MORPHOMETRIC PARAMETERS OF THE TEMPOROMANDIBULAR JOINT ELEMENTS AT ITS CHRONIC LUXATION’S AND SUBLUXATION

The paper notes the relevance of the temporomandibular joint, in particular, chronic dislocation and subluxation. The aim of the study was to study morphometric parameters of the temporomandibular joint using computed tomography and to identify anatomical and topographical features of those with chronic dislocation and subluxation of the joint. The article describes the method of measurement of bone structures, which we studied 27 patients with chronic dislocation and subluxation of the temporomandibular joint. This study allows to conclude that in patients with dislocation and subluxation of the temporomandibular joint have structural violations of the elements of the joint, their proportions that have a significant asymmetry.

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

Current Issues in Pharmacy and Medical Sciences ◽

10.1515/cipms-2015-0074 ◽

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.

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SPECIFIC CHARACTERISTICS OF BONE STRUCTURES ON CT-SCANS OF PATIENTS WITH SINONASAL INVERTED PAPILLOMAS

Problems in oncology ◽

10.37469/0507-3758-2019-65-4-590-595 ◽

2019 ◽

Vol 65 (4) ◽

pp. 590-595

Author(s):

Arkadiy Naumenko ◽

Kseniya Sapova ◽

Oleg Konoplev ◽

Svetlana Astashchenko ◽

Igor Chernushevich

Keyword(s):

Computed Tomography ◽

Tumor Recurrence ◽

Inverted Papilloma ◽

Ct Scans ◽

Precise Localization ◽

Sinonasal Inverted Papilloma ◽

Bone Structures ◽

Inverted Papillomas

Precise localization and excision of the originating site of a sinonasal inverted papilloma is essential for decreasing tumor recurrence. In this study we evaluated the use of preoperative computed tomography (CT) to pinpoint the attachment/origi-nating sites of the tumor.

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New Method for Analysis of the Temporomandibular Joint Using Cone Beam Computed Tomography

Sensors ◽

10.3390/s21093070 ◽

2021 ◽

Vol 21 (9) ◽

pp. 3070

Author(s):

Sebastian Iwaszenko ◽

Jakub Munk ◽

Stefan Baron ◽

Adam Smoliński

Keyword(s):

Computed Tomography ◽

Temporomandibular Joint ◽

Cross Section ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Section Plane ◽

New Approach ◽

Volume Of Interest ◽

Gap Width

Modern dentistry commonly uses a variety of imaging methods to support diagnosis and treatment. Among them, cone beam computed tomography (CBCT) is particularly useful in presenting head structures, such as the temporomandibular joint (TMJ). The determination of the morphology of the joint is an important part of the diagnosis as well as the monitoring of the treatment results. It can be accomplished by measurement of the TMJ gap width at three selected places, taken at a specific cross-section. This study presents a new approach to these measurements. First, the CBCT images are denoised using curvilinear methods, and the volume of interest is determined. Then, the orientation of the vertical cross-section plane is computed based on segmented axial sections of the TMJ head. Finally, the cross-section plane is used to determine the standardized locations, at which the width of the gap between condyle and fossa is measured. The elaborated method was tested on selected TMJ CBCT scans with satisfactory results. The proposed solution lays the basis for the development of an autonomous method of TMJ index identification.

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Temporomandibular Joint Osseous Morphology of Class I and Class II Malocclusions in the Normal Skeletal Pattern: A Cone-Beam Computed Tomography Study

Diagnostics ◽

10.3390/diagnostics11030541 ◽

2021 ◽

Vol 11 (3) ◽

pp. 541

Author(s):

Xiao-Chuan Fan ◽

Lin-Sha Ma ◽

Li Chen ◽

Diwakar Singh ◽

Xiaohui Rausch-Fan ◽

...

Keyword(s):

Computed Tomography ◽

Temporomandibular Joint ◽

Cone Beam Computed Tomography ◽

Class Ii ◽

Class I ◽

Cone Beam ◽

Glenoid Fossa ◽

Linear Measurements ◽

Significant Difference ◽

Skeletal Pattern

(1) Background—The aim of the present study was to evaluate the correlation between the temporomandibular joint (TMJ) osseous morphology of normal skeletal pattern individuals with different dental malocclusions by using cone-beam computed tomography (CBCT). (2) Methods—The CBCT images of bilateral TMJs in 67 subjects with skeletal class I and average mandibular angle (26 males and 41 females, age range 20–49 years) were evaluated in this study. The subjects were divided into class I, class II division 1, and class II division 2 according to the molar relationship and retroclination of the maxillary incisors. Angular and linear measurements of TMJ were evaluated and the differences between the groups were statistically analyzed. (3) Results—Intragroup comparisons showed statistical differences for articular eminence inclination, the width of the glenoid fossa, the ratio of the width of the glenoid fossa to the depth of the glenoid fossa, the condylar angle, and the intercondylar angle between the malocclusion groups. The measurements of the glenoid fossa shape showed no significant difference between the left and right sides. Females showed more differences in the morphological parameters of TMJ between the three malocclusion groups than the males. (4) Conclusion—The present study revealed differences in the TMJ osseous morphology between dental class I and class II malocclusions in the normal skeletal pattern.

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Surgical considerations during cochlear implantation: the utility of temporal bone computed tomography

The Journal of Laryngology & Otology ◽

10.1017/s0022215121000232 ◽

2021 ◽

pp. 1-8

Author(s):

Beomcho Jun ◽

Sunwha Song

Keyword(s):

Computed Tomography ◽

Temporal Bone ◽

Cochlear Implantation ◽

Round Window ◽

Three Dimensional ◽

Electrode Placement ◽

Posterior Tympanotomy ◽

Electrode Insertion ◽

Window Approach ◽

Bone Structures

Abstract Objective This paper describes the construction of portals for electrode placement during cochlear implantation and emphasises the utility of pre-operative temporal bone three-dimensional computed tomography. Methods Temporal bone three-dimensional computed tomography was used to plan portal creation for electrode insertion. Results Pre-operative temporal bone three-dimensional computed tomography can be used to determine the orientation of temporal bone structures, which is important for mastoidectomy, posterior tympanotomy and cochleostomy, and when using the round window approach. Conclusion It is essential to create appropriate portals (from the mastoid cortex to the cochlea) in a step-by-step manner, to ensure the safe insertion of electrodes into the scala tympani. Pre-operative three-dimensional temporal bone computed tomography is invaluable in this respect.

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