Three-dimensional analysis of maxillary protraction with intermaxillary elastics to miniplates
(2010) American Journal of Orthodontics and Dentofacial Orthopedics — Vol. 137, n° 2, p. 274-284 (2010)
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- Introduction: Early Class III treatment with reverse-pull headgear generally results in maxillary skeletal protraction but is frequently also accompanied by unfavorable dentoalveolar effects. An alternative treatment with intermaxillary elastics from a temporary anchorage device might permit equivalent favorable skeletal changes without the unwanted dentoalveolar effects. Methods: Six consecutive patients (3 boys, 3 girls; ages, 10-13 years 3 months) with Class III occlusion and maxillary deficiency were treated by using intermaxillary elastics to titanium miniplates. Cone-beam computed tomography scans taken before and after treatment were used to create 3-dimensional volumetric models that were superimposed on nongrowing structures in the anterior cranial base to determine anatomic changes during treatment. Results: The effect of the intermaxillary elastic forces was throughout the nasomaxillary structures. All 6 patients showed improvements in the skeletal relationship, primarily through maxillary advancement with little effect on the dentoalveolar units or change in mandibular position. Conclusions: The use of intermaxillary forces applied to temporary anchorage devices appears to be a promising treatment method. (Am J Orthod Dentofacial Orthop 2010; 137: 274-84)
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Heymann, G. C., Cevidanes, L., Cornelis, M., De Clerck, H. J., & Tulloch, J. F. C. (2010). Three-dimensional analysis of maxillary protraction with intermaxillary elastics to miniplates. American Journal of Orthodontics and Dentofacial Orthopedics, 137(2), 274-284. https://doi.org/10.1016/j.ajodo.2009.07.009 (Original work published 2010)