Dibbets, JMH

McNamara, JA

Trotman, CA

van der Weele, LT

English

The specific contribution of enlarged tonsils or adenoids to craniofacial growth remains unknown, and there is no agreement in the literature as to the significance of lip posture. This study assessed the separate associations of lip posture, sagittal airway size, and tonsil size with selected cephalometric measures. Clinical and cephalometric data of 207 children who presented for evaluation of tonsil and/or adenoid problems were evaluated. Multiple linear regression was used to assess the linear relationship between each of the three parameters and the cephalometric dependent variables. Open lip posture, reduced sagittal airway, and large tonsils were each associated statistically with a characteristic but different skeletal configuration. This association was proportional. Specifically, a more open lip posture was associated with a more backwardly rotated face and larger lower facial height. Reduced sagittal airway size was associated with en bloc backward relocation of the maxilla and mandible. Because the sella-nasion dimension shortened proportionally, the SNA and SNB angles were not affected. Larger tonsils were associated with more forward relocation and rotation of the maxilla and mandible and increased SNA and SNB angles. Because each of the three parameters was associated proportionally with a different craniofacial morphology, it is concluded that lip posture, sagittal airway size, and tonsil size represent three different and unrelated phenomena with respect to their effects on craniofacial growth and form.</p

Dissertations of the University of Groningen

   University of GroningenAssociation of lip posture and the dimensions of the tonsils and sagittal airway with facialmorphologyTrotman, CA; McNamara, JA; Dibbets, JMH; van der Weele, LTPublished in:Angle OrthodontistIMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite fromit. Please check the document version below.Document VersionPublisher's PDF, also known as Version of recordPublication date:1997Link to publication in University of Groningen/UMCG research databaseCitation for published version (APA):Trotman, CA., McNamara, JA., Dibbets, JMH., & van der Weele, LT. (1997). Association of lip posture andthe dimensions of the tonsils and sagittal airway with facial morphology. Angle Orthodontist, 67(6), 425-432.CopyrightOther than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of theauthor(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons).The publication may also be distributed here under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license.More information can be found on the University of Groningen website: https://www.rug.nl/library/open-access/self-archiving-pure/taverne-amendment.Take-down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediatelyand investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons thenumber of authors shown on this cover page is limited to 10 maximum.Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020Downloaded from http://meridian.allenpress.com/angle-orthodontist/article-pdf/67/6/425/1371924/0003-3219(1997)067_0425_aolpat_2_3_co_2.pdf by guest on 02 April 2020

Association of lip posture and the dimensions of the tonsils and sagittal airway with facial morphology

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Association of lip posture and the dimensions of the tonsils and sagittal airway with facial morphology

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