Comparative study of normal condyle and temporomandibular joint prosthesis movement during mouth opening by dynamic magnetic resonance imaging and computed tomography.

Background: To analyze and compare the trajectory of condylar motion during mouth opening in normal volunteers and patients after total joint replacement (TJR) of the temporomandibular joint (TMJ).

Methods: Condylar movement during mouth opening was recorded by dynamic magnetic resonance imaging (MRI) for volunteers with normal TMJs and dynamic computed tomography (CT) for patients after TMJ TJR. Trajectories of the points selected every 5 mm from the superior point of the condyle (P) along its axis to the mandibular angle (P) were recorded.

Comparison between disc repositioning by open surgery versus occlusal splint in the treatment of temporomandibular joint anterior disc displacement without reduction: A retrospective cohort trial of short-term results.

To compare the short-term clinical results between disc repositioning by open surgery (DROS) and stabilization splint (SS) for the treatment of temporomandibular joint (TMJ) anterior disc displacement without reduction (ADDwoR). Patients diagnosed with ADDwoR by magnetic resonance imaging (MRI) and treated by either DROS or SS from June 2020 to January 2022 were reviewed. They were selected to match the baseline data before each treatment and then to compare the clinical results including maximum interincisal opening (MIO), protrusion and lateral excursion distances, visual analogue scale (VAS) scores of pain, diet, and quality of life (QoL) and their effective rates, total satisfaction rate after 3 and 6 months of the treatment, and between the 2 treatment methods.

Preliminary evaluation of Kovacs digital occlusal splint in the treatment of temporomandibular disorders: A single-centre, cross-sectional study.

Background: Digital occlusal splint is a novel approach in the treatment of temporomandibular disorders (TMD) and there is a lack of evaluation.

Objective: To introduce Kovacs digital occlusal splint (KDOS) and evaluate its clinical and magnetic resonance imaging (MRI) outcomes and influencing factors in the treatment of TMD.

Patients And Methods: Patients diagnosed of TMD by MRI and treated with KDOS from June 2020 to December 2021 were retrospectively reviewed.

Biomechanical analysis of a temporomandibular joint prosthesis for lateral pterygoid muscle reattachment.

Objective: To analyze the biomechanical properties of a novel temporomandibular joint (TMJ) prosthesis with an attachment area for the lateral pterygoid muscle (LPM).

Study Design: Three prosthesis models were created and compared using finite element analysis for the displacement, stress, and strain when simulating the maximum bite force loading. A verification experiment and a compression test were conducted.

Disc repositioning by open suturing vs. mini-screw anchor: stability analysis when combined with orthognathic surgery for hypoplastic condyles.

Background: Disc repositioning by Mitek anchors for anterior disc displacement (ADD) combined with orthognathic surgery gained more stable results than when disc repositioning was not performed. But for hypoplastic condyles, the implantation of Mitek anchors may cause condylar resorption. A new disc repositioning technique that sutures the disc to the posterior articular capsule through open incision avoids the implantation of the metal equipment, but the stability when combined with orthognathic surgery is unknown.