Association between chewing side preference and MRI characteristics in patients with anterior disc displacement of the temporomandibular joint - 15/09/23
, Lin Liu b, # , Xiaoting Zhai a, b, # , Yan Wang c , Yifan Hu a, b , Xinyu Xu a, b , Hongbo Li b, ⁎ , Hua Jiang b Abstract |
Objective |
To compare the magnetic resonance imaging (MRI) characteristics in the anterior disc displacement (ADD) patients with and without chewing side preference (CSP).
Methods |
The MRI characteristics of the bilateral temporomandibular joint (TMJ) in 111 patients with ADD were retrospectively analysed. Based on the presence of CSP, all subjects were divided into the non-CSP group (NC group, N = 40) and CSP group (C group, N = 71). Based on the preferred chewing side in the C group, the patients were divided into ipsilateral and contralateral sides. The morphology, length, disc-condyle angle, and coordinate position of the disc and condyle of the bilateral TMJ were compared.
Results |
MRI examination showed a significant difference between ipsilateral and contralateral joint displacement in patients with CSP (P<0.05). In CSP patients, the disc length of the same side in the ipsilateral side was significantly shorter than the contralateral side (P<0.05). A significant difference in the Y-axis coordinates of the ipsilateral and contralateral discs was also found in patients with CSP (P<0.05). The disc displacement grade, morphology of the articular disc, ipsilateral disc length, and ipsilateral disc-condyle Y-axis distance were positively correlated with CSP (P<0.05).
Conclusion |
CSP is related to the shape of the articular disc and disc-condyle position in patients with ADD. CSP may aggravate the development of ADD.
Le texte complet de cet article est disponible en PDF.Keywords : Temporomandibular joint disorders, Temporomandibular joint disc, Magnetic resonance imaging
Plan
Vol 124 - N° 5
Article 101484- octobre 2023 Retour au numéro
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