下颌骨不对称的影像学评估。
Radiographic assessment of asymmetry of the mandible.
作者信息
Westesson P L, Tallents R H, Katzberg R W, Guay J A
机构信息
Department of Radiology, University of Rochester Medical Center, NY.
出版信息
AJNR Am J Neuroradiol. 1994 May;15(5):991-9.
PURPOSE
To assess the relationship between mandibular asymmetry and disorders of the temporomandibular joint.
METHODS
We used advanced imaging of the temporomandibular joint to distinguish different causes of mandibular asymmetry. MR imaging and arthrography were applied to the temporomandibular joints of 11 patients presenting with mandibular asymmetry.
RESULTS
Condyle hyperplasia was identified as the cause of the asymmetry in 5 patients. In the other 6 patients the mandibular condyle was normal on the long side, but the short side of the face demonstrated a small condyle head, short condyle neck associated with disk displacement, internal derangement, and degenerative joint disease of the temporomandibular joint.
CONCLUSIONS
These observations suggest that both condyle hyperplasia on the long side of the mandible and disk displacement and degenerative joint disease of the temporomandibular joint on the short side can cause mandibular asymmetry. It was concluded that MR imaging or arthrography can be valuable for understanding the cause of mandibular asymmetry and be effective in treatment planning.
目的
评估下颌不对称与颞下颌关节紊乱之间的关系。
方法
我们采用颞下颌关节的先进成像技术来区分下颌不对称的不同原因。对11例下颌不对称患者的颞下颌关节进行了磁共振成像（MR成像）和关节造影检查。
结果
5例患者的不对称原因被确定为髁突增生。另外6例患者中，面部较长一侧的下颌髁突正常，但较短一侧显示髁突头部较小、髁突颈部较短，并伴有盘状移位、关节内紊乱和颞下颌关节退行性关节病。
结论
这些观察结果表明，下颌较长一侧的髁突增生以及较短一侧的颞下颌关节盘移位和退行性关节病均可导致下颌不对称。得出的结论是，MR成像或关节造影对于了解下颌不对称的原因具有重要价值，并且在治疗计划制定中有效。
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