Temporomandibular Disorder

This cross-sectional study will examine the relationship between mandibular dysfunction, cervical joint position sense, craniovertebral angle, neck pain, and temporomandibular dysfunction (TMD) severity. TMD severity, mandibular function, cervical proprioception, craniovertebral angle, and neck pain history will be assessed using standardized clinical tools and questionnaires. The study will evaluate the associations between these variables and determine the factors that may predict TMD severity.

This observational cross-sectional study aims to investigate the association between skeletal malocclusions and body posture using three-dimensional postural analysis. Patients will undergo cephalometric assessment, temporomandibular disorder evaluation using the Helkimo index, and non-invasive postural evaluation using the Spine 3D system, based on rasterstereography technology. Postural parameters, including thoracic kyphosis, lumbar lordosis, trunk inclination, pelvic asymmetry, and spinal deviations, will be analysed in relation to skeletal malocclusion classes and temporomandibular disorders. The study seeks to improve the understanding of the potential interactions between the stomatognathic system and global body posture and to support a multidisciplinary diagnostic approach in orthodontic patients.

This study will use a between-person design. Participants will be treatment-seeking patients with chronic masticatory muscle pain. Participants who are eligible for the study and consent to participate will be randomly assigned to receive a brief behavioral intervention for chronic orofacial pain called Physical Self-Regulation or a control intervention. Interventions will be administered via telehealth in both arms. Both interventions will consist of 2 50-minute sessions scheduled approximately two weeks apart. Participants will be contacted two weeks and three months after completing the interventions to provide additional follow-up data. Investigators hypothesize that both PSR-TH and the control intervention will demonstrate strong feasibility (i.e., recruitment of at least 1 participant per week, \>75% retention, \>95% interventionist fidelity, and adequate acceptability, credibility, and burden). Investigators also hypothesize that specific biopsychosocial variables will moderate PSR-TH-related changes in outcomes, and that PSR-TH-related changes in perceived control over pain, self-efficacy, coping, parafunctional habits, and relaxation will mediate treatment effects.

Temporomandibular disorders (TMD) encompass a group of conditions involving the masticatory muscles, temporomandibular joint (TMJ), and associated structures. TMD is the most common cause of non-odontogenic orofacial pain and is the second most commonly occurring musculoskeletal condition. Up to 70% of the general population experiences signs and/or symptoms of TMD, with headache presenting as one of the most common manifestations. Recent studies highlight the comorbid presence of headache and TMD, hypothesizing that a relationship likely exists between the two conditions. Headache severity has also been associated with the number of TMD symptoms such that the prevalence of headache in TMD patients. A key mechanism underlying both TMD and migraine is the deficiency in Conditioned Pain Modulation (CPM), a descending inhibitory pathway that regulates pain processing. CPM impairment has been implicated in chronic pain states, including both migraine and TMD, contributing to their frequent co-occurrence and shared pathophysiology. Remote Electrical Neuromodulation (REN) is an emerging non-pharmacological intervention that exerts its analgesic effects by activating the CPM system, which is deficient in individuals with TMD and migraine. The Nerivio REN wearable device is FDA-cleared for acute and/or migraine prevention, in patients 8 years of age or older. Given the evidence linking CPM dysfunction to TMD pathogenesis, REN presents a promising therapeutic approach to addressing both the underlying pain dysregulation and symptom burden in affected patients.

This study is a randomized, double-blind, sham-controlled feasibility trial designed to assess the acceptability and preliminary efficacy of Transcutaneous Auricular Neurostimulation (tAN) for individuals with Temporomandibular Disorders (TMD). Approximately 40 participants will be enrolled to evaluate whether daily, home-based tAN sessions-which deliver mild electrical pulses to the auricular branch of the vagus nerve-can effectively reduce chronic orofacial pain and improve associated cognitive and psychosocial dysfunctions. The study monitors feasibility through retention and adherence rates while tracking secondary outcomes such as pain intensity, cognitive flexibility, and mood changes using validated scales and wearable smartwatch data . Ultimately, this research aims to generate the critical data necessary to inform larger clinical trials and potentially offer a non-pharmacological, non-invasive treatment option for patients refractory to traditional TMD therapies.

The proposed study will assess the effect of local heat therapy on jaw pain and jaw fatigue secondary to a teeth clenching task in chronic TMD pain cases. Researchers expect that most participants will respond to heat therapy and consequently experience reduced jaw pain and fatigue during teeth clenching. The study will assess the clinical characteristics of those participants who respond and do not respond to local heat therapy, in order to determine the common clinical characteristics for those in each response category.

The study aims to assess the outcomes of arthroscopic lysis and lavage procedure with and without single intra-articular injection of hyaluronic acid in managing patients with anterior disc displacement without reduction. The research question that this study will answer is: Does arthroscopic lysis and lavage combined with hyaluronic acid provide better outcomes in terms of pain intensity and maximum mouth opening compared to arthroscopic lysis and lavage alone?

This project examines, in chronic pain, the mechanisms of immersive virtual reality compared to the mechanisms of placebo hypoalgesia. The potential of developing new non-pharmacological premises for low-risk interventions for pain management is high.

Nowadays, fibromyalgia is the rheumatic disorder with the highest levels of deterioration in quality of life. Among the comorbidities it presents, one of the most frequent is temporomandibular disorders. A randomized clinical study will be conducted to evaluate the effectiveness of an osteopathic manual therapy approach algorithm in a group of patients with fibromyalgia and temporomandibular disorders.

Summary: Low-level laser auriculotherapy (LLLT-AT) is a non-invasive technique that has gained attention for managing musculoskeletal pain and anxiety. Given the painful and emotional components of temporomandibular disorders (TMD), LLLT-AT may offer therapeutic benefits by stimulating auricular points associated with pain modulation and anxiety reduction. This randomized, placebo-controlled, two-arm clinical trial with blinded outcome assessors aims to evaluate the effects of LLLT-AT in individuals diagnosed with myogenic TMD (Axis I, Group I of the DC/TMD classification) and anxiety. The study will be conducted at the Physical Agents Laboratory of Universidad Andrés Bello. Eligible participants will include members of the university community with myogenic TMD (Axis I, Group I of the DC/TMD classification) and anxiety. Participants will be stratified by sex and randomly assigned to either an experimental group receiving LLLT-AT combined with a standardized myofascial release protocol or a control group receiving sham LLLT-AT with the same myofascial protocol. Interventions will be administered twice weekly for three weeks. Outcome measures will be collected at baseline, post-intervention, and at a four-week follow-up. Primary outcomes include pressure pain threshold (PPT), assessed by algometry, and anxiety level, measured using the GAD-7 scale. Secondary outcomes include maximum mouth opening range of motion (MMOROM) and mandibular functional limitation (MFL), assessed using the Jaw Functional Limitation Scale 8 (JFLS-8).

Temporomandibular disorders (TMD) encompass dysfunction and pain of the masticatory muscles and temporomandibular joint (TMJ). Pain in the TMJ, restricted jaw movement, and joint sounds are common conditions in this disorder. This can impact patients' ability to perform daily activities such as eating, speaking, laughing, or yawning, significantly affecting their quality of life. The TMJ and masticatory muscles are innervated by the auriculotemporal branch and the mandibular nerve (V3), a branch of the trigeminal nerve. An estimated 60% to 70% of the population shows signs of TMD, of which up to 12% report intense symptoms requiring treatment. Percutaneous electrical nerve stimulation (PENS) could be a clinically relevant therapy in TMD patients applied through minimally invasive physiotherapy. To our knowledge, there are no trials evaluating the non-surgical clinical efficacy of PENS on the mandibular nerve. The project's objective is to assess the effectiveness of PENS on the mandibular nerve in this type of condition.

Temporomandibular Disorders (TMD) encompass various conditions that affect the temporomandibular joint and associated tissues, often causing or being associated with other symptoms such as jaw pain, myofascial pain, neck pain, and headaches. TMDs are classified according to the DC/TMD instrument in which the joint and pain axes are evaluated. However, there is no evaluation of mandibular function, and TMDs can result in a decrease in jaw strength and resistance. This leads to an increase in the chewing fatigue. Reliable and time-effective diagnostic methods for evaluating masticatory function are crucial in the clinical setting because of the high prevalence of TMD. Chewing efficiency is essential for food preparation and nutrient absorption, and muscle fatigue is a common problem affecting chewing ability. Despite this, there is a lack of validated tests to evaluate chewing fatigue in patients with TMD, which makes its consideration unnoticed in clinical practice. The modified six-minute functional chewing test (F-6MMT) was proposed as a tool to evaluate chewing ability and fatigue in patients with TMD. This test is an adaptation of a previously designed test in which subjects with mitochondrial pathology were evaluated; however, the subjects were not instructed to perform functional chewing during the test. In this version, modifications are added so that the test is as functional as possible, allowing chewing to be evaluated in a standardized way, and cut-off points established between healthy subjects and subjects with TMD in terms of chewing capacity in general and fatigue in particular. This study will follow standardized reporting guidelines and recruit participants from diverse clinical settings.

Musculoskeletal (MSK) disorders are some of the most burdensome health issues in the world and the leading causes of years living with a disability. Between them, jaw pain and neck have been very prevalent among the general population. Subjects with chronic neck and jaw pain present with persistent pain, allodynia, and hyperalgesia, sometimes extending to regions distant from the neck, head, or face, as well as cognitive and motor dysfunction. In addition, both conditions are commonly related to pain in other anatomical regions, and they also might also exhibit a greater risk for pain-associated somatic symptom burden. The treatment for patients with neck and jaw could involve different techniques in the rehabilitation area. Between them, therapeutic exercise is a cornerstone of MSK disease rehabilitation. Although mechanisms of action for exercise in subjects with pain are not yet understood, therapeutic exercise is widely applied in a variety of painful MSK conditions, such as low back pain, shoulder pain, knee pain, osteoarthritis, and disorders of the cervical and craniofacial regions such as temporomandibular disorders, headaches, and neck pain. Besides its effects on function and health, therapeutic exercise is known to have some pain-relieving effects and specific motor control exercises targeted to the neck can enhance the neural control of the cervical spine in patients with neck involvement such as patients with jaw and neck pain. Previous studies have demonstrated that treatment directed to the neck may be beneficial in decreasing pain intensity in the masticatory muscles, increasing pain-free mouth opening, and decreasing pain in the head and neck regions in people with jaw pain. In addition, neck motor control exercises have been successful to manage chronic neck pain and cervicogenic headache. Subjects with neck pain and associated disorders receiving neck motor control exercises had a reduction of pain and improved quality of life. Another option that has been explored to relieve MSK pain is aerobic exercise. Aerobic exercise has been used to stimulate the release of pain-relieving peptides in healthy human beings; however, little is known about the analgesic effect of exercise in people suffering from actual musculoskeletal pain. Previous literature found positive results in favor of aerobic exercise for pain relief. However, none of them included patients with jaw and neck-related disorders. Therefore, the aim of the present pilot randomized controlled trial (RCT) is to test the effectiveness of local craniocervical motor control exercises when compared with aerobic exercise on pain-disability related outcomes such as pain intensity, pain pressure thresholds (PPTs), jaw and neck disabilities and to restore normal muscular performance and fatigability of the cervical muscles in people with jaw and neck pain. Also, an important objective for performing this pilot study is to test the feasibility of these protocols and gather data that will be the basis for applying to external funding. This study will be a randomized controlled trial, blinded, two-armed parallel group. It will include women between 18-60 years of age; diagnosed with temporomandibular disorders (i.e., jaw pain) classified by the new Diagnostic Criteria for Temporomandibular Disorders (DC/TMD); or diagnosed with idiopathic chronic neck pain associated or not with TMD. Because this is an exploratory (pilot) study it will include at least 21 subjects per treatment group. The primary outcome will be pain intensity evaluated by the Visual Analogue Scale (VAS), and the secondary outcomes will be Neck Disability Index; Jaw Function; Pressure Pain Threshold; Psychological functioning; Global Rating Scale; and Muscular performance and fatigability of the cervical muscles. The patients will be randomized into two groups: local craniocervical motor control exercises and aerobic exercise. The local craniocervical motor control exercises program will be focused on training the deep and superficial flexors and extensors neck muscles. The treatment will consist of a 12-week progressive training program with a total duration of 30-45 min per session. Individuals assigned to the aerobic exercise will receive cycling exercise, with a total duration of 60 minutes. Both groups will be evaluated before the treatment starts (baseline); after two and six weeks from the beginning of treatment (1st and 2nd partial evaluation); at the end of the treatment (final evaluation - 12 weeks); and after three and six months of the end of the treatment (1st and 2nd follow-up).

Both patients and remitters ask for treatment with Botulinumtoxin A (BTX) with the hope that it will be an effective aid for pain, but little is known regarding if the effect is dose dependent. The aim of this project is to investigate if injections with BTX in the masseter- and temporal muscle is an efficient treatment in patient with myogenous temporomandibular disorders (TMD) and if the effect of BTX is dose dependent.

The aim of this study is to investigate the validity, reliability, and responsiveness of the Cognitive Exercise Therapy Approach-Biopsychosocial Questionnaire (BETY-BQ) in individuals with temporomandibular disorder. The following are alternative hypotheses of the study: * BETY-BQ has significant convergence with the Patient Health Questionnaire-9 measuring depression. * BETY-BQ has significant convergence with the Patient Health Questionnaire-15 measuring physical symptoms. * BETY-BQ has significant convergence with the Generalized Anxiety Disorder-7 measuring anxiety. * BETY-BQ has significant convergence with the Short Form-36 measuring quality of life. * BETY-BQ has significant convergence with the Craniomandibular Pain and Disability Inventory measuring disability. * BETY-BQ has significant convergence with the Mandibular Function Impairment Questionnaire measuring function. * BETY-BQ has significant stability. * BETY-BQ has significant internal consistency.

Temporomandibular disorder or TMD is characterized by a set of symptoms such as: pain, decreased range of motion and joint noise. It's origin is multifactorial, which may be related to biological aspects, environmental and psychosocial. The multimodal approach has been widely used in physiotherapy for the treatment of TMDs. Physiotherapy has been walking together with technology so that telerehabilitation can be a reality, contributing so that quality care reaches the patient, in the impossibility office-to-face service. The objective of this study is to verify the effect of telerehabilitation on pain outcomes, range of motion, functionality and biopsychosocial aspects in individuals with temporomandibular disorders. Will be a randomized, controlled and blinded clinical trial was carried out. The study will be divided into two moments: evaluation and intervention. Evaluations will be carried out using the Diagnostic Criteria for Temporomandibular Disorders: Clinical Protocol and Assessment Instruments (DC/TMD), the Fonseca Anamnesis Index (IAF), the Numerical Pain Scale (END) and the Functional Limitation Questionnaire (MFIQ). Individuals will be randomized into 2 groups: Group A (in person) Group B (telerehabilitation). Both groups will receive treatment physical therapy for 12 weeks. After collecting the data, they will be tabulated and analyzed using a 5% significance level.

The goal of this clinical trial is to investigate the possible role of levonorgestrel intrauterine system use(LIU) in the pathogenesis of temporomandibular joint disorder (TMD). In this clinical trial, levonorgestrel intrauterine system patients (n=30) aged 25-50 and control group patients (n=30) with the same demographics and age range are used. The main questions it aims to answer are: To compare the frequency of temporomandibular dysfunction in women using the levonorgestrel intrauterine system with the control group of the same demographic and age range. The levonorgestrel intrauterine system use group consisted of 50 women who had previously a mirena implanted by a gynecologist at least 3 months ago due to menstrual bleeding and pelvic pain. The control group included 50 randomised healthy women who had regular menstrual cycles and were not taking any medication.

The aim of this study is to compare the effects in pain of two different treatments in pacients with temporomandibular disorders (TMD). One group will receive isolated therapeutic exercise (TE) and the other will receive TE combined with pain neurophysiology education (PNE). The hypothesis of this study is that the PNE+TE group will obtain superior therapeutic results than an isolated TE program.

The aim of this randomized controlled trial is to evaluate the effects of intraoral manual therapy versus extraoral manual therapy and compare them with a control group, in the management of patients with temporomandibular disorders regarding pain, strength, quality of life, disability and anxiety.

The goal of this clinical trial is to test the effect of nerd neck correction on damaged jaw in people who suffers from jaw problems and nerd neck. The main question it aims to answer: * whether there are different effects of traditional nerd neck correction exercises, device correction method and dental splints on jaw features of pain and function. Participants will: * participants will be given the consent to sign first. * participants will be assessed to check jaw pain and function. * participants will be divided randomly into 3 groups. * Each group will be given the treatment sessions for 6 weeks. * participants will come back after 6 weeks for one last assessment. Researchers will compare traditional, new and dental treatment groups to see if there is improvement in jaw characteristics.

The purpose of this study is to look at temporomandibular joint (TMJ) pressure as a guideline to analyze the different treatments for temporomandibular disorder (TMD), and judge the feasibility of the adjust TMJ pressure treatment and to reach a conclusion on the different treatments for different types of TMD, and determine the new serial treatment of temporomandibular disorders.