caa a22 4500 44534783X CHVBK 20180317142834.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00056-011-0040-5 doi (NATIONALLICENCE)springer-10.1007/s00056-011-0040-5 Biomechanics of the mandible and growth extension [Elektronische Daten] [D. Ihlow, H. Dathe, J. Fanghänel, P. Proff, H. Nägerl, W. Hahn, D. Kubein-Meesenburg, K.M. Thieme] Biomechanik der Mandibula und Wachstumsstreckung Background and objective: One way of determining the direction of growth of the mandible is to consider the temporomandibular joint and movement of the mandible as a four-joint gear system, regarding growth then as an extension of the gear system. Our aim was to examine any correlations between the type of biomechanical growth extension and change in the maxilomandibular relation after ClassII therapy. Subjects and methods: A total of 130lateral cephalograms—before and after orthodontic treatment—were available from 65adolescent classII patients with open bite or deep bite. The two lateral cephalograms from each patient were superimposed on the occlusal plane. Cephalometric values and the vertical base point deviation were determined from biomechanical analyses, together with three distances and three angles. Results: No correlation between the cephalometric data and distances or angles were observed. Although there were no significant differences in the distances, we did note significant differences in all three angles (p < 0.05). Conclusion: If gear system extension during growth is considered, this can be interpreted as meaning that the occlusal plane of those patients with an initially open bite dropped during treatment, but that it rose in patients with an initially deep bite. Urban &amp; Vogel, Muenchen, 2011 Angle Class II nationallicence Open bite nationallicence Deep bite nationallicence Change in intermaxillary relationship nationallicence Constancy in biomechanical function nationallicence Growth extension nationallicence Temporomandibular joint nationallicence Angle-KlasseII nationallicence Offener Biss nationallicence Tiefer Biss nationallicence Bisslageveränderung nationallicence Biomechanische Funktionskonstanz nationallicence Wachstumsstreckung nationallicence Kiefergelenk nationallicence Ihlow D. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut Dathe H. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut Fanghänel J. Department of Orthodontics, University Hospital Regensburg, Regensburg, Germany aut Proff P. Department of Orthodontics, University Hospital Regensburg, Regensburg, Germany aut Nägerl H. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut Hahn W. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut Kubein-Meesenburg D. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut Thieme K.M. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie Springer-Verlag 72/5(2011-10-01), 358-370 1434-5293 72:5<358 2011 72 56 https://doi.org/10.1007/s00056-011-0040-5 text/html Onlinezugriff via DOI 1 article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00056-011-0040-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ihlow D. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut NATIONALLICENCE 700 1- Dathe H. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut NATIONALLICENCE 700 1- Fanghänel J. Department of Orthodontics, University Hospital Regensburg, Regensburg, Germany aut NATIONALLICENCE 700 1- Proff P. Department of Orthodontics, University Hospital Regensburg, Regensburg, Germany aut NATIONALLICENCE 700 1- Nägerl H. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut NATIONALLICENCE 700 1- Hahn W. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut NATIONALLICENCE 700 1- Kubein-Meesenburg D. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut NATIONALLICENCE 700 1- Thieme K.M. Department of Orthodontics, Georg August University Goettingen, Robert-Koch-Str. 40, 37099, Goettingen, Germany aut NATIONALLICENCE 773 0- Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie Springer-Verlag 72/5(2011-10-01), 358-370 1434-5293 72:5<358 2011 72 56 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer