Maxillary dentoskeletal outcomes of the expander with differential opening and the fan-type expander: a randomized controlled trial.
Imaging, three-dimensional
Orthodontic appliances
Orthodontics, interceptive
Palatal expansion technique
Journal
Clinical oral investigations
ISSN: 1436-3771
Titre abrégé: Clin Oral Investig
Pays: Germany
ID NLM: 9707115
Informations de publication
Date de publication:
Sep 2021
Sep 2021
Historique:
received:
18
08
2020
accepted:
05
02
2021
pubmed:
14
2
2021
medline:
20
8
2021
entrez:
13
2
2021
Statut:
ppublish
Résumé
The aim of this study was to compare the maxillary dentoskeletal outcomes of the expander with differential opening (EDO) and the fan-type expander (FE). Forty-eight patients with maxillary arch constriction in the mixed dentition were randomly allocated into EDO and FE groups. Cone-beam computed tomography scans were acquired before and after expansion. Linear and angular three-dimensional changes were assessed after cranial base superimposition using the ITK-SNAP and the 3D Slicer software. T or Mann-Whitney U tests were used for intergroup comparisons (P<0.05). The EDO group comprised 24 patients treated with the EDO (13 female, 11 male; 7.6 years). The FE group comprised 24 patients treated with the FE (14 female, 10 male; 7.8 years). Skeletal lateral displacements were greater in the EDO group with greater expansion in the orbital, nasal cavity, zygomatic bone, and palate regions (mean intergroup differences of 0.4, 0.8, 0.9, and 1.1 mm, respectively). Intercanine expansion and canine buccal inclination were greater in the FE group, while intermolar distance changes and molar buccal inclination were greater in the EDO group. Similar changes were observed for vertical and anteroposterior displacements and palatal plane rotation. The EDO produced greater transverse skeletal expansion compared to the FE, with similar vertical and anteroposterior effects. Dental changes were greater in the molar region for patients treated with the EDO and in the canine region for patients treated with the FE. The EDO and the FE are capable of producing skeletal changes in the mixed dentition. The decision between both expanders will depend on the amount of expansion required in the molar region and in the nasomaxillary complex. The trial was registered at ClinicalTrials.gov , under the identifier NCT03705871.
Identifiants
pubmed: 33580351
doi: 10.1007/s00784-021-03832-9
pii: 10.1007/s00784-021-03832-9
pmc: PMC8357852
mid: NIHMS1688380
doi:
Banques de données
ClinicalTrials.gov
['NCT03705871']
Types de publication
Journal Article
Randomized Controlled Trial
Langues
eng
Pagination
5247-5256Subventions
Organisme : NIDCR NIH HHS
ID : R01 DE024450
Pays : United States
Organisme : Fundação de Amparo à Pesquisa do Estado de São Paulo
ID : 2017/24115-2
Organisme : Fundação de Amparo à Pesquisa do Estado de São Paulo
ID : 2017/12911-9
Organisme : Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
ID : Finance Code 001
Informations de copyright
© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
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