Is early class III protraction facemask treatment effective? A multicentre, randomized, controlled trial: 15-month follow-up

Nicky Mandall, Andrew DiBiase, Simon Littlewood, Spencer Nute, Richard Cousley, Fiona Dyer, Rye Mattick, Barbara Doherty, Nadia Stivaros, Ross McDowall, Inderjit Shargill, Helen Worthington

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Objective: To investigate the effectiveness of early class III protraction facemask treatment in children under 10 years of age. Design: Multicentre, randomized controlled trial. Setting: Eight UK hospital orthodontic units. Subjects and methods: Seventy-three patients were randomly allocated, stratified for gender, into an early class III protraction facemask group (PFG) (n=35) and a control/no treatment group (CG) (n=38). Outcomes: Dentofacial changes from lateral cephalograms and occlusal changes using the peer assessment rating (PAR). Selfesteem was assessed using the Piers-Harris children's self-concept scale, and the psychosocial impact of malocclusion with an oral aesthetic subjective impact scores (OASIS) questionnaire. Temporomandibular joint (TMJ) signs and symptoms were also recorded. The time points for data collection were at registration (DC1) and 15 months later (DC2). Results: The following mean skeletal and occlusal changes occurred from the class III starting point: SNA, PFG moved forwards 1.4° (CG forward 0.3°; P=0.018); SNB, PFG moved backwards 20.7° (CG forward 0.8°; P
    Original languageEnglish
    Pages (from-to)149-161
    Number of pages12
    JournalJournal of Orthodontics
    Volume37
    Issue number3
    DOIs
    Publication statusPublished - Sept 2010

    Keywords

    • Class III skeletal pattern
    • Early orthopaedic treatment
    • Protraction facemask
    • Randomized controlled trial

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