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The Relationship Between Cervical Column Curvature and Sagittal Position of the Jaws: Using a New Method for Evaluating Curvature


Tahereh Hosseinzadeh Nik 1 , * , Pejman Janbaz Aciyabar 2


1 Department of Orthodontics, Faculty of Dentistry and Dental Research Center, Tehran University of Medical Sciences, hoseinit@tums.ac.ir, Iran

2 Private Practice, IR Iran


Iranian Journal of Radiology: 8 (3); 161-166
Published Online: November 25, 2011
Article Type: Research Article
Received: May 12, 2010
Accepted: September 18, 2010




Background: For determining the cervical column curvature, the curve fitting method is the most precise method, but using this method in clinic seems to be difficult if not possible. In this study, we used a modification of cervical column inclination angle that has been already mentioned
Objectives: The aim of this study was to evaluate the posture and curvature of the cervical column introducing a modified constructed angle in order to evaluate the cervical column curvature in a relax position in relation to the jaws sagittal position.
Patients and Methods: The lateral cephalometries of patients with no anomaly were taken in the natural head position. The mean age of the patients was 13.49 years including 56 female and 44 male. Steiner and Wits analysis was used to evaluate the sagittal position of the jaws. Modified constructed CVT/HOR and OPT/HOR angles were used to evaluate the cervical column posture and curvature. Patients were classified into three groups according to the angle’s classification.
Results: The results showed a significant positive correlation between modified constructed angles and sagittal jaw relationships (P < 0.05). Besides, in class II patients, there was a significant correlation between OPT/HOR and parameters ANB and Wits (P < 0.05 and P < 0.01, respectively). Age could not affect the curvature and posture of the cervical column.
Conclusions: According to the result of this study using modified constructed angles may be a simple method for evaluation of the relation between cervical column curvature and sagittal position of the jaws. There is significant correlation between cervical column posture angles and parameters ANB and Wits in Cl. II patients.

  • Implication for health policy/practice/research/medical education:
    This article tries to evaluate correlation between the cervical column posture and dentofacial malocculsions with a simple geometrical method for practice.
  • Please cite this paper as:
    Hosseinzadeh Nik T, Janbaz Aciyabar P. The Relationship Between Cervical Column Curvature and Sagittal Position of the Jaws: Using a New Method for Evaluating Curvature. Iran J Radiol. 2011; 8(3):161-6. DOI: 10.5812/kmp.iranjradiol.17351065.3379

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Society of Radiology. Published by Kowsar M.P.Co. All rights reserved.


Cervical Vertebrae Dental Occlusion Jaw Relation Record

© 2011, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.
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