scholarly journals Results of Using Arthrocentesis in the Treatment of Temporomandibular Disorders Associated with Fractures of the Mandibular Condylar Process

2021 ◽  
Vol 6 (6) ◽  
pp. 171-176
Author(s):  
Kh. R. Pohranychna ◽  
◽  
R. Z. Ohonovskyi
Keyword(s):  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Computer Tomography ◽  
Temporomandibular Disorders ◽  
Stage Iii ◽  
Articular Disc ◽  
Intermaxillary Fixation ◽  
Disc Protrusion ◽  
Articular Process ◽  
Post Traumatic

The purpose of the work was to study the effectiveness of arthrocentesis in the complex treatment of post-traumatic temporomandibular disorders. Materials and methods. The clinical part of the study included 24 patients, who had a history of fractures of the mandibular articular process. Patients underwent radiological examination – orthopantomography, computer tomography, ultrasound and magnetic resonance. Patients with titanium mini-plates after osteosynthesis were subjected to ultrasound, and since the reposition and fixation of fragments was performed using intermaxillary fixation they were subjected to magnetic resonance imaging. Pain assessment was performed according to visual analogue scale. Temporomandibular joint arthrocentesis was performed according to a modified method of D. Nitzan (1991) under local anesthesia. Results and discussion. All patients complained of the temporomandibular joint pain, which was rated from 1 to 6 points. All patients noted pain on palpation of the temporomandibular joint. Limited mouth opening ranging from 30 to 38 mm was found in 11 patients. Lower jaw deviation was observed in 18 patients. All patients had articulatory noises – clicking, and 11 had blocked movement of the joint head. Orthopantomograms or computer tomography revealed satisfactory restoration of the anatomical shape of the mandible after fractures and complete consolidation of the fracture. Ultrasound and magnetic resonance revealed signs of unabsorbed hematoma as consequences of hemarthrosis; in 18 patients – deformity of the capsule, in 17 – a slight thickening of the posterior edge of the articular disc, in 18 patients – disc adhesion, in 13 people – forward disc displacement with reduction, in 11 patients – disc protrusion without reduction. According to clinical and radiological signs after traumatic temporomandibular disorders, patients were divided into two groups according to Wilkes classification: 13 patients with stage II (early-middle) and 11 – with stage III (middle). We also found that after surgical treatment – osteosynthesis, the number of patients with stage III according to Wilkes makes up 58.33% (7 people), while those after splinting – 33.33% (4 people). The control ultrasound and MRI carried out 3-6 months after arthrocentesis showed no signs of hemarthrosis in 11 (84.61%) patients with intra-articular disorders of the second degree, and in 8 (72.72%) patients with internal disorders of the third degree, the position and function of the articular disc were restored. Conclusion. Arthrocentesis with temporomandibular joint lavage is a minimally invasive surgical manipulation that has proven itself in temporomandibular disorders of traumatic origin, in particular after fractures of the articular process of the mandible. Arthrocentesis is recommended to be used after ineffective conservative treatment, as well as to prevent post-traumatic intra-articular disorders in the early post-treatment fractures (intermaxillary fixation or osteosynthesis) with the attenuation of acute post-traumatic events, which is our goal of further work

scholarly journals Automated segmentation of articular disc of the temporomandibular joint on magnetic resonance images using deep learning

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Shota Ito ◽  
Yuichi Mine ◽  
Yuki Yoshimi ◽  
Saori Takeda ◽  
Akari Tanaka ◽  
...  
Keyword(s):  
Neural Network ◽  
Deep Learning ◽  
Magnetic Resonance ◽  
Convolutional Neural Network ◽  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Temporomandibular Disorder ◽  
Semantic Segmentation ◽  
Magnetic Resonance Images ◽  
Articular Disc

AbstractTemporomandibular disorders are typically accompanied by a number of clinical manifestations that involve pain and dysfunction of the masticatory muscles and temporomandibular joint. The most important subgroup of articular abnormalities in patients with temporomandibular disorders includes patients with different forms of articular disc displacement and deformation. Here, we propose a fully automated articular disc detection and segmentation system to support the diagnosis of temporomandibular disorder on magnetic resonance imaging. This system uses deep learning-based semantic segmentation approaches. The study included a total of 217 magnetic resonance images from 10 patients with anterior displacement of the articular disc and 10 healthy control subjects with normal articular discs. These images were used to evaluate three deep learning-based semantic segmentation approaches: our proposed convolutional neural network encoder-decoder named 3DiscNet (Detection for Displaced articular DISC using convolutional neural NETwork), U-Net, and SegNet-Basic. Of the three algorithms, 3DiscNet and SegNet-Basic showed comparably good metrics (Dice coefficient, sensitivity, and positive predictive value). This study provides a proof-of-concept for a fully automated deep learning-based segmentation methodology for articular discs on magnetic resonance images, and obtained promising initial results, indicating that the method could potentially be used in clinical practice for the assessment of temporomandibular disorders.

scholarly journals Automated Segmentation of Articular Disc of the Temporomandibular Joint in Magnetic Resonance Images Using Deep Learning: A Proof-of-Concept Study

2021 ◽  
Author(s):  
Shota Ito ◽  
Yuichi Mine ◽  
Yuki Yoshimi ◽  
Saori Takeda ◽  
Akari Tanaka ◽  
...  
Keyword(s):  
Deep Learning ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Temporomandibular Disorder ◽  
Semantic Segmentation ◽  
Magnetic Resonance Images ◽  
Automated Segmentation ◽  
Proof Of Concept ◽  
Articular Disc

Abstract Temporomandibular disorders are typically accompanied by a number of clinical manifestations that involve pain and dysfunction of the masticatory muscles and temporomandibular joint. The most important subgroup of articular abnormalities in patients with temporomandibular disorders includes patients with different forms of articular disc displacement and deformation. Here, we propose a fully automated articular disc detection and segmentation system to support the diagnosis of temporomandibular disorder on magnetic resonance imaging. This system uses deep learning-based semantic segmentation approaches. Two hundred and seventeen magnetic resonance images obtained from patients with normal or displaced articular discs were used to evaluate three deep learning-based semantic segmentation approaches: our proposed encoder-decoder CNN named 3DiscNet (Detection for Displaced articular DISC using convolutional neural NETwork), U-Net, and SegNet-Basic. Of the three algorithms, 3DiscNet and SegNet-Basic showed comparably good metrics (Dice coefficient, sensitivity, and PPV). This study provides a proof-of-concept for a fully automated segmentation methodology of the articular disc on MR images with deep learning, and obtained promising initial results indicating that it could potentially be used in clinical practice for the assessment of temporomandibular disorders.

scholarly journals Occlusal stabilization appliance: evaluation of its efficacy in the treatment of temporomandibular disorders

2004 ◽  
Vol 12 (3) ◽  
pp. 238-243 ◽  
Author(s):  
Elisa Emi Tanaka ◽  
Emiko Saito Arita ◽  
Bunji Shibayama
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Imaging Modality ◽  
Clinical Status ◽  
Signs And Symptoms ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Evaluation

Occlusal stabilization appliances or splints are the most widely employed method for treatment of temporomandibular disorders (TMD). Magnetic Resonance Imaging (MRI) is the most indicated imaging modality to evaluate the components of the temporomandibular joint (TMJ). Forty patients with signs and symptoms of temporomandibular disorders were treated with splints for a mean period of 12 months, comprising regular semimonthly follow-ups. After stabilization of the clinical status, occlusal adjustments and MRI evaluation were performed. It was concluded that the success of this kind of treatment are related to the total (70%) or partial improvement (22.5%) of painful symptomatology and to the functional reestablishment of the craniomandibular complex. The MRI allowed evaluation and also the conclusion that the splints provide conditions for the organism to develop means to resist to the temporomandibular disorders by means of elimination of several etiologic factors. Moreover, after treatment the patients are able to cope with disc displacements with larger or smaller tolerance.

Biochemical analysis of the articular disc of the temporomandibular joint with magnetic resonance T2 mapping: a feasibility study

2013 ◽  
Vol 18 (7) ◽  
pp. 1865-1871 ◽  
Author(s):  
Martina Schmid-Schwap ◽  
Margit Bristela ◽  
Elisabeth Pittschieler ◽  
Astrid Skolka ◽  
Pavol Szomolanyi ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Feasibility Study ◽  
Biochemical Analysis ◽  
T2 Mapping ◽  
Articular Disc

scholarly journals Evaluation of TMJ articular eminence morphology and disc patterns in patients with disc displacement in MRI

2007 ◽  
Vol 21 (3) ◽  
pp. 265-271 ◽  
Author(s):  
Fabio Henrique Hirata ◽  
Antônio Sérgio Guimarães ◽  
Jefferson Xavier de Oliveira ◽  
Carla Ruffeil Moreira ◽  
Evangelo Tadeu Terra Ferreira ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Contralateral Side ◽  
Magnetic Resonance Images ◽  
Disc Displacement ◽  
Articular Disc ◽  
Articular Eminence ◽  
Disc Position ◽  
Disc Configuration ◽  
Disc Displacement With Reduction

The aim of this study was to assess the shape of the temporomandibular joint (TMJ) articular eminence and the articular disc configuration and position in patients with disc displacement. TMJ magnetic resonance images (MRI) of 14 patients with bilateral disc displacement without unilateral reduction were analyzed. Articular eminence morphology was characterized as box, sigmoid, flattened, or deformed. Articular disc configuration was divided into biconcave, biplanar, biconvex, hemiconvex or folded, and its position, as "a" (superior), "b" (anterosuperior), "c" (anterior) or "d" (anteroinferior). The images were divided and the sides with disc displacement with reduction (DDWR) and without reduction (DDWOR) were compared. Regarding articular eminence shape, the sigmoid form presented the greatest incidence, followed by the box form, in the DDWR side, although this was not statistically significant. In the DDWOR side, the flattened shape was the most frequent (p = 0.041). As to disc configuration, the biconcave shape was found in 79% of the DDWR cases (p = 0.001) and the folded type predominated in 43% of the DDWOR cases (p = 0.008). As to disc position, in the DDWR side, "b" (anterosuperior position) was the most frequent (p = 0.001), whereas in the DDWOR side, "d" (anteroinferior position) was the most often observed (p = 0.001). The side of the patient with altered disc configuration and smaller shape of TMJ articular eminence seems to be more likely to develop non-reducing disc displacement as compared to the contralateral side.

scholarly journals Diagnostic significance of magnetic resonance imaging in distinguishing temporomandibular disorders: a retrospective chart review

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Nuonuo Cong ◽  
Ning Wang ◽  
Shengyuan Huang ◽  
Taiqi Cheng ◽  
Xing Yan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Temporomandibular Joint ◽  
Old Age ◽  
Temporomandibular Disorders ◽  
Professional Training ◽  
Retrospective Chart Review ◽  
Age Group ◽  
Resonance Imaging ◽  
Diagnostic Significance

Abstract Background This study was to evaluate the diagnostic significance of Magnetic Resonance Imaging (MRI) in distinguishing temporomandibular disorders (TMD). Methods A total of 684 patients with TMD were included in the study. Diagnosis for TMD was conducted according to the international criteria. Two professional radiologists were selected for professional training, and the Kappa values were compared for the diagnosis results to determine the consistency of the diagnosis. Then MRI images of these 684 patients were analyzed and the diagnosis results were obtained. Results MRI can be used for the diagnosis of TMD. There were significantly more females (518 cases) than males (166 cases) with TMD; Disc displacement with/without reduction is more common in the youth group, with the majority aged 20–30 years. The highest incidence of temporomandibular joint osteoarthrosis is in the 60-year-old age group, followed by the 70-year-old age group. Conclusions Bilateral temporomandibular joint MRI can clearly show their changes; there are significantly more female with TMD than male; osteoarthritis has a significant correlation with age.

Sign in / Sign up

Export Citation Format

Share Document