.9 ± 1510.7 mm(3)) was twofold compared with the control group (813.6 ± 1006.7 mm(3)), and no intergroup significant difference was found for the OP volume. CONCLUSIONS: Rapid maxillary expansion creates a significant increase in nasal passage airway volume but no significant change in the oropharyngeal airway volume.
OBJECTIVES: To evaluate, by using cone beam computed tomography, the skeletal, dental, oropharyngeal (OP) airway volume, and nasal passage (NP) volume changes that occur after rapid maxillary expansion (RME). MATERIALS AND METHODS: Two groups were selected, each with 35 patients (15 males, 20 females), an RME group (mean age, 14.02 ± 1.46 years) and a control group (mean age, 14.10 ± 1.44 years). The RME group consisted of patients with maxillary constriction who were treated with Hyrax palatal expanders, and the control group comprised age- and sex-matched patients who underwent comprehensive orthodontic treatment without the use of a rapid maxillary expander. RESULTS: All of the transverse skeletal (medial orbital width, lateral nasal width, maxillary width, and mandibular width) and interdental (intermolar, interpremolar, and intercanine) parameters were significantly enlarged in the RME group. A statistically significant increase in airway variables was seen in both groups between pretreatment (T0) and final records (T1). The mean increase of NP airway volume for the RME group (1719.9 ± 1510.7 mm(3)) was twofold compared with the control group (813.6 ± 1006.7 mm(3)), and no intergroup significant difference was found for the OP volume. CONCLUSIONS: Rapid maxillary expansion creates a significant increase in nasal passage airway volume but no significant change in the oropharyngeal airway volume.
Authors: Ying Zhao; Manuel Nguyen; Elizabeth Gohl; James K Mah; Glenn Sameshima; Reyes Enciso Journal: Am J Orthod Dentofacial Orthop Date: 2010-04 Impact factor: 2.650
Authors: Jillian M Gordon; Mark Rosenblatt; Manisha Witmans; Jason P Carey; Giseon Heo; Paul W Major; Carlos Flores-Mir Journal: Angle Orthod Date: 2009-09 Impact factor: 2.079
Authors: Pedro Pileggi Vinha; Alan Luiz Eckeli; Ana Célia Faria; Samuel Porfirio Xavier; Francisco Veríssimo de Mello-Filho Journal: Sleep Breath Date: 2015-06-20 Impact factor: 2.816