Giraudeau Anne, Jeany Marion, Ehrmann Elodie, Déjou Jacques, Ouni Imed, Orthlieb Jean-Daniel
a Faculté d'Odontologie , Aix Marseille Université , Marseille 13005 , France.
b Faculté d'Odontologie , Université de Nice Sophia-Antipolis , Nice 06357 , France.
Cranio. 2017 Mar;35(2):86-93. doi: 10.1080/08869634.2016.1149291. Epub 2016 Mar 22.
The purpose of this retrospective study is to evaluate a clinical diagnostic sign for disc displacement without reduction (DDWR), the absence of additional condylar translation during opening compared with protrusion.
Thirty-eight electronic axiographic and magnetic resonance imaging (MRI) examinations of the TMJ were analyzed in order to compare the opening/protrusion ratio of condylar translation between non-painful DDWR and non-DDWR.
According to the Mann-Whitney U test, the opening/protrusion ratio in non-painful DDWR differs significantly from non-DDWR (p < 0.0001).
Among non-painful DDWR, there is no additional condylar translation during opening in comparison with protrusion, and this is probably also the case for DDWR without limited opening, which is a subtype that has not been validated by the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Comparative condylar palpation can analyze this sign, and therefore, further comparative investigations between MRI and clinical examination are needed to validate the corresponding clinical test.
本回顾性研究旨在评估一种用于不可复性盘移位（DDWR）的临床诊断体征，即与前伸相比，开口时髁突无额外平移。
分析38例颞下颌关节的电子轴位片和磁共振成像（MRI）检查结果，以比较无痛性DDWR与非DDWR之间髁突平移的开口/前伸比值。
根据曼-惠特尼U检验，无痛性DDWR的开口/前伸比值与非DDWR有显著差异（p < 0.0001）。
在无痛性DDWR中，与前伸相比，开口时髁突无额外平移，对于无开口受限的DDWR可能也是如此，这是一种尚未被颞下颌关节紊乱病诊断标准（DC/TMD）验证的亚型。髁突对比触诊可分析此体征，因此，需要进一步进行MRI与临床检查之间的对比研究以验证相应的临床检查。
