Unveiling MRI-based structural phenotypes in temporomandibular joint osteoarthritis: implications for clinical practice and research.

Introduction: Osteoarthritis (OA) is a progressive degenerative disease characterized by the gradual degradation of cartilage, remodeling of subchondral bone, synovitis, and chronic pain. This condition impacts various large and small joints, including the temporomandibular joint (TMJ). However, addressing OA, particularly in impeding or reducing disease progression, is challenging due to its clinical and imaging heterogeneity.

Ultrasound-Guided Single Puncture Technique to Simultaneously Reach the Upper and Lower Temporomandibular Joint Compartments for Arthrocentesis or Injections Purposes: A Technical Note.

Temporomandibular joint (TMJ) arthrocentesis is a widely described and effective technique that promotes lysis and lavage of TMJ compartments, improving pain and mandibular range of motion. Mostly, this technique has been used to reach the upper TMJ compartment, besides effusion may be present also in lower compartment, that, in the absence of disc perforation, may also need to be assessed. Here, we propose an adaptation of arthrocentesis technique aiming to access both upper and lower compartments of the TMJ with a single needle puncture and guided by ultrasound real-time images.

Nasal septum-derived chondroprogenitor cells control mandibular condylar resorption consequent to orthognathic surgery: a clinical trial.

Condylar resorption is an aggressive and disability form of temporomandibular joint (TMJ) degenerative disease, usually non-respondent to conservative or minimally invasive therapies and often leading to surgical intervention and prostheses implantation. This condition is also one of the most dreaded postoperative complications of orthognathic surgery, with severe cartilage erosion and loss of subchondral bone volume and mineral density, associated with a painful or not inflammatory processes. Because regenerative medicine has emerged as an alternative for orthopedic cases with advanced degenerative joint disease, we conducted a phase I/IIa clinical trial (U1111-1194-6997) to evaluate the safety and efficacy of autologous nasal septal chondroprogenitor cells.

Intra-articular injections in the TMJ inferior joint space: A scoping review.

Objective: To perform a scoping review to identify the available evidence regarding intra-articular injections in the inferior joint space (IJS) of the temporomandibular joint (TMJ).

Methods: An electronic search of the PubMed, Web of Science and Scopus databases was performed using the following terms: "Arthrocentesis", "injection", "joint injection", "technique", "Temporomandibular joint", "Temporomandibular joint disorder". Full-text articles were obtained from the records after applying the inclusion/exclusion criteria.

Advantages of ultrasound guidance for TMJ arthrocentesis and intra-articular injection: A narrative review.

Ultrasound (US) is a widely available, low-cost, non-invasive, and safe medical imaging method that enables real-time observation. Ultrasound offers several advantages for dentomaxillofacial images, such as portability, the possibility of dynamic and repeated examinations, patient comfort, and availability. It is a useful tool for recognizing the temporomandibular joint (TMJ) structures and their involvement during the course of different pathological processes, such as articular disk displacement, joint effusion and cortical erosion.

Effectiveness of dry needling on the local pressure pain threshold in patients with masticatory myofascial pain. Systematic review and preliminary clinical trial.

: To systematically review the literature to identify controlled clinical trials evaluating the effectiveness of deep dry needling (DDN) in the treatment of patients with chronic masticatory myofascial pain (MMP).: The sample size for a clinical trial was calculated and involved five patients who consecutively presented for treatment of MMP. The percentage of change in the means of three consecutive measurements of the pressure pain threshold (PPT) of myofascial trigger points (MTPs) was calculated and the statistical significance of this difference evaluated using the Wilcoxon test.

Differences in non-specific physical symptom levels and pressure pain thresholds between patients with masticatory myofascial pain and arthralgia.

: To compare the levels of non-specific physical symptoms and pressure pain threshold (PPT) found in patients with masticatory myofascial pain with those found in patients with temporomandibular arthralgia alone. : The study followed an observational and cross-sectional protocol. A total of 64 female patients were evaluated for the presence of painful TMD, non-specific physical symptom levels, and PPT.

Temporomandibular joint regeneration: proposal of a novel treatment for condylar resorption after orthognathic surgery using transplantation of autologous nasal septum chondrocytes, and the first human case report.

Background: Upon orthognathic mandibular advancement surgery the adjacent soft tissues can displace the distal bone segment and increase the load on the temporomandibular joint causing loss of its integrity. Remodeling of the condyle and temporal fossa with destruction of condylar cartilage and subchondral bone leads to postsurgical condylar resorption, with arthralgia and functional limitations. Patients with severe lesions are refractory to conservative treatments, leading to more invasive therapies that range from simple arthrocentesis to open surgery and prosthesis.

Cross-sectional study of anxiety symptoms and self-report of awake and sleep bruxism in female TMD patients.

Aims: The aim of this study was to assess the relationship between levels of anxiety symptoms and prevalence of self-report of awake and sleep bruxism in patients with temporomandibular disorders (TMD).

Method: One hundred and eighty-one female patients, aged 19-77 years, were consecutively evaluated. The patients were selected from among those who sought treatment at the TMD and Orofacial Pain Outpatient Clinic of the Petrópolis School of Medicine.

Frequency of temporomandibular arthralgia among myofascial pain patients with pain on palpation of ipsilateral masseter.

Aims: The masseter muscle is a common source of referred pain to the temporomandibular joint (TMJ), with a possibility of false positive diagnoses for arthralgia when diagnosed by research diagnostic criteria for temporomandibular disorders (RDC/TMD) clinical examination. The current study investigated the distribution of arthralgia diagnoses among individuals with myofascial pain, with or without pain on masseter palpation.

Methodology: The study was conducted with 255 outpatients.