Changes in Disc Position, Disc Length, and Condylar Height in the Temporomandibular Joint With Anterior Disc Displacement: A Longitudinal Retrospective Magnetic Resonance Imaging Study
Changes in Disc Position, Disc Length, and Condylar Height in the Temporomandibular Joint With Anterior Disc Displacement: A Longitudinal Retrospective Magnetic Resonance Imaging Study
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DOI：
10.1016/j.joms.2011.02.038
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发表时间：
2011-11-01
影响因子：
1.9
通讯作者：
Yang, Chi
中科院分区：
文献类型：
--
作者：
Cai, Xie-Yi;Jin, Jia-Min;Yang, Chi
目的：为了定量评估的变化，相对于髁突，椎间盘长度，髁突高度，与磁共振成像的颞下颌关节盘前移位的患者谁没有收到任何treatmentplanning.Patients和方法：本研究包括62例83关节。在初次和随访时，通过颞下颌关节的磁共振成像扫描，对关节盘相对于髁突的位置、关节盘长度和髁突高度进行定量评估。学生t检验被用来评估统计学意义的变化。结果：平均年龄在第一次访问是30.4岁。平均随访时间为10.9个月。初次访视时，39个关节显示椎间盘移位伴复位。其中27个关节在随访后发生了椎间盘移位而未复位。平均椎间盘位置相对于髁的变化从5.28到6.73毫米，而平均椎间盘长度从8.31到6.91毫米，平均conclylar高度从5.21到4.65毫米。差异都有统计学意义。结论：椎间盘可能会变得更加向前移位和缩短，髁高度会减少在其自然过程中。然而，需要更长时间随访的进一步分层研究。(C)2011年美国口腔颌面外科医师协会J Oral Maxillofac Surg 69：e340-e346，2011
Purpose: To quantitatively assess the changes in disc position relative to the condyle, disc length, and condylar height, with magnetic resonance imaging in patients with anterior disc displacement of the temporomandibular joint who had received no treatment, to provide useful information regarding treatment planning.Patients and Methods: The study included 83 joints in 62 patients. The joints were assessed quantitatively for the disc position relative to the condyle, disc length, and condylar height on magnetic resonance imaging scans of the temporomandibular joint at initial and follow-up visits. Student t tests were used to assess the statistical significance of the changes.Results: The mean age at first visit was 30.4 years. The mean follow-up interval was 10.9 months. Thirty-nine joints were shown to have disc displacement with reduction at the initial visit. Of these joints, 27 changed to having disc displacement without reduction after follow-up. The mean disc position relative to the condyle changed from 5.28 to 6.73 mm, whereas the mean disc length changed from 8.31 to 6.91 mm and the mean conclylar height from 5.21 to 4.65 mm. Differences were all statistically significant.Conclusions: The disc would likely become more anteriorly displaced and shortened and the condylar height would decrease during its natural course. However, further stratified studies with longer follow-up are necessary. (C) 2011 American Association of Oral and Maxillofacial Surgeons J Oral Maxillofac Surg 69:e340-e346, 2011