scholarly journals Temporomandibular joint assessment in patients with articular disc displacement by way of computed tomography - radiological parameters of shape, size and location of mandibular heads

2015 ◽  
Vol 28 (3) ◽  
pp. 208-211
Author(s):  
Anna Szabelska ◽  
Katarzyna Sarna-Bos ◽  
Grzegorz Staskiewicz ◽  
Janusz Borowicz ◽  
Anna Szabelska ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Study Groups ◽  
Temporomandibular Joint Disorders ◽  
Control Group ◽  
Disc Displacement ◽  
Articular Disc ◽  
Temporomandibular Joint Disc ◽  
Radiological Parameters ◽  
Bone Structures

Abstract Conventional and modern methods of radiological imaging are often used in the diagnosis of temporomandibular joint disorders, and the CT technique is particularly characterized by an excellent visualization of bony structures. The aim of the study was to show the importance and role of CT in the evaluation of TMJ bone structures in both patients with articular disc displacement and in a group of healthy subjects. Both study groups were assessed with the use of the transverse plane. Herein, multi-slice spiral computed tomography was performed in 47 subjects. These individuals were qualified for CT by way of magnetic resonance imaging, due to their being diagnosed with a displacement of their temporomandibular joint disc. The product of our study is presented as a set of tables. These are comparisons of radiological parameters based on the shape, size and location of the mandibular head, in the examined patients, in a control group, and with regard to sex. The results of our work indicate that CT can be successfully used in the imaging of TMJ bone structures, specifically, the condylar process of the mandibular head and the joint socket. However, statistically significant differences of the utilized parameters between patients with articular disc displacement and controls, warrant further analysis of this issue.

scholarly journals The Efficiency of Anterior Repositioning Splints in the Management of Pain Related to Temporomandibular Joint Disc Displacement with Reduction

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Malgorzata Pihut ◽  
Malgorzata Gorecka ◽  
Piotr Ceranowicz ◽  
Mieszko Wieckiewicz
Keyword(s):  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Rating Scale ◽  
Numerical Rating Scale ◽  
Masticatory Muscles ◽  
Control Group ◽  
Study Group ◽  
Disc Displacement ◽  
Temporomandibular Joint Disc ◽  
Disc Displacement With Reduction

Background and Objective. Intra-articular temporomandibular disorders are often related to pain in the area of the temporomandibular joint, ear, and temple. The aim of the study was to investigate the efficiency of anterior repositioning splints in decreasing pain related to temporomandibular joint disc displacement with reduction. Methods. The research material consisted of 112 patients, aged 24 to 45 years, of both genders, who reported for treatment at the Consulting Room of Temporomandibular Joint Dysfunctions at the Jagiellonian University in Cracow between 2014 and 2016 due to pain in the area of the temporomandibular joint(s) and noise(s) of temporomandibular joint(s) present during jaw movements with comorbid contracture of masticatory muscles. Subjects were examined according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) protocol and, after diagnosis of painful disc displacement with reduction and masticatory muscle contracture, they were assigned randomly to either the study or control groups (56 patients in each). In the study group, we used an anterior repositioning splint on the full lower arch for about 20 hours usage over a 4-month period. In the control group, a noninvasive therapy was applied using a biostimulation laser over 12 sessions performed every second day on the area of both temporomandibular joints with mouth open and while performing muscle self-exercises with a dominant protrusive position of the mandible. Pain intensity was evaluated using the Verbal Numerical Rating Scale (VNRS) immediately before the treatment and then after 4 and 16 weeks. The obtained data were analyzed using the Mann–Whitney U test p≤0.005. Results. The VNRS values reported during the final examination for the study group were significantly lower than for the control group p=0.0004. Conclusions. The anterior repositioning splint is an efficient tool in decreasing pain related to disc displacement with reduction. This trial is registered with Clinicaltrials.gov NCT03057262.

scholarly journals Association of Estrogen Receptor 1 and Tumor Necrosis Factor α Polymorphisms with Temporomandibular Joint Anterior Disc Displacement without Reduction

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Bartosz Dalewski ◽  
Agata Kamińska ◽  
Katarzyna Białkowska ◽  
Anna Jakubowska ◽  
Ewa Sobolewska
Keyword(s):  
Temporomandibular Joint ◽  
Temporomandibular Joint Disorders ◽  
Control Group ◽  
Disc Displacement ◽  
Anterior Disc Displacement ◽  
Tnf Α ◽  
Factor Α ◽  
Necrosis Factor

