Objective
To evaluate the volume and position of the temporomandibular joint structures, specifically
the glenoid fossa and the condylar head, in patients with facial asymmetry.
Study Design
Fifty-six adult patients were divided into two groups—asymmetry group and control
group—based on the severity of the mandibular asymmetry, as seen on their orthopantomograms.
The volumes and positions of the bilateral temporomandibular joint components were
measured by using computed tomography images and a three-dimensional analysis program.
Each of the variables was compared between and within the groups.
Results
The volumes of the condyle and the glenoid fossa on the side of the smaller condyle
were significantly smaller in the asymmetry group (P < .05) than in the control group. The volumetric ratios of the glenoid fossa and
the joint space to the condyle were also significantly higher on that side (P < .001). The distance of the uppermost point of the glenoid fossa from the midaxial
plane in the smaller condyle was significantly shorter (P < .05) only in the asymmetry group.
Conclusions
When evaluating mandibular asymmetry, the volume of the glenoid fossa and the volume
and vertical position of the condylar head need to be considered in addition to length
or width of the condylar head.
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References
- The relationship between frontal facial morphology and occlusal force in orthodontic patients with temporomandibular disorder.J Oral Rehabil. 2000; 27: 413-421
- Correlation between cranial base morphology and the position of the glenoid fossa in patients with facial asymmetry.J Craniofac Surg. 2014; 25: 1190-1194
- The shape of the glenoid fossa affects the growth of the mandible.Eur J Orthod. 1988; 10: 249-254
- Neuromuscular and skeletal adaptations to altered function in the orofacial region.Am J Orthod. 1973; 64: 578-606
- Mandibular asymmetry: a three-dimensional quantification of bilateral condyles.Head Face Med. 2013; 9: 42
- [A cone-beam CT study on morphology and position of condylar processes in skeletal Class III adult patients with mandibular deviation].Zhonghua Kou Qiang Yi Xue Za Zhi. 2014; 49 ([in Chinese]): 403-407
- Computed tomography evaluation of the temporomandibular joint in Class I malocclusion patients: condylar symmetry and condyle-fossa relationship.Am J Orthod Dentofacial Orthop. 2009; 136: 192-198
- Computed tomography evaluation of temporomandibular joint alterations in patients with class II division 1 subdivision malocclusions: condyle-fossa relationship.Am J Orthod Dentofacial Orthop. 2004; 126: 48-52
- Computed tomography evaluation of the temporomandibular joint in Class II Division 1 and Class III malocclusion patients: condylar symmetry and condyle-fossa relationship.Am J Orthod Dentofacial Orthop. 2009; 136: 199-206
- Volumetric analysis of the mandibular condyle using cone beam computed tomography.Eur J Radiol. 2012; 81: 1812-1816
- Accuracy of measurements of mandibular anatomy in cone beam computed tomography images.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007; 103: 534-542
- Quantification of condylar resorption in temporomandibular joint osteoarthritis.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010; 110: 110-117
- Condylar volume and condylar area in class I, class II and class III young adult subjects.Head Face Med. 2012; 8: 34
- Condyle and fossa shape in Class II and Class III skeletal patterns: a morphometric tomographic study.Am J Orthod Dentofacial Orthop. 2005; 128: 337-346
- Idiopathic condylar resorption: diagnosis, treatment protocol, and outcomes.Am J Orthod Dentofacial Orthop. 1999; 116: 667-677
- The orthopantomogram, an aid in diagnosis of temporomandibular joint problems. II. The vertical symmetry.J Oral Rehabil. 1988; 15: 465-471
- Cranial sutures as intramembranous bone growth sites.Dev Dyn. 2000; 219: 472-485
- The growth of the mandible.Am J Orthod. 1947; 33: 30-35
- The temporomandibular joint: a morphologic study on a human autopsy material.Acta Odontol Scand. 1971; 29: 349-384
- Morphology of the condyles and mandibular fossa as seen by computed tomography.J Prosthet Dent. 1990; 63: 77-82
- Reproducibility of asymmetry measurements of the mandible in three-dimensional CT imaging.Korean J Orthod. 2008; 38: 314-327
- Validity of midsagittal reference planes constructed in 3 D CT images.Korean J Orthod. 2007; 37: 182-191
- Asymmetry of the human facial skeleton.Angle Orthod. 1975; 45: 125-129
- A posteroanterior cephalometric evaluation of craniofacial asymmetry.Angle Orthod. 1967; 37: 205-211
- Facial skeleton remodeling due to temporomandibular joint degeneration: an imaging study of 100 patients.AJR Am J Roentgenol. 1990; 155: 373-383
- Glenoid fossa position in different facial types: a cephalometric study.Br J Orthod. 1997; 24: 55-59
- Glenoid fossa position in Class III malocclusion associated with mandibular protrusion.Am J Orthod Dentofacial Orthop. 2009; 135: 438-441
Article info
Publication history
Published online: August 31, 2016
Accepted:
August 20,
2016
Received in revised form:
July 19,
2016
Received:
March 28,
2016
Footnotes
This study was supported by a faculty research grant from the Yonsei University College of Dentistry (6-2007-0004).
Identification
Copyright
© 2016 Elsevier Inc. All rights reserved.
