Assessment of Position of Mandibular Canal in Relation to Mandibular Plane in Different Growth Patterns

Jump To References Section

Authors

  • Department of Orthodontics, Swargiya Dadasaheb Kalmegh Smruti Dental College & Hospital, Nagpur 441110 ,IN
  • Department of Orthodontics, VSPM Dental College, Nagpur ,IN
  • Senior Resident, Palika Hospital, New Delhi ,IN
  • Department of Orthodontics, Swargiya Dadasaheb Kalmegh Smruti Dental College & Hospital, Nagpur 441110 ,IN
  • Department of Orthodontics, Swargiya Dadasaheb Kalmegh Smruti Dental College & Hospital, Nagpur 441110 ,IN

Keywords:

Mandibular Canal, Morphology, Curvature
Orthodontics

Abstract

Objectives: To evaluate the position and curvature of mandibular canal in relation to mandibular plane in horizontal (HG), average (AG) and vertical (VG) growth patterns.

Methods: 100 lateral cephalograms were screened & analysed from amongst patient's records
available in the institution. The growth pattern was assessed by FMA angle, Y-Axis, SN-Go-Gn angle and Jaraback's ratio, on the basis of these values, a sample was selected of 20 lateral cephalographs each in horizontal, average and vertical growth pattern. Rickett's Xi point was identified and mandibular canal was traced on each lateral cephalogram using Xi point which denotes the origin of mandibular canal. Distance between, Gonial point to Xi point, Mental foramen to mandibular plane (MFeM), Mandibular foramen to pterygoid vertical (XiePTV) and fromdeepest point on mandibular canal to mandibular plane (MceM) were measured to evaluate the position and curvature of mandibular canal in different growth patterns.

Results: It was observed that, the distance from gonial point to mandibular foramen, mental
foramen to mandibular border, mandibular foramen to pterygoid vertical was increased in
horizontal growth pattern i.e., 22.05 mm ± 1.82, 15.12 mm ± 1.06, 57.20 mm ± 1.23, whereas
it was reduced in vertical growth pattern i.e., 14.90 mm ± 1.55, 8.84 mm ± 1.41,
47.95 mm ± 2.25 respectively. Depth of curvature of mandibular canal was increased in
horizontal growth pattern, 22.25 mm ± 4.89; while it was reduced in vertical growth pattern
i.e., 16.32 mm ± 1.18.

Conclusions: The findings of this study showed that the position and curvature of the
mandibular canal reflect the outer morphology and growth pattern of the mandible.

Published

2018-09-10

How to Cite

Hazarey, P. V., Hazarey, A., Babbar, K., Kharche, A., & Chachada, A. (2018). Assessment of Position of Mandibular Canal in Relation to Mandibular Plane in Different Growth Patterns. Journal of Pierre Fauchard Academy (India Section), 29(1), 32–35. Retrieved from https://informaticsjournals.co.in/index.php/jpfa/article/view/22197

Issue

Section

Original Articles

 

References

Bjork A. Prediction of mandibular growth rotation. Am J Orthod. 1969;55:585-599.

Chavez-Lomeli ME, Mansilla Lory J, Pompa JA, Kjí¦r I. The human mandibular canal arises from three separate canals innervating different tooth groups. J Dent Res. 1996;75, 1540-1540.

Kjí¦r I. Formation and early prenatal location of the human mental foramen. Scand J Dent Res. 1989;97:1-7.

Ricketts RM. A principle of archial growth of the mandible. Angle Orthod. 1972;42:368-386.

Gowda RS, Raghunath N, Sahoo KC, Shivlinga BM. Comparative study of mandibular morphology in patients with hypodivergent and hyperdivergent growth patterns: a cephalometric study. Jour Indian Orthod Sct. 2013;47:377-438.

Palsson SR, Kjí¦r I. Morphology of the mandibular canal and the angulation between the mandibular and mental canals in dry skulls. Eur J Orthod. 2009;31:59-63.

Blaeser BF, August MA, Donoff RB, Kaban LB, Dodson TB. Panoramic radiographic risk factors for inferior alveolar nerve injury after third molar extraction. J Oral Maxillofac Surg. 2003;61:417-421.

Brown DC. Cross-sectional Mandibular Morphology in High, Average, and Low Angle Subjects. San Francisco, USA: University of California; 2006:126-127.

Swasty D, Lee J, Huang JC, et al. Cross-sectional human mandibular morphology as assessed in vivo by cone-beam computed tomography in patients with different vertical facial dimensions. Am J Orthod Dentofac Orthop. 2011;139:e377-e389.