Influence of psychological factors on the prognosis of temporomandibular disorders pain

Synthesis of temporomandibular disorders management intervention outcomes for development of core outcome sets: A systematic review

INTRODUCTION

The selection of appropriate outcomes in clinical trials and systematic reviews is a crucial factor in determining the results that are useful, reliable, and relevant for both patients and healthcare professionals. Clinicians and researchers have been encouraged to develop and apply core outcome sets (COS) to minimise the discrepancy between studies.

AIM

This systematic review is the first phase of the COS development project for clinical trials in temporomandibular disorders (COS-TMD). It aims to identify and synthesise the outcomes used in the randomised controlled trials (RCT) that evaluated the effectiveness of interventions used in TMD management.

MATERIALS AND METHODS

An electronic search was performed in several databases: MEDLINE (via PubMed), Scopus, Web of Science, Cochrane Library and EMBASE. The eligibility criteria comprised RCT that applied any intervention to treat temporomandibular joint disorders or masticatory muscle disorders. The identified outcomes were categorised according to domains of the Initiative on Methods, Measurement and Pain Assessment in Clinical Trials (IMMPACT).

RESULTS

The electronic search resulted in 1606 studies. After removing duplicates and applying the eligibility criteria, 106 RCT were included. A total of 43 studies evaluated masticatory muscle disorders, 27 evaluated temporomandibular joint disorders, and 36 analysed mixed TMD.

CONCLUSIONS

The evaluation showed significant variability in the types of outcomes and their measurement instruments. In addition, some domains such as physical and emotional functioning, participant ratings of global improvement and adverse events have been neglected when determining the effectiveness of treatments for TMD.

Kartogenin potentially protects temporomandibular joints from collagenase-induced osteoarthritis via core binding factor β and runt-related transcription factor 1 binding - A rat model study

Background/purpose

Temporomandibular joint (TMJ) osteoarthritis (TMJOA) is a chronic disease with progressive destruction of articular cartilage. This study aimed to explore the therapeutic effects of kartogenin on TMJOA via promoting the binding of core binding factor β (CBFβ) and runt-related transcription factor 1 (RUNX1).

Materials and methods

Type II collagenase was injected into 35 8-week-old male Sprague Dawley rat TMJs to establish the TMJOA model. Kartogenin, or the CBFβ-RUNX1 complex inhibitor (Ro5-3335), was also delivered via intra-articular injection. Subchondral bone was analyzed by MicroCT. The hematoxylin-eosin, Safranin O, and toluidine blue O staining were used to observe histopathology. Immunohistochemical staining of proliferating cell nuclear antigen (PCNA), caspase-3 (CASP3), interleukin-1β (IL-1β), and collagen II (COL2) was performed.

Results

TMJOA was established in rats by intra-articular injection of type II collagenase. The condylar cartilage and subchondral bone were damaged, with decreased PCNA and COL2 and increased CASP3 and IL-1 (P < .001). Compared with the OA group, kartogenin alleviated the destruction of cartilage and subchondral bone, rescued the expression of PCNA and COL2, and decreased the expression of CASP3 and IL-1β (P < .01). Ro5-3335 did not aggravate the pathology of TMJOA but neutralized the therapeutic effects of kartogenin on TMJOA.

Conclusion

Kartogenin has a potential therapeutic effect on TMJOA via promoting the CBFβ-RUNX1 binding.

It Is Time for a Multidisciplinary Rehabilitation Approach: A Scoping Review on Stomatognathic Diseases in Neurological Disorders

Patients affected by neurological disorders can develop stomatognathic diseases (SD) related to decreased bite force and quality of mastication, bruxism, severe clicking and other temporomandibular disorders (TMD), which deeply affect patients' swallowing, masticatory and phonation functions and, therefore, their quality of life. The diagnosis is commonly based on medical history and physical examination, paying attention to the temporomandibular joint (TMJ) range of movements, jaw sounds and mandibular lateral deviation. Diagnostic tools such as computed tomography and magnetic resonance imaging are used instead in case of equivocal findings in the anamnesis and physical evaluation. However, stomatognathic and temporomandibular functional training has not been commonly adopted in hospital settings as part of formal neurorehabilitation. This review is aimed at describing the most frequent pathophysiological patterns of SD and TMD in patients affected by neurological disorders and their rehabilitative approach, giving some clinical suggestions about their conservative treatment. We have searched and reviewed evidence published in PubMed, Google Scholar, Scopus and Cochrane Library between 2010 and 2023. After a thorough screening, we have selected ten studies referring to pathophysiological patterns of SD/TMD and the conservative rehabilitative approach in neurological disorders. Given this, the current literature is still poor and unclear about the administration of these kinds of complementary and rehabilitative approaches in neurological patients suffering from SD and/or TMD.

Psychological and Behavioral Factors Involved in Temporomandibular Myalgia and Migraine: Common but Differentiated Profiles

BACKGROUND

Many studies have revealed high comorbidity and a clear association between temporomandibular disorders (TMD) and migraine. Furthermore, evidence points out that common psychological and behavioral factors might be related to the observed TMD and migraine association. However, this association and the underlying psychological factors are poorly understood.

OBJECTIVE

The main goal of this study was to describe the psychological and behavioral factors involved in TMD myalgia and migraine.

METHODS

A sample of 142 participants were recruited to form 4 groups: migraine patients (ICHD-III criteria), painful-TMD patients (Myalgia DC/TMD criteria), patients suffering from both pathologies according to the same criteria, and control patients. After a dental and neurological examination, the patients filled several psychological questionnaires validated for the Spanish population to assess anxiety (STAI), depression (DEP), stress coping (CRI), and somatic, anxiety, and depression symptoms (BSI-18).

RESULTS

The TMD myalgia patients, in general, showed a state of elevated anxiety, somatization, and reduced coping strategies, while the patients with migraine presented greater anxiety symptoms, depression (dysthymia trait and state), and somatization.

CONCLUSIONS

According to the data of the present study, situational anxiety (transient emotional state), together with the lack of coping strategies, could be more associated with TMD myalgia, while anxiety, as a more stable and long-lasting emotional state, together with depression, might be more related to migraine. Further longitudinal studies are needed to unravel whether these differentiated profiles are a consequence or possible risk factors for migraine and TMD.

Use of the Depression Anxiety Stress Scale-21 in young people with temporomandibular disorders: Reliability and dimensionality

OBJECTIVE

The reliability and dimensionality of the Depression Anxiety Stress Scale-21 (DASS-21) were explored in adolescents/young adults with temporomandibular disorders (TMDs).

METHODS

TMD presence was established with the Fonseca Anamnestic Index. Reliability of the DASS-21 for participants with (WT) and without (NT) TMDs was assessed by the Cronbach alpha test, while dimensionality was examined using exploratory factor analysis.

RESULTS

Data from 400 participants (mean age 18.8 ± 1.5 years; 52.2% women) comprising 47.0% with and 53.0% without TMDs were evaluated. Total-DASS and the 3 subscales showed acceptable to high internal consistencies for the WT and NT groups, with alphas of 0.78-0.94 and 0.66-0.92, respectively. Although 3 factors contributed to about half the variance for both groups, scalar and item discrepancies in the primary anxiety-stress factor existed.

CONCLUSION

The DASS-21 has good reliability but may comprise only 2 dimensions, specifically anxiety-stress and depression, instead of the 3 originally asserted.

The High Burden of Acute and Chronic Pain in General Practice in French-Speaking Belgium

Background

Chronic pain prevalence is very high in the general population, much higher than can be managed by chronic pain centers. Therefore, most pain patients are cared for by first-line professionals. However, general practitioners often feel ill at ease with these patients, and only a few studies assess the burden of chronic pain in general practice. To better estimate the resources needed to support these professionals, a good knowledge of (sub)acute and chronic pain prevalence and prognosis in general practices is needed.

Methods

We report cross-sectional data from a larger longitudinal study performed in French-speaking general practices in Belgium in November 2018. Fifth-year medical students performing a one-month internship collected data for every third patient they saw each day: demographic information, pain characteristics, lifestyle, general health perception and the short Örebro Musculoskeletal Pain Screening Questionnaire in the French language.

Results

3882 patients (participation rate 66%) accepted to take part in the study. 22 and 50% of these suffered from (sub)acute and chronic pain, respectively. Pain was more often the motive of the consultation for (sub)acute than for chronic pain patients. Pain intensity and functional impact were moderate, irrespective of pain duration. 70% of (sub)acute and 31% of chronic pain patients were at low risk of chronicity.

Conclusion

In our sample, chronic pain patients constituted 33-50% of patient contacts in general practice, indicating the high importance of providing adequate support to general practitioners and other first-line professionals, ie, by reinforcing collaboration with chronic pain centers.

COVID-19 and the Mental Health of Nursing Professionals in Brazil: Associations between Social and Clinical Contexts and Psychopathological Symptoms

The COVID-19 pandemic has had an important negative psychological impact on people worldwide, especially nursing professionals who seem to be more vulnerable to the development of psychopathological symptoms. Objective: To analyze relationships between variables from the social and clinical contexts with psychopathological symptoms in nursing professionals from different geographic regions of Brazil during the COVID-19 pandemic. Methods: Cross-sectional study carried out with 1737 nursing professionals from the five regions of Brazil. Data collection was carried out online with a questionnaire made available via Google Forms containing sociodemographic, occupational, and clinical questions, and the Symptom Assessment Scale-40-R, for the assessment of psychopathological symptoms. Differences between mean scores for the severity of psychopathological symptoms were assessed using the Mann-Whitney and Kruskall-Wallis tests. Results: There was a significant difference in the psychoticism domain scores according to Brazilian geographic region, with greater severity among professionals from the North and Northeast regions when compared with those from the South region. Social context variables (gender, age group, and marital status) and clinical variables (psychological and psychiatric follow-up; psychological or emotional support by the institution; family member, friend, neighbor, or co-worker with COVID-19, and death among them; use of psychiatric medication without a medical prescription; and taking steps to take care of their mental health) were significantly related to psychopathological symptoms. Conclusions: The results point to the importance of mental health promotion strategies for professionals through psychological or emotional support, as evidence indicates that this support can be a predictor of reduced psychological distress.