Cranio-The Journal of Craniomandibular & Sleep Practice最新文献

Objective: To conduct the cross-cultural adaptation and psychometric validation of the OHIP-TMDs for Portuguese-speaking populations, developing a unified version that encompasses both European and Brazilian Portuguese variants.

Methods: A bicentric observational study was conducted according to Beaton's guidelines and COSMIN standards. The instrument underwent translation, expert review, and pre-testing. Psychometric validation included 211 individuals with TMD (Portugal: n=98; Brazil: n=113). Internal consistency (Cronbach's α, McDonald's ω), test-retest reliability (ICC), structural validity (CFA), convergent validity (Fonseca Anamnestic Index), and known-groups validity were assessed separately for each country.

Results: The OHIP-TMDs-PT demonstrated excellent internal consistency (α=0.98 PT; α=0.96 BR) and reliability (ICC=0.96 PT; ICC=0.94 BR). CFA supported a unidimensional structure in Portugal and a second-order model in Brazil. Strong convergent validity and significant known-groups differences were observed.

Conclusion: The OHIP-TMDs-PT is a reliable and valid instrument for assessing oral health-related quality of life in individuals with TMD across Lusophone populations.

Objective: This study examined the associations between perceived stress, sociodemographic and health-related factors, temporomandibular disorders (TMD), and masticatory muscle thickness assessed by ultrasonography.

Methods: Forty participants were classified into high- and normal-stress groups. Perceived stress, TMD status, and ultrasonographic thickness of the masseter, anterior temporalis, and anterior digastric muscles were assessed.

Results: Higher perceived stress was associated with greater TMD prevalence and reduced anterior digastric muscle thickness. Male participants showed greater masseter and digastric muscle thickness. In regression analyses, female gender and high perceived stress were associated with reduced anterior digastric thickness. However, group differences in TMD prevalence and the absence of bruxism assessment limit causal inference.

Conclusion: Perceived stress and gender were associated with anterior digastric muscle thickness in this exploratory, cross-sectional sample of young adults.

Objective: To investigate the association between tinnitus impact and craniofacial and cervical disability, dizziness, anxiety, and depression in individuals with Temporomandibular Disorders (TMDs) and self-reported tinnitus.

Methods: A cross-sectional study. Fifty individuals with TMDs and tinnitus completed the Tinnitus Handicap Inventory (THI), Neck Disability Index (NDI), Craniofacial Pain and Disability Inventory (CF-PDI), Dizziness Handicap Inventory (DHI), and Hospital Anxiety and Depression Scale (HADS). Prevalence, correlation. and a multiple linear regression were calculated to verify the association between THI and variables assessed.

Results: Individuals with TMD and tinnitus impact have higher prevalence of cervical disability, higher prevalence of dizziness-related impact and higher prevalence of depressive symptoms than those with TMD and no tinnitus impact. THI scores presented positive and moderate correlations with NDI and HADS and 22% of its variance was explained by anxiety symptoms.

Conclusion: Findings highlight the interplay between emotional and musculoskeletal factors, suggesting comprehensive and multidisciplinary management.

To evaluate signs and symptoms of temporomandibular disorders (TMD) and bruxism in aligner wearers. 87 participants were assessed through virtual questionnaire, while 20 aligner users and 20 controls were clinically followed-up for three months. Cluster analysis identified three patient profiles differing in age, pain, and oral behaviors. No association was observed between aligner use and TMD or self-reported bruxism onset. Aligner and control groups showed reduced oral habits over time, suggesting that clear aligner therapy does not increase the risk of TMD or bruxism but may contribute to greater awareness and control of oral parafunctional behaviors.

Objectives: To investigate the relationship between Type D personality and temporomandibular disorders.

Methods: A cross-sectional study was conducted with 50 participants (25 TMD patients and 25 healthy controls) aged 17-61 years. TMD diagnosis was established according to the DC-TMDs. Psychological status was assessed using the GAD-7, PHQ-9, OHIP-14, and DS-14.

Results: A significant difference was found between the TMD and control groups in terms of gender. The presence of type D personality disorder showed no significant differences regarding age, gender, education level, occupation and marital status. However, the presence of type D personality disorder showed significant differences regarding GAD-7, PHQ-9, OHIP-14 scores.

Conclusion: Type D personality was not found to be a significant risk factor for the presence of TMD in this sample. Future studies with larger, more diverse populations are warranted to further clarify the complex interaction between personality traits and TMD pathophysiology.

Background: The lateral pterygoid muscle is important for temporomandibular joint function and is closely related to the maxillary artery, which is clinically significant during procedures like botulinum toxin injections and infratemporal fossa surgery.

Methods: Thirty hemifaces from human cadavers were dissected. The study documented the number of muscle heads, insertion sites, and the course of the maxillary artery in relation to the muscle (superficial, deep, or transitional). Morphometric measurements included the distance between the maxillary artery and surface landmarks.

Results: A two-headed lateral pterygoid muscle was observed in 93.3% of specimens. The superior head most commonly inserts into both the articular disc and joint capsule (60%). The maxillary artery most frequently follows a superficial course (53.3%). The mean vertical distance to the tragus is 13.5 mm, the transverse distance is 34.1 mm, and the mean depth from the zygomatic arch is 23.3 mm.

Conclusions: The observed anatomical variability and morphometric data offer clinically practical guidance to minimize the risk of vascular injury during temporomandibular joint procedures.

Introduction: A bidirectional interaction may exist between temporomandibular disorders (TMD) and otologic symptoms. This study aimed to evaluate changes in patient-reported otologic symptoms following temporomandibular joint (TMJ) arthrocentesis.

Materials and methods: This retrospective cohort study included 40 patients who underwent TMJ arthrocentesis. Demographic data, TMJ-related clinical findings, otologic symptoms, and visual analog scale (VAS) scores were assessed preoperatively and at a 30-day follow-up.

Results: .The majority of patients were female (82.5%), with a mean age of 35.4 ± 11.03 years. Significant reductions were observed in otalgia and tinnitus after arthrocentesis (p < .05). No significant changes were detected in hearing loss or vertigo (p > .05). VAS scores showed significant improvement in TMD symptoms, otalgia, and tinnitus, while hearing loss and vertigo remained unchanged.

Conclusion: TMJ arthrocentesis was associated with subjective improvement in otalgia and tinnitus in patients with TMD, whereas hearing loss and vertigo showed no significant change.

Objective: To evaluate supervised machine learning (ML) models for classifying temporomandibular joint (TMJ) disc displacement on MRI using morphometric and signal intensity features.

Methods: This retrospective study analyzed 324 TMJs from 162 individuals who underwent 3T MRI. Extracted features included condylar anteroposterior and mediolateral diameters, disc and condyle morphology, and lateral pterygoid muscle signal intensity ratios. Six ML algorithms (Random Forest, Gaussian Naïve Bayes, Logistic Regression, AdaBoost, Gradient Boost, and k-Nearest Neighbor) were evaluated using stratified 5-fold cross-validation. Performance was assessed with accuracy, macro-averaged recall, precision, F1-score, and ROC-AUC.

Results: All models demonstrated good classification performance (ROC-AUC >0.80). AdaBoost achieved the highest ROC-AUC (0.88), while Gaussian Naïve Bayes showed the most balanced overall metrics. Mediolateral condylar diameter and disc morphology were key features associated with disc displacement categories.

Conclusions: ML models can identify MRI-based morphometric patterns related to TMJ disc displacement and may support radiologic assessment, while clinical diagnosis should continue to rely on established standards of care.