Treatment of Class II malocclusion with 2-maxillary premolar extractions: Monthly vs biweekly appointments, which is more efficient?

Autor: Tonello DL; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., Cavalcanti HN; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil. Electronic address: heloisanelsonc@gmail.com., de Almeida Lázaro VR; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., Bellini-Pereira SA; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., Aliaga-Del Castillo A; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., Henriques JFC; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., Garib D; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., Janson G; Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil.
Jazyk: angličtina
Zdroj: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics [Am J Orthod Dentofacial Orthop] 2024 Jan; Vol. 165 (1), pp. 114-119. Date of Electronic Publication: 2023 Oct 28.
DOI: 10.1016/j.ajodo.2023.07.017
Abstrakt: Introduction: This study compared whether there is a difference in treatment time (TT) and efficiency when appointments are held once a month or at 2-week intervals in patients with Class II malocclusion treated with 2-premolar extractions METHODS: The patients of this retrospective sample were treated with the same orthodontic mechanics and divided into 2 groups according to frequencies of orthodontic appointments. Group 1 consisted of 18 patients (10 males, 8 females), with an initial mean age of 14.38 ± 1.38 years and appointments once a month. Group 2 consisted of 19 patients (9 males, 10 females), with an initial mean age of 14.12 ± 1.38 years and biweekly appointments. Edgewise fixed appliances with a slot size of 0.022 × 0.028 mm were used, and the anterior teeth were retracted en-masse with a rectangular wire and elastic chains. The Peer Assessment Rating and Objective Grading System indexes were measured in the dental models at the beginning and the end of treatment. Efficiency was assessed by dividing the percentage of improvement of each occlusal index concerning the multiplication of TT and the number of appointments.
Results: Both groups presented similar Peer Assessment Rating and Objective Grading System indexes at the end of treatment. Groups 1 and 2 presented different TTs (28.06 and 22.05 months, respectively); however, there were no differences regarding the efficiency of both protocols.
Conclusions: Patients with Class II malocclusion treated with 2-maxillary premolars had significantly shorter treatment times when seen on biweekly appointments than those with monthly appointments; however, there was no difference in efficiency between protocols.
(Copyright © 2023 American Association of Orthodontists. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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