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      Occlusal outcome after orthodontic treatment with preadjusted straight-wire and standard edgewise appliances : A retrospective cohort study Translated title: Okklusales Ergebnis nach kieferorthopädischer Behandlung mit „straight-wire“- und „standard edgewise“-Apparaturen : Eine retrospektive Kohortenstudie

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          Abstract

          Purpose

          Orthodontic fixed appliances have been proven to be effective in treating a wide variety of malocclusions, and different types of appliances have emerged during recent decades. However, the comparative effects of different appliances have not been adequately assessed. Thus, the aim was to assess the occlusal outcome of orthodontic treatment with preadjusted straight-wire (SWIRE) and standard edgewise (SEDGE) appliances.

          Methods

          In all, 56 patients (mean age: 13.5 years; 45% male) receiving extraction-based treatment with either SWIRE or SEDGE appliances were included. Between-group differences in the occlusal outcome assessed with the American Board of Orthodontists Objective Grading System (ABO-OGS) and treatment duration were analyzed statistically at the 5% level.

          Results

          The average ABO-OGS score was 31.3 ± 7.2 points and 34.0 ± 10.4 points in the SWIRE and SEDGE groups with no statistically significant difference between groups ( P = 0.26). Treatment duration was significantly shorter in the SWIRE group compared to the SEDGE group, with an average difference of −6.8 months (95% confidence interval [95% CI] = −9.6 to −4.0 months; P < 0.001). Likewise, fewer visits were needed with SWIRE compared to SEDGE appliances with an average difference of −7.2 visits (95% CI = −10.3 to −4.2 visits; P < 0.001). Adjusting for the influence of any potential confounders did not considerably impact the results.

          Conclusion

          Similar treatment outcomes were observed after premolar extraction treatment with SWIRE and SEDGE appliances. On the other hand, SEDGE appliances were associated with prolonged treatment duration and more visits needed to complete treatment compared to SWIRE appliances.

          Supplementary Information

          The online version of this article (10.1007/s00056-020-00273-z) contains supplementary material, which is available to authorized users.

          Translated abstract

          Zielsetzung

          Festsitzende kieferorthopädische Apparaturen haben sich bei der Behandlung einer Vielzahl von Fehlstellungen als wirksam erwiesen, und in den letzten Jahrzehnten sind verschiedene Apparaturtypen entwickelt worden. Die unterschiedlichen Auswirkungen der verschiedenen Apparaturen sind jedoch noch nicht angemessen erforscht worden. Ziel war es daher, das okklusale Outcome nach einer kieferorthopädischen Behandlung mit vorjustierten SWIRE(„straight-wire“)- und SEDGE(„standard edgewise“)-Apparaturen zu untersuchen.

          Methoden

          Insgesamt wurden 56 Patienten (Durchschnittsalter 13,5 Jahre, 45% männlich) aufgenommen, die eine extraktionsbasierte Behandlung entweder mit SWIRE- oder SEDGE-Geräten erhielten. Die Unterschiede zwischen den Gruppen hinsichtlich des anhand des ABO-OGS (American Board of Orthodontists Objective Grading System) bewerteten okklusalen Outcomes und der Behandlungsdauer wurden auf der 5%-Ebene statistisch analysiert.

          Ergebnisse

          Der durchschnittliche ABO-OGS-Score betrug 31,3 ± 7,2 Punkte in der SWIRE- und 34,0 ± 10,4 Punkte in der SEDGE-Gruppe und es gab keinen statistisch signifikanten Unterschied zwischen den Gruppen ( P = 0,26). Die Behandlungsdauer war in der SWIRE-Gruppe im Vergleich zur SEDGE-Gruppe mit einem durchschnittlichen Unterschied von -6,8 Monaten (95% Konfidenzintervall [95%-KI] −9,6 bis −4,0 Monate; P < 0,001) signifikant kürzer. Entsprechend waren mit SWIRE weniger Kontrolluntersuchungen erforderlich als mit SEDGE-Geräten, mit einer durchschnittlichen Differenz von -7,2 (95%-KI -10,3 bis -4,2; P < 0,001). Die Anpassung unter Berücksichtigung des Einflusses möglicher Confounder hatte keinen wesentlichen Einfluss auf die Ergebnisse.

          Schlussfolgerung

          Ähnliche Behandlungsergebnisse wurden nach Prämolarenextraktionsbehandlung mit SWIRE- und mit SEDGE-Apparaturen beobachtet. Auf der anderen Seite waren bei der Verwendung von SEDGE-Apparaturen im Vergleich zu SWIRE-Apparaturen eine längere Behandlungsdauer und mehr Besuche erforderlich, um die Behandlung abzuschließen.

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          Most cited references41

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          STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENT

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            A Concordance Correlation Coefficient to Evaluate Reproducibility

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              Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): explanation and elaboration.

              Much medical research is observational. The reporting of observational studies is often of insufficient quality. Poor reporting hampers the assessment of the strengths and weaknesses of a study and the generalisability of its results. Taking into account empirical evidence and theoretical considerations, a group of methodologists, researchers, and editors developed the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) recommendations to improve the quality of reporting of observational studies. The STROBE Statement consists of a checklist of 22 items, which relate to the title, abstract, introduction, methods, results and discussion sections of articles. Eighteen items are common to cohort studies, case-control studies and cross-sectional studies and four are specific to each of the three study designs. The STROBE Statement provides guidance to authors about how to improve the reporting of observational studies and facilitates critical appraisal and interpretation of studies by reviewers, journal editors and readers. This explanatory and elaboration document is intended to enhance the use, understanding, and dissemination of the STROBE Statement. The meaning and rationale for each checklist item are presented. For each item, one or several published examples and, where possible, references to relevant empirical studies and methodological literature are provided. Examples of useful flow diagrams are also included. The STROBE Statement, this document, and the associated Web site (http://www.strobe-statement.org/) should be helpful resources to improve reporting of observational research. Copyright © 2014 The Authors. Published by Elsevier Ltd.. All rights reserved.
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                Author and article information

                Contributors
                snpapage@gmail.com
                Raphael.Tilen@zzm.uzh.ch
                vaska.vandevska-radunovich@odont.uio.no
                theodore.eliades@zzm.uzh.ch
                Journal
                J Orofac Orthop
                J Orofac Orthop
                Journal of Orofacial Orthopedics
                Springer Medizin (Heidelberg )
                1434-5293
                1615-6714
                13 January 2021
                13 January 2021
                2021
                : 82
                : 5
                : 321-328
                Affiliations
                [1 ]GRID grid.7400.3, ISNI 0000 0004 1937 0650, Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, , University of Zurich, ; Plattenstraße 11, Zurich, Switzerland
                [2 ]GRID grid.5510.1, ISNI 0000 0004 1936 8921, Department of Orthodontics, Faculty of Dentistry, , University of Oslo, ; Oslo, Norway
                Author information
                http://orcid.org/0000-0003-1968-3326
                http://orcid.org/0000-0002-4098-5161
                http://orcid.org/0000-0003-2313-4979
                Article
                273
                10.1007/s00056-020-00273-z
                8384812
                33442754
                dc4ab56a-b7a6-442c-8c6e-af6a01868d82
                © The Author(s) 2020

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 22 May 2020
                : 16 October 2020
                Funding
                Funded by: University of Zurich
                Categories
                Original Article
                Custom metadata
                © Deutsche Gesellschaft für Kieferorthopädie 2021

                Orthopedics
                treatment outcome,treatment duration,orthodontics,fixed appliances,retrospective cohort study,ergebnis der behandlung,behandlungsdauer ,kieferorthopädie,festsitzende apparaturen,retrospektive kohortenstudie

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