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Early headgear activator treatment of Class II malocclusion with excessive overjet: a randomized controlled trial.
Region Östergötland, Public Dental Health Care, Center for Orthodontics/Pedodontics Norrköping.
Department of Orthodontics, Faculty of Odontology, Malmö University , Malmö, Sweden.
Department of Orthodontics, Faculty of Odontology, Malmö University , Malmö, Sweden.
2021 (English)In: European Journal of Orthodontics, ISSN 0141-5387, E-ISSN 1460-2210, Vol. 43, no 6, p. 639-647Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES: To compare early headgear activator treatment of Class II malocclusion with excessive overjet with untreated control subjects in terms of the primary outcomes overjet and overbite as well as the effect regarding oral-health-related quality of life (OHRQoL), lip closure, incidence of trauma, and skeletal changes.

TRIAL DESIGN: Two-arm parallel group single-centre randomized controlled trial.

MATERIAL AND METHODS: A total of 60 children (mean age 9.5 years) presenting a Class II malocclusion with excessive overjet were recruited. The trial was designed as intention-to-treat and the participants randomized by an independent person not involved in the trial to either early treatment with headgear activator or to an untreated control group (UG). Dental and skeletal variables as well as registrations of OHRQoL, lip closure, and incidence of trauma were recorded. For the treatment group, data were registered at baseline before treatment and when treatment was finished, corresponding to approximately 2 years. For the UG, registrations were made at baseline and at 11 years of age. Observers were blinded to treatment allocation when assessing outcomes.

RESULTS: Early treatment with headgear activator significantly decreased overjet and improved molar relationship when compared with untreated controls. The effects were primarily due to dentoalveolar changes. Early treatment had no evident effect regarding OHRQoL, lip closure, or incidence of trauma. Lack of cooperation resulted in unsuccessful treatments for 27% of the patients.

LIMITATIONS: The trial was a single-centre trial and can thus be less generalizable.

CONCLUSIONS: The main treatment effect of early headgear activator treatment of Class II malocclusion with excessive overjet is reduction of overjet.

TRIAL REGISTRATION: NCT04508322.

Place, publisher, year, edition, pages
Oxford University Press, 2021. Vol. 43, no 6, p. 639-647
Keywords [en]
Child; dental clinics; malocclusion; wounds and injuries; lip; molar tooth; quality of life; transcriptional activation; overjet; dental
National Category
Dentistry
Identifiers
URN: urn:nbn:se:liu:diva-173602DOI: 10.1093/ejo/cjaa073ISI: 000743691800005PubMedID: 33274388OAI: oai:DiVA.org:liu-173602DiVA, id: diva2:1531380
Note

Funding agencies: Eklund foundation Malmö, Sweden(2018), Region Östergötland, Sweden and Faculty of Odontology,Malmö University, Sweden.

Available from: 2021-02-25 Created: 2021-02-25 Last updated: 2022-05-19

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Kallunki, Jenny

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