Abstract
This retrospective study was performed to evaluate nasomaxillary changes in 36 patients
at an advanced stage of skeletal maturity who underwent miniscrew-assisted rapid palatal
expansion (MARPE) or surgically assisted rapid palatal expansion (SARPE) with/without
an alar base cinch. Cone beam computed tomography images taken before and after expansion
were analysed. Changes in the width of the dental arch (D66S, D66I), maxillary base
(MxMol), and nasal floor and nasal cavity in the molar and canine regions (NaFMol,
NaFCan, NaCMol, NaCCan) were compared, as well as changes in the choanal aperture
(CA) and nasal soft tissue (NW). The MARPE technique produced smaller dental changes
(D66S; P = 0.025) and greater nasomaxillary expansion (MxMol, P = 0.010; NaCMol, P = 0.016; NaCCan, P = 0.017; NaFMol, P = 0.001; CA, P = 0.002) than both SARPE techniques. Changes in NW did not differ significantly between
the groups (P = 0.200). MARPE uniformly increased the anterior and posterior widths of the nasal cavity.
SARPE expanded the nasal cavity in a ‘V-shape’ pattern. Changes in the nasal cavity
and choanal aperture related to the amount of dental arch expansion were greater for
MARPE than for SARPE. All three approaches increased the width of the nasal soft tissue,
although the cinch in SARPE limited this increase.
Key words
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Article info
Publication history
Published online: January 18, 2021
Accepted:
December 22,
2020
Identification
Copyright
© 2021 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
