Magnetic resonance images of the temporomandibular joints of patients with acquired open bite
Magnetic resonance images of the temporomandibular joints of patients with acquired open bite
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DOI：
10.1016/j.tripleo.2004.10.020
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发表时间：
2005-06-01
影响因子：
--
通讯作者：
Shiau, YY
中科院分区：
文献类型：
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作者：
Chen, YJ;Shih, TTF;Shiau, YY
目标.据报道，获得性前牙开咬是髁突塌陷的结果，与炎症性TMJ疾病相关。然而，我们已经看到这样的错患者的髁突变化似乎与颞下颌关节退行性变相关的内部紊乱。本研究的目的是回顾这些患者的临床病史，并研究颞下颌关节MRI。从图像数据库中检索首次就诊时表现为后天性前牙开牙合的患者的TMJ MRI进行分析。回顾性收集了以内部紊乱为重点的临床病史。并对MRI显示的软、硬组织改变进行分析。所有患者都经历了常见的症状/体征的颞下颌关节内紊乱。所有受影响的颞下颌关节前移位的磁盘和退行性变化。髁突形态的水平破坏在这些患者中更常见。颞下颌关节退行性变和关节盘移位可能是导致后天性前牙开的原因之一。
Objectives. Acquired anterior open bites were reported as the consequence of condylar collapse, which was associated with inflammatory TMJ disorders. However, we have seen such malocclusion patients whose condylar changes seemed to be related to TMJ degeneration associated with internal derangement. The aims of this study were to review the clinical history and to study the TMJ MRI of these patients.Study design. TMJ MRIs of patients, who had presented acquired anterior open bite at first visit, were retrieved from the image database for the analysis. Clinical histories focused on internal derangement were collected retrospectively. The soft tissue and hard tissue changes disclosed by MRI were also studied.Results. All patients had experienced common signs/symptoms of TMJ internal derangement. All affected TMJs had anteriorly displaced disks and degenerative changes. Horizontally destructed condylar forms were seen significantly more frequently in these patients.Conclusion. TMJ degeneration associated with displaced disks might be a cause leading to the development of acquired anterior open bite.