3D Model Construction and Biomechanical Analysis of Temporomandibular Joint Disc Perforation Based on Arthrography.

Objectives: Disc perforation (DP) is a severe type of temporomandibular joint (TMJ) disorder. Arthrography-assisted CBCT can visually detect the location and size of DPs. This study aims to use imaging modeling software to construct a three-dimensional (3D) visual model of DP, simulating its biomechanical impact on the TMJ to provide a scientific basis for diagnosis and treatment.

Circularly Polarized Ultraviolet Light-Activated Asymmetric Photopolymerization for the Synthesis of CPL-Active Materials.

Circularly polarized ultraviolet light (CP-UVL) offers significant potential for practical applications in asymmetric photocatalysis and photopolymerization. However, the development of CP-UVL-active materials has been hindered by their low emission dissymmetry factors (gem). Here, we present a high-performance CP-UVL material for asymmetric photopolymerization, achieved through thermodynamic regulation of a chiral supramolecular assembly.

CT data analysis of temporomandibular joint morphology in patients with Open-mouth breathing.

Objective: This study aims to investigate the correlation between open-mouth breathing and temporomandibular joint morphology by examining CT data in patients.

Methods: From January to December 2022, 31 patients with open-mouth breathing and 20 with normal breathing were chosen from those attending the Stomatological Hospital of Chongqing Medical University. We compared condylar measurements among normal breathers (NB), pre-operative open-mouth breathers (Pre-OB), and post-operative open-mouth breathers (Post-OB) to identify statistically significant differences.

Biomechanical effects of joint disc perforation on the temporomandibular joint: a 3D finite element study.

Background: Disc perforation (DP) is a severe type of Temporomandibular Disorder (TMD). DP may induce changes in the internal stresses of the temporomandibular joint (TMJ). Herein, this study attempts to investigate the biomechanical effects of different positions and sizes of DP on the TMJ using a biomechanical approach, to explore the mechanical pathogenesis of TMD.

Low-intensity pulsed ultrasound in the treatment of masticatory myositis and temporomandibular joint synovitis: A clinical trial.

Background: Low-intensity pulsed ultrasound (LIPUS) is a non-invasive physical stimulation application for the therapy of articular cartilage injury. This study aimed to explore the therapeutic effects of low-intensity pulsed ultrasound in treating masticatory myositis and synovitis in temporomandibular joint disorders and to establish an evaluation system to evaluate the clinical efficacy.

Methods: TMD patients who met the inclusion criteria in the temporomandibular joint clinic of the affiliated Stomatological Hospital of Chongqing Medical University from April 3, 2021, to December 2021 were selected.

Self-Healable and Reprocessable Polysulfide Sealants Prepared from Liquid Polysulfide Oligomer and Epoxy Resin.

Polysulfide sealants have been commercially applied in many industrial fields. In this article, we study the self-healing property of the epoxy resin-cured polysulfide sealants for the first time. The obtained sealants showed a flexible range of ultimate elongation of 157-478% and a tensile strength of 1.