Objectives. The aim of this study was to investigate the role of ESR1 rs1643821 and TNF-α rs1800629 as potential genetic factors regulating anterior disc displacement without reduction-mediated inflammatory pathway. Background. The temporomandibular joint is a complex synovial joint that allows mandibular movement in three directions. Although temporomandibular disorders are widespread, limited data is available on the biochemical characteristics of the displaced disc and quality of the surrounding soft tissue. Changes in degenerative tissue provoke disc displacement which involves secretion of inflammatory markers and sequential conversion of fibroblast-like cells into chondrocyte-like cells. Due to the high occurrence in female adolescents, the potential role of sex hormones in temporomandibular joint disorders has been speculated. Furthermore, anterior disc displacement without reduction severely affects the quality of life. Methods. 124 Caucasian patients with a history of at least one anterior disc displacement without reduction within 3 months were enrolled. Anterior disc displacement without reduction was diagnosed based on clinical examination, diagnostic criteria (DC)/TMD, and cone-beam computed tomography/magnetic resonance imaging (CBCT/MRI). The control group consisted of 126 patients with no temporomandibular joint disorders. Genotyping of two single nucleotide polymorphisms, estrogen receptor 1 (ESR1) rs1643821, and tumor necrosis factor α (TNF-α) rs1800629 was performed. Results. ESR1 rs1643821 showed significant P values (using chi-square analysis) revealing the difference in anterior disc displacement without reduction frequencies while TNF-α rs1800629 polymorphism was found to be statistically insignificant when compared to the control group. Furthermore, patients with a genotype of ESR1 rs1643821 showed a decreased probability ( OR = 0.412 ) against anterior disc displacement without reduction when compared to the GG genotype ( OR = 1 ). Conclusion. ESR1 rs1643821 with A allele frequency was lower in patients with anterior disc displacement without reduction compared to the control group. Thus, the rs1643821 variant is significantly associated with susceptibility to the anterior disc displacement without a reduction in European Caucasians. Conversely, TNF-α rs1800629 was a statistically insignificant factor against anterior disc displacement without reduction when compared to the control group.

Evaluation of effusion and articular disc positioning after two different arthrocentesis techniques in patients with temporomandibular joint disc displacement without reduction

CRANIO® ◽  
2018 ◽  
Vol 38 (4) ◽  
pp. 256-263 ◽  
Author(s):  
Primo Guilherme Vargas Pasqual ◽  
Rodrigo Lorenzi Poluha ◽  
Ênio Tadashi Setogutti ◽  
Eduardo Grossmann
Keyword(s):  
Temporomandibular Joint ◽  
Disc Displacement ◽  
Articular Disc ◽  
Temporomandibular Joint Disc

scholarly journals Evaluating the temporomandibular joint disc using calcium-suppressed technique in dual-layer detector computed tomography

2019 ◽  
Vol 48 (3) ◽  
pp. 030006051989133
Author(s):  
Xiaohuan Zhang ◽  
Mengqi Liu ◽  
Yanyi Wang ◽  
Weiwei Deng ◽  
Houmin Tan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Proton Density ◽  
P Value ◽  
Disc Displacement ◽  
Mr Images ◽  
Posterior Displacement ◽  
Temporomandibular Joint Disc ◽  
Significant Difference ◽  
Tmj Disc

Objectives To investigate the application value of the calcium-suppressed (CaSupp) images of dual-layer detector computed tomography (DLCT) in the evaluation of the temporomandibular joint (TMJ) discs. Methods Thirty-three healthy subjects underwent DLCT and magnetic resonance imaging (MRI) examinations. CaSupp images were reconstructed from the spectral-based images using a calcium suppression algorithm. The location, morphology, and thickness of the posterior band of the TMJ discs were evaluated on the oblique sagittal proton-density weighted images and CaSupp images. Results Of the 66 TMJ discs, anterior displacement was observed on 9 TMJ discs on MR images and 6 TMJ discs on CaSupp images, and posterior displacement was present on 3 TMJ discs on MR and CaSupp images. No significant difference was observed in TMJ disc displacement between MR images and CaSupp images ( P value = 0.730). The TMJ discs without displacement had no significant difference in the thickness of the posterior band between the MR and CaSupp images ( P value = 0.401). Conclusions The calcium-suppressed technique in DLCT may be a simple and preliminary way to evaluate the TMJ disc displacement and structure.

Natural Course of Untreated Symptomatic Temporomandibular Joint Disc Displacement without Reduction

1998 ◽  
Vol 77 (2) ◽  
pp. 361-365 ◽  
Author(s):  
K. Kurita ◽  
P.-L. Westesson ◽  
H. Yuasa ◽  
M. Toyama ◽  
J. Machida ◽  
...  
Keyword(s):  
Temporomandibular Joint ◽  
Natural Course ◽  
Disc Displacement ◽  
Temporomandibular Joint Disc

scholarly journals Management of Internal Derangement of Temporomandibular Joint Disc Displacement with Reduction Using Two Different Lines of Treatment

2021 ◽  
Vol 24 (2) ◽  
pp. 8
Author(s):  
Mohamed Ahmed Helal ◽  
Shoroog Hassan Agou ◽  
Amr Bayoumi ◽  
Ahmed Imam ◽  
Ali Habiballah Hassan
Keyword(s):  
Range Of Motion ◽  
Temporomandibular Joint ◽  
Lower Cost ◽  
Internal Derangement ◽  
Disc Displacement ◽  
Temporomandibular Joint Disc ◽  
Non Invasive ◽  
Anterior Disc Displacement ◽  
Disc Displacement With Reduction

Objetive: This study was to compare the effectiveness of arthrocentesis versus the insertion of anterior repositioning splint (ARS) in improving the mandibular range of motion (MRM) for patients with the temporomandibular joint (TMJ) anterior disc displacement with reduction (ADDwR). Methods: 36 patients diagnosed as ADDwR were recruited and divided randomly into two groups. The first group (G1) was treated by arthrocentesis, and the second (G2) was treated using ARS. All patients were reexamined after six months. Results: Except that for protrusive movement, there were significant differences between the two groups for the percentage changes of the MRM as measured by the amount of pain free opening, unassisted opening, maximum assisted opening, right lateral and left lateral movements (p < 0.05). Conclusion: Within the context of the current study, the non-invasive, lower cost ARS, provided better results in improving the MRM when managing ADDwR cases.   Keywords Arthrocentesis; Anterior repositioning splint; TMD; Internal derangement; Anterior disc displacement; Mandibular range of motion.

scholarly journals A Morphometric Analysis of Intra-articular Disc of Temporomandibular Joints in Cadavers

2021 ◽  
Author(s):  
Pratik Ashokkumar Agrawal ◽  
Navin S Shah ◽  
Ramnarayan A Gandotra ◽  
Karan Vasantray Panchal ◽  
Rishabh Navin Shah
Keyword(s):  
Temporomandibular Joint ◽  
Anatomic Variation ◽  
Maxillofacial Surgery ◽  
Temporomandibular Joint Disorders ◽  
Research Centre ◽  
Oral And Maxillofacial Surgery ◽  
Articular Disc ◽  
Chi Square ◽  
Temporomandibular Joints ◽  
Human Cadavers

Introduction: Temporomandibular Joint (TMJ) has been a controversial topic in Oral and Maxillofacial Surgery speciality especially regarding temporomandibular joint disorders and internal derangement of articular disc. The aetiology behind it has been related to the anatomic variations of the disc and its impact on the functioning of the articular disc. To understand such anatomic variation, the study has been conducted that will help future maxillofacial surgeon’s in designing accurate prosthetic articular disc that will improve the overall mechanics of the functioning of the prosthetic disc. Aim: To analyse the morphometric variations of the intra-articular disc in terms of circumference of the disc, perforations and their thickness within the disc in cadavers. Materials and Methods: The present observational study was carried out on cadavers in the Department of Anatomy. SBKS Medical College and Research Centre, Sumandeep Vidyapeeth University, Gujarat, India. The study was done from January 2017 to October 2018. Temporomandibular joints were dissected bilaterally from 10 human cadavers, i.e., 20 articular discs. The disc was removed and was measured with the help of thread, vernier callipers and standardised metallic scale and the circumference and thickness in the disc were evaluated. Descriptive statistical test was used and Chi-square test was applied. Results: Mean thickness of disc, both in males as well as females ranged from 1.4-2.0 mm in the Posterio-Medial (PM) and Posterio- Lateral (PL) region, while in Anterio-Medial (AM) and Anterio- Lateral (AL) region it ranged from 1.6-1.8 mm. Maximum length of disc ranged from 12-13 mm in anterio-posterio dimension while in Medio-Lateral (ML) it was 22-23 mm. Conclusion: The study gives an indepth knowledge about the various morphometric variations of articular disc and also shows its impact on the functioning of the disc. The study also directs maxillofacial surgeons to design prosthetic articular disc with greater accuracy and anatomical knowledge so that the procedures like surgical replacement of the disc can be carried out with greater potency and efficacy for the betterment of the patient.

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