Abstract
Introduction: This study was conducted to measure the dimensional changes in the cranial base and the mandible in patients with facial asymmetry and mandibular prognathism, and to examine the morphologic relationship between asymmetries of the cranial base and the mandible. Methods: The patients were 60 adults with mandibular prognathism, divided into a symmetry group (menton deviation,<2 mm; n 5 30) and an asymmetry group (menton deviation, >4 mm; n 5 30) according to the degree of menton deviation. Three-dimensional computed tomography scans were obtained with a spiral scanner. Landmarks were designated on the reconstructed 3-dimensional surface models. Linear, angular, and volumetric measurements of the cranial base and mandibular variables were made. Results: In the asymmetry group, the hemi-base, anterior cranial base, and middle cranial base volumes were significantly larger (P <0.01), and crista galli to sphenoid, sphenoid to petrous ridge, anterior clinoid process to petrous ridge, and vomer to petrous ridge lengths were significantly longer (P <0.05) on the nondeviated side than on the deviated side. Menton deviation was significantly correlated with the difference in hemi-base volume, and ramal volume was significantly correlated with the difference in hemi-base and middle cranial base volumes between the nondeviated and deviated sides (P<0.05). Conclusions: In patients with facial asymmetry and mandibular prognathism, cranial base volume increased on the nondeviated side and was also correlated with mandibular asymmetry.
| Original language | English |
|---|---|
| Pages (from-to) | 330-340 |
| Number of pages | 11 |
| Journal | American Journal of Orthodontics and Dentofacial Orthopedics |
| Volume | 144 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2013 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Orthodontics
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Morphologic relationship between the cranial base and the mandible in patients with facial asymmetry and mandibular prognathism. / Kim, Sung Jin; Lee, Keejoon; Lee, Sang Hwy; Baik, Hyoung Seon.
In: American Journal of Orthodontics and Dentofacial Orthopedics, Vol. 144, No. 3, 01.01.2013, p. 330-340.Research output: Contribution to journal › Article
TY - JOUR
T1 - Morphologic relationship between the cranial base and the mandible in patients with facial asymmetry and mandibular prognathism
AU - Kim, Sung Jin
AU - Lee, Keejoon
AU - Lee, Sang Hwy
AU - Baik, Hyoung Seon
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Introduction: This study was conducted to measure the dimensional changes in the cranial base and the mandible in patients with facial asymmetry and mandibular prognathism, and to examine the morphologic relationship between asymmetries of the cranial base and the mandible. Methods: The patients were 60 adults with mandibular prognathism, divided into a symmetry group (menton deviation,<2 mm; n 5 30) and an asymmetry group (menton deviation, >4 mm; n 5 30) according to the degree of menton deviation. Three-dimensional computed tomography scans were obtained with a spiral scanner. Landmarks were designated on the reconstructed 3-dimensional surface models. Linear, angular, and volumetric measurements of the cranial base and mandibular variables were made. Results: In the asymmetry group, the hemi-base, anterior cranial base, and middle cranial base volumes were significantly larger (P <0.01), and crista galli to sphenoid, sphenoid to petrous ridge, anterior clinoid process to petrous ridge, and vomer to petrous ridge lengths were significantly longer (P <0.05) on the nondeviated side than on the deviated side. Menton deviation was significantly correlated with the difference in hemi-base volume, and ramal volume was significantly correlated with the difference in hemi-base and middle cranial base volumes between the nondeviated and deviated sides (P<0.05). Conclusions: In patients with facial asymmetry and mandibular prognathism, cranial base volume increased on the nondeviated side and was also correlated with mandibular asymmetry.
AB - Introduction: This study was conducted to measure the dimensional changes in the cranial base and the mandible in patients with facial asymmetry and mandibular prognathism, and to examine the morphologic relationship between asymmetries of the cranial base and the mandible. Methods: The patients were 60 adults with mandibular prognathism, divided into a symmetry group (menton deviation,<2 mm; n 5 30) and an asymmetry group (menton deviation, >4 mm; n 5 30) according to the degree of menton deviation. Three-dimensional computed tomography scans were obtained with a spiral scanner. Landmarks were designated on the reconstructed 3-dimensional surface models. Linear, angular, and volumetric measurements of the cranial base and mandibular variables were made. Results: In the asymmetry group, the hemi-base, anterior cranial base, and middle cranial base volumes were significantly larger (P <0.01), and crista galli to sphenoid, sphenoid to petrous ridge, anterior clinoid process to petrous ridge, and vomer to petrous ridge lengths were significantly longer (P <0.05) on the nondeviated side than on the deviated side. Menton deviation was significantly correlated with the difference in hemi-base volume, and ramal volume was significantly correlated with the difference in hemi-base and middle cranial base volumes between the nondeviated and deviated sides (P<0.05). Conclusions: In patients with facial asymmetry and mandibular prognathism, cranial base volume increased on the nondeviated side and was also correlated with mandibular asymmetry.
UR - http://www.scopus.com/inward/record.url?scp=84886391529&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84886391529&partnerID=8YFLogxK
U2 - 10.1016/j.ajodo.2013.03.024
DO - 10.1016/j.ajodo.2013.03.024
M3 - Article
C2 - 23992805
AN - SCOPUS:84886391529
VL - 144
SP - 330
EP - 340
JO - American Journal of Orthodontics and Dentofacial Orthopedics
JF - American Journal of Orthodontics and Dentofacial Orthopedics
SN - 0889-5406
IS - 3
ER -