Skeletal and dental effects of serial extractions performed with or without maxillary expansion-A retrospective controlled study.
growth change
maxillary expansion
serial extractions
Journal
Orthodontics & craniofacial research
ISSN: 1601-6343
Titre abrégé: Orthod Craniofac Res
Pays: England
ID NLM: 101144387
Informations de publication
Date de publication:
Nov 2023
Nov 2023
Historique:
revised:
26
02
2023
received:
09
09
2022
accepted:
27
02
2023
medline:
4
10
2023
pubmed:
12
3
2023
entrez:
11
3
2023
Statut:
ppublish
Résumé
The study aimed to compare severe crowding treatment's skeletal and dental effects by serial extractions or maxillary expansion and serial extractions in the mixed dentition phase. The retrospective controlled study included lateral cephalograms of 78 subjects aged 8.5 ± 1.4 years, 52 consecutively treated because of severe crowding, and 26 untreated controls matched for baseline age and observational period. Subjects were clustered according to the treatment modality, either serial extraction (EX) or expansion and extraction (EXP-EX) group. Sagittal and vertical skeletal as well as dental cephalometric parameters were assessed at baseline and after the eruption of all permanent posterior teeth, and group comparisons were performed. Both treatment modalities significantly affected the vertical skeletal parameters in terms of decreasing the mandibular and occlusal plane inclination and increasing the facial height index. A distinct treatment effect on the gonial angle was observed, with a significant decrease in its superior part observed in both extraction groups. The annualized changes in the superior part of the gonial angle significantly differ (P = .036) between the Control (-0.04 ± 0.6), EX (-0.44 ± 0.6) and EXP-EX (-0.34 ± 0.5) groups. Upper and lower incisor inclination did not change significantly in any of the groups; however, the interincisal angle at follow-up was significantly smaller in the Control compared with both treated groups. Serial extractions and a combination of maxillary expansion and serial extractions have similar significant skeletal effects, mainly affecting vertical cephalometric parameters if performed during the pre-pubertal growth phase.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
642-649Subventions
Organisme : Javna Agencija za Raziskovalno Dejavnost RS
Commentaires et corrections
Type : CommentIn
Informations de copyright
© 2023 The Authors. Orthodontics & Craniofacial Research published by John Wiley & Sons Ltd.
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