Difference of Vertical Mandibular Symmetry Based on Mandibular Growth Pattern in Orthodontic Patients

DOI

10.2991/idcsu-17.2018.25How to use a DOI?

Keywords

Vertical mandibular symmetry, mandibular growth pattern, condyle asymmetry

Abstract

Mandibular asymmetry presents a problem when disruption in the balance of the size, shape and arrangement of facial tissue occurs. The highest growth potential of the mandible is in the condyle region and may affect the growth pattern of the mandible. The aim of this study is to analyze the vertical mandibular symmetry based on mandibular growth pattern. This is an analytic study with cross-sectional design on 79 pre-treatment panoramic radiographs and lateral cephalometry of orthodontic patients at RSGMP FKG USU at age 18 and above with complete dentition till second molar. The vertical mandibular symmetry based on Habets' method modified by Kjellberg on condylar asymmetry index. Mandibular growth pattern was determined by measuring mandibular plane to cranial base with Steiner analysis. The difference of vertical mandibular asymmetry and mandibular growth pattern was analyzed by Pearson's Chi-square analysis. There was 57.0% (n = 45) samples had symmetry condyles while 43.0% (n = 34) samples had asymmetry condyles. In a normal vertical mandibular growth 34.2% (n = 27) of the samples had a symmetry condyle and 21.5% (n = 17) of the samples had an asymmetric condyle. Whereas in abnormal vertical mandibular growth 22.8% (n = 18) samples had symmetric condyles and 21.5% (n = 17) samples had asymmetric condyles. There was no significant difference of vertical mandibular symmetry based on mandibular growth pattern (p = 0.379). Further research should consider the type of malocclusion which affected the condyle rotation in mandibular growth pattern.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Ervina Sofyanti
AU  - Lidya Irani Nainggolan
AU  - Thivassini A/P Ramakrishnan
PY  - 2018/02
DA  - 2018/02
TI  - Difference of Vertical Mandibular Symmetry Based on Mandibular Growth Pattern in Orthodontic Patients
BT  - Proceedings of the International Dental Conference of Sumatera Utara 2017 (IDCSU 2017)
PB  - Atlantis Press
SP  - 93
EP  - 95
SN  - 2468-5739
UR  - https://doi.org/10.2991/idcsu-17.2018.25
DO  - 10.2991/idcsu-17.2018.25
ID  - Sofyanti2018/02
ER  -