Journal of Emergency Health Care
Formerly known as: International Journal of Medical Investigation
Volume 8, Issue 4 (12-2019)
J Emerg Health Care 2019, 8(4): 51-62 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Yassaei S, Ezoddini F, Sasani A, Kordi S. Cephalometric Association of Mandibular Size/Length to the Natural Head Position. J Emerg Health Care 2019; 8 (4) :51-62
URL: http://intjmi.com/article-1-447-en.html
URL: http://intjmi.com/article-1-447-en.html
Faculty of Dentistry, , Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Abstract: (4725 Views)
Introduction: to determine the head posture in anterior-posterior skeletal malocclusion caused by mandibular growth problems.
Methods: In this analytical study, Lateral cephalometric images were taken from 66 patients and categorized into three classes of malocclusion, including classes I (n=22), II (n=25) and III (n=19). The collected data was analyzed by SPSS17 software using ANOVA, independent t-test and Kruskal-Wallis. This study was done in orthodontics department of Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, in 2017.
Findings: The craniocervical angles were significantly lower in men than women (P <0.05). The OPT/CVT angle, which represents cervical curvature, was significantly lower in men than women (P = 0.001). Regarding to gender and type of malocclusion, craniovertical and craniohorizontal angles were significantly lower in classes II and III male patients than those in class I (P<0.05).
Conclusion: class II men had a tendency to move up their head. On the other hand, class ΙΙΙ male patients turned their head and neck upward despite the forward position of the mandible. The mandibular length may have more effect on the patient's head position than neck position.
Methods: In this analytical study, Lateral cephalometric images were taken from 66 patients and categorized into three classes of malocclusion, including classes I (n=22), II (n=25) and III (n=19). The collected data was analyzed by SPSS17 software using ANOVA, independent t-test and Kruskal-Wallis. This study was done in orthodontics department of Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, in 2017.
Findings: The craniocervical angles were significantly lower in men than women (P <0.05). The OPT/CVT angle, which represents cervical curvature, was significantly lower in men than women (P = 0.001). Regarding to gender and type of malocclusion, craniovertical and craniohorizontal angles were significantly lower in classes II and III male patients than those in class I (P<0.05).
Conclusion: class II men had a tendency to move up their head. On the other hand, class ΙΙΙ male patients turned their head and neck upward despite the forward position of the mandible. The mandibular length may have more effect on the patient's head position than neck position.
References
1. 1. Cooke MS, Orth D. Five-year reproducibility of natural head posture: a longitudinal study. Am J Orthod Dentofacial Orthop. 1990;97(6):489-94.
2. Peng L, Cooke MS. Fifteen-year reproducibility of natural head posture: a longitudinal study. Am J Orthod Dentofacial Orthop. 1999;116(1):82-85.
3. Cooke MS, Orth D, Wei SH. The reproducibility of natural head posture: a methodological study. Am J Orthod Dentofacial Orthop. 1988;93(4):280-88.
4. Solow B, Barrett M, Brown T. Craniocervical morphology and posture in Australian Aboriginals. Am J Phys Anthropol. 1982;59(1):33-45.
5. Huggare J, Kylämarkula S. Morphology of the first cervical vertebra in children with enlarged adenoids. Eur J Orthod. 1985;7(2):93-96.
6. Hellsing E, Reigo T, McWilliam J, Spangfort E. Cervical and lumbar lordosis and thoracic kyphosis in 8, 11 and 15-year-old children. Eur J Orthod. 1987;9(2):129-38.
7. D’Attilio M, Epifania E, Ciuffolo F, et al. Cervical lordosis angle measured on lateral cephalograms; findings in skeletal class II female subjects with and without TMD: a cross sectional study. CRANIO® 2004;22(1):27-44.
8. Vélez A, Restrepo C, Peláez‐vargas A, et al. Head posture and dental wear evaluation of bruxist children with primary teeth. J Oral Rehabil. 2007;34(9):663-70.
9. Proffit WR, White RP, Sarver DM. Physiologic Responses to Treatment and Postsurgical Stability. St. Louis: Mosby; 2003.
10. Bjork A. Some biological aspects of prognathism and occlusion of the teeth. Angle Orthod. 1951;21(1):3-27.
11. Marcotte MR. Head posture and dentofacial proportions. Angle Orthod. 1981;51(3):208-13.
12. Hedayati Z, Paknahad M, Zorriasatine F. Comparison of natural head position in different anteroposterior malocclusions. J Dent. 2013;10(3):210.15
13. Cho D, Choi D-S, Jang I, Cha B-K. Changes in natural head position after orthognathic surgery in skeletal Class III patients. Am J Orthod Dentofacial Orthop. 2015;147(6):747-54.
14. Lin X, Edwards SP. Changes in natural head position in response to mandibular advancement. Br J Oral Maxillofac Surg. 2017;55(5): 471-475
15. Solow B, Sonnesen L. Head posture and malocclusions. Eur J Orthod. 1998;20(6):685-93.
16. Tecco S, Farronato G, Salini V, et al. Evaluation of cervical spine posture after functional therapy with FR-2: a longitudinal study. CRANIO® 2005;23(1):53-66.
17. Nik TH, Aciyabar PJ. 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):161-66.
18. Rakosi T, Jonas I, Graber TM. Orthodontic diagnosis: Thieme; 1993.
19. Yassaei S, Sorush M. Changes in hyoid position following treatment of Class II division1 malocclusions with a functional appliance. J Clin Pediatr Dent. 2008;33(1):81-4.
20. Salehi P, Oshagh M, Aleyasin Z, Pakshir H. The effects of forehead and neck position on esthetics of class I, II and III profiles. Int J Esthet Dent. 2014;9(3):412-25.
21. Huggare JÅV. Head posture and cervicovertebral anatomy as mandibular growth predictors. Eur J Orthod. 1994;16(3):175-80.
22. Arntsen T, Sonnesen L. Cervical vertebral column morphology related to craniofacial morphology and head posture in preorthodontic children with Class II malocclusion and horizontal maxillary overjet. Am J Orthod Dentofacial Orthop. 2011;140(1):e1-e7.
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |