Relationship between articular eminence inclination and alterations of the mandibular condyle: a CBCT study

Cruz, Saione; Melo, Saulo Leonardo Sousa; Melo, Daniela Pita de; Freitas, Deborah Queiroz; Campos, Paulo Sérgio Flores

doi:10.1590/1807-3107bor-2017.vol31.0025

Cited by 21 publications

(26 citation statements)

References 21 publications

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“…The different morphological variations of the TMJ components play an important role in understanding the TMJ's normality, function, and potential diseases to provide proper management and treatment (11). Several studies have investigated the relationship between the morphological and morphometric variations of the TMJ associating them with pathological changes according to sex and age groups (15,20,26,37). The TMJ is constantly remodeling according to the individual's development and adapting according to the non-functional changes that occur in the stomatognathic system.…”

Section: Discussionmentioning

confidence: 99%

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The morphometric measurements of the temporomandibular joint

Melo¹,

Silva²,

Campos³

et al. 2021

Front Oral Maxillofac Med

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The temporomandibular joint (TMJ) is a synovial joint classified for its surface shape and complex biaxial movements as a ginglimoartrodial joint and presents the widest joint range of movