Menezes A V, de Almeida S M, Bóscolo F N, Haiter-Neto F, Ambrosano G M B, Manzi F R
Oral Radiology, School of Dentistry of Piracicaba - UNICAMP, Brazil.
Dentomaxillofac Radiol. 2008 Jul;37(5):293-9. doi: 10.1259/dmfr/31850388.
Several image modalities have been used to assess the condylar position in the glenoid fossa. However, despite the development of more advanced techniques for imaging the temporomandibular joint (TMJ), the transcranial projection remains widely used in dentistry. The purpose of this study was to compare the condylar position in transcranial radiography (TRANS) with MRI.
70 matched pairs of TMJs (35 patients) who had undergone TRANS and MRI were evaluated. The TRANS scans were compared with the lateral, central and medial MRI scans, and the condylar position was assessed in the closed and open mouth position according to subjective and objective methods. The sensitivity, specificity and accuracy values were calculated for each group and Bowker's test was used to analyse the data.
There was no statistical significance between TRANS and MRI (P > 0.05). However, even though there were similar mean values between them, the comparison with the lateral image showed higher values, which might be due to TRANS representing the lateral one-third of the condyle.
It can be concluded that TRANS seems to be an acceptable method and its applicability as an adjunctive method in the condylar position should not be rejected.
已使用多种影像模态来评估髁突在关节窝中的位置。然而，尽管颞下颌关节（TMJ）成像技术有了更先进的发展，但经颅投照在牙科领域仍被广泛使用。本研究的目的是比较经颅放射摄影（TRANS）与MRI中髁突的位置。
对70对匹配的TMJ（35例患者）进行了TRANS和MRI检查并评估。将TRANS扫描与MRI的外侧、中央和内侧扫描进行比较，并根据主观和客观方法在闭口和开口位置评估髁突位置。计算每组的敏感性、特异性和准确性值，并使用Bowker检验分析数据。
TRANS和MRI之间无统计学意义（P>0.05）。然而，尽管它们之间的平均值相似，但与外侧图像的比较显示出更高的值，这可能是因为TRANS显示的是髁突外侧三分之一。
可以得出结论，TRANS似乎是一种可接受的方法，其作为髁突位置辅助方法的适用性不应被否定。
