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Effects of premolar extraction and orthodontic treatment in adolescents - a retrospective cephalometric study
Malmö University, Faculty of Odontology (OD).
Malmö University, Faculty of Odontology (OD).ORCID iD: 0009-0001-8816-4952
Malmö University, Faculty of Odontology (OD).ORCID iD: 0000-0001-9885-0019
2023 (English)In: Acta Odontologica Scandinavica, ISSN 0001-6357, E-ISSN 1502-3850Article in journal (Refereed) Epub ahead of print
Abstract [en]

Objectives: To evaluate the cephalometric effects of premolar extraction on skeletal and dental parameters, and on the soft tissues, in patients subsequently treated with fixed appliances. Prevalence and severity of external apical root resorption due to premolar extraction were also examined.Materials and methods: The dental records of 79 patients treated with fixed appliances were retrieved (groups: extraction, n = 19; non-extraction, n = 60). Pre- and post-treatment statuses of skeletal, dentoalveolar, and soft tissue variables were analyzed on lateral cephalograms to determine change. Periapical radiographs of the maxillary incisors were assessed for external apical root resorption using the Levander & Malmgren index. The t-test, Mann-Whitney U test, chi-squared test, and Kruskal-Wallis test were used to analyze the data. Significance was set at p < .05.Results: Changes in the protrusion and proclination of the incisors and in lip position were significantly different between the groups. Prevalence of external apical root resorption in the two groups was similar.Conclusions: Our findings suggest that extraction therapy affects dentoalveolar traits but not jaw position, nor the risk of root resorption, in patients treated with fixed appliances

Place, publisher, year, edition, pages
Taylor & Francis, 2023.
Keywords [en]
Cephalometry, extraction treatment, external apical root resorption, malocclusion, orthodontics
National Category
Dentistry
Identifiers
URN: urn:nbn:se:mau:diva-63500DOI: 10.1080/00016357.2023.2267145ISI: 001084861300001PubMedID: 37830312Scopus ID: 2-s2.0-85174024461OAI: oai:DiVA.org:mau-63500DiVA, id: diva2:1810232
Available from: 2023-11-07 Created: 2023-11-07 Last updated: 2024-03-18Bibliographically approved

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Ekstam, MariaSonesson, MikaelHellén-Halme, Kristina

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