Cephalometric changes after long-termearly treatment with face mask and maxillary intraoral appliance therapy

This article reports on a retrospective study of 25 children (mean age, 4 years 2 months) exhibiting Class III malocclusions and anterior cross-bites who were treated with a face mask and a maxillary intraoral appliance. Cephalometric radiographs were taken for all treated patients at three interval...

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Bibliographic Details
Published in:Seminars in orthodontics 2001-09, Vol.7 (3), p.169-179
Main Authors: Lertpitayakun, Prinda, Miyujima, Kuniaki, Kanomi, Ryuzo, Sinha, Pramod K.
Format: Article
Language:English
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Summary:This article reports on a retrospective study of 25 children (mean age, 4 years 2 months) exhibiting Class III malocclusions and anterior cross-bites who were treated with a face mask and a maxillary intraoral appliance. Cephalometric radiographs were taken for all treated patients at three intervals: before treatment (TO), after treatment (T1), and at posttreatment follow-up (T2). A control group consisted of 10 untreated Class III children (mean age, 3 years 11 months). Cephalometric radiographs were taken periodically for observation in this group. Paired t tests and independent t tests were performed to determine the significance of skeletal and dental changes related to treatment. Early therapy produced significant skeletal and dentoalveolar changes. The maxilla moved further forward in the treated group. Mandibular growth was similar in both treated and untreated groups. There was an improvement in the maxillomandibular relationship in the treated group. This was because of the proclination of the maxillary incisors and the retroclination of the mandibular incisors. Self-correction of the original anterior cross-bite in the untreated group occurred. Long-term follow-up revealed a decrease in overjet mainly caused by the proclination of the mandibular incisors. However, positive overjet was maintained throughout the study period. Despite some relapse, the treated group showed a net positive improvement in occlusion.
ISSN:1073-8746
1558-4631
DOI:10.1053/sodo.2001.26691