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. 2020 May 1;90(3):425-431.
doi: 10.2319/050819-320.1.

Effects of symmetric and asymmetric rapid maxillary expansion treatments on pharyngeal airway and sinus volume

Emire Aybuke Erdur, Mucahid Yıldırım, Rabia Merve Celik Karatas, Mehmet Akin

Effects of symmetric and asymmetric rapid maxillary expansion treatments on pharyngeal airway and sinus volume

Emire Aybuke Erdur et al. Angle Orthod. .

Abstract

Objective: To evaluate pharyngeal airway and maxillary sinus volumes following symmetric rapid maxillary expansion (RME) and asymmetric rapid maxillary expansion (ARME) treatment using cone-beam computed tomography (CBCT).

Materials and methods: The study consisted of 60 patients presenting to the orthodontics clinic with an indication that they required symmetric or asymmetric rapid maxillary expansion treatment. Individuals were included if they were aged 12-15 years and had symmetric (RME group; 14 girls, 16 boys) or asymmetric (ARME group; 16 girls, 14 boys) maxillary deficiency. Maxillary sinus volume (mm3) and pharyngeal airway volume (upper, lower, and total; mm3) were evaluated using CBCT records. The parameters were compared before treatment (T1) and after 3 months in retention (T2).

Results: All measurements at T2 were increased significantly compared with T1 in the RME group (P < .05). In the ARME group, changes in the lower pharyngeal airway and the nonaffected maxillary sinus volumes (non-affected side of maxillary sinus volumes) were not significant; however, the other measurements increased significantly from T1 to T2 (P < .05). Intergroup comparisons revealed that total pharyngeal airway volume and total maxillary sinus volume changes were significantly greater in the RME group.

Conclusions: Pharyngeal airway and maxillary sinus volumes increased with both RME and ARME treatment. Both were found to be effective for treating transverse maxillary deficiency.

Keywords: Airway volume; Asymmetric rapid maxillary expansion; Cone-beam computed tomography; Rapid maxillary expansion.

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Figures

Figure 1.
Figure 1.
Rapid maxillary expansion.
Figure 2.
Figure 2.
Asymmetric rapid maxillary expansion appliance.
Figure 3.
Figure 3.
Pharyngeal airway volume measurement.
Figure 4.
Figure 4.
Maxillary sinus volume measurement.
See this image and copyright information in PMC

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