Computerized ultrasonic axiographic evaluation of condylar movement in patients with internal derangement of the temporomandibular joint

Abstract

Objectives: To evaluate condylar movement during lateral excursion in individuals with internal derangement of the temporomandibular joint (TMJ) using ultrasonic axiography. Materials and Methods: A total of 34 patients with internal derangement of the TMJ and 34 participants in the control group were examined. Mandibular functional movement was recorded by ultrasonic axiography. Three-dimensional condylar movement was measured in the working and balancing condyles. Results: Significant differences in condylar movement were found between the two groups. In the group with internal derangement of the TMJ, the three-dimensional linear distances of the condylar path in a working condyle were greater than in the control group during lateral excursion. The speed of the balancing condyle in the returning path of lateral excursion was significantly greater in the group with internal derangement than in the control group. Conclusions: The results of the present study indicate that internal derangement of TMJ may affect the working and balancing condylar movements during lateral excursion.

Efficacy of stabilisation splint and low‐level laser therapy for patients with chronic closed lock from non‐reducible displaced temporo‐mandibular joint discs: A parallel randomised clinical trial

“…6,7 Patients may experience prolonged pain and disability that is referred to chronic closed lock (CCL), which causes chronic symptoms to become more refractory to traditional medical treatment approaches. 8,9 Currently, the best available evidence suggests that patients with DDwoR should be treated in acute stage as soon as possible with non-invasive conservative interventions including simple selfmanagement and early mandibular manipulation 4,10,11 and most will have a good prognosis with increasing mouth opening and decreasing pain intensity over time. 12 There is, however, a lack of understanding of how to make management decisions when patients present with chronic closed lock of DDwoR.…”

“…This results in pain and restricted mouth opening 6,7 . Patients may experience prolonged pain and disability that is referred to chronic closed lock (CCL), which causes chronic symptoms to become more refractory to traditional medical treatment approaches 8,9 …”

Imaging of the temporomandibular joint - contemporary clinical and radiological implications

“…Due to clinical implications, it is important to assess disc mobility during jaw movements. If the normal disc-condyle relationship is restored in the opened jaw position, this type is called disc dislocation with reduction (DDWR) (Figure 8); if not, it is called disc dislocation without reduction (DDWOR) (Figure 9) [39,40]. DDWOR may result in a locked joint, with complete restriction of movement [39].…”