Volumetric changes of the nose and nasal airway 2 years after tooth-borne and bone-borne surgically assisted rapid maxillary expansion
SourceEuropean Journal of Oral Sciences, 121, 5, (2013), pp. 450-6
Article / Letter to editor
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Orthodontics and Oral Biology
Oral and Maxillofacial Surgery
European Journal of Oral Sciences
SubjectNCEBP 2: Evaluation of complex medical interventions; NCEBP 2: Evaluation of complex medical interventions ONCOL 3: Translational research
This study aimed to assess the effects of bone-borne and tooth-borne surgically assisted rapid maxillary expansion on the volumes of the nose and nasal airway 2 yr after maxillary expansion. This prospective cohort study included 32 patients with transverse maxillary hypoplasia. Expansion was performed with a tooth-borne distractor (Hyrax) in 19 patients and with a bone-borne distractor [transpalatal distractor (TPD)] in the remaining 13. Cone beam computed tomography scans and three-dimensional (3D) photographs of the face were acquired before treatment and 22 +/- 7 months later, and were used to evaluate the volumes of the nose and nasal airway. Nasal volume increased by 1.01 +/- 1.6% in the Hyrax group and by 2.39 +/- 2.4% in the TPD group. Nasal airway volume increased by 9.7 +/- 5.6% in the Hyrax group and by 12.9 +/- 12.7% in the TPD group. Changes in the nasal volume and in the nasal airway volume between the pre- and post-treatment measurements were statistically significant, whereas differences between the treatment groups were not; 22 months after surgically assisted rapid maxillary expansion, the increases in the nasal volume and in the nasal airway volume were comparable between tooth-borne and bone-borne devices.
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