Abstract
In this manuscript, the authors have studied the Disc Displacement (DD) status of patients with acute Closed Lock (CL) to determine differences between DD with Reduction (DDwR) and DD without Reduction (DDwoR). Among the acute CL patients who visited our hospital within 2 weeks of the onset of CL, we studied 10 patients whose CL was released (DDwR) and 13 patients whose CL was not released (DDwoR). The DDwoR group was significantly older than the DDwR group. Although the mouth opening distance was significantly greater in the DDwoR group than in the DDwR group, the two groups were identical in the duration of CL. Sagittal MRI images showed no significant differences between the two groups in disc length and disc thickness (anterior band, intermediate zone, and posterior band). Multisection sagittal and coronal images identified lateral DD in 7 of the 10 patients in the DDwR group, although no specific direction of the DD was observed in the DDwoR group. Furthermore, deformation of the medial disc was common in the DDwoR group but uncommon in the DDwR group.
Highlights
Closed Lock (CL) caused by Disc Displacement without Reduction (DDwoR) of the Temporomandibular Joint (TMJ) is characterized by various clinical symptoms, including painful TMJ and limited mouth opening
Diagnoses based on Magnetic Resonance Imaging (MRI) in patients with Temporomandibular Joint Disorder (TMD) tend to more closely correlate with clinical symptoms [5]; accurately ascertaining the complete condition of disc position is crucial for the prognosis and evaluation of therapeutic outcomes [6]
We found no significant difference in CL duration between the DD without Reduction (DDwoR) group
Summary
Closed Lock (CL) caused by Disc Displacement without Reduction (DDwoR) of the Temporomandibular Joint (TMJ) is characterized by various clinical symptoms, including painful TMJ and limited mouth opening. Diagnoses based on Magnetic Resonance Imaging (MRI) in patients with Temporomandibular Joint Disorder (TMD) tend to more closely correlate with clinical symptoms [5]; accurately ascertaining the complete condition of disc position is crucial for the prognosis and evaluation of therapeutic outcomes [6]. Our study investigated differences in the direction of DD based on the multisection MRI analysis of the sagittal and coronal planes. The goal was to determine differences in treatment outcomes, including MM, for unlocking in patients with early (acute) Closed Lock (CL)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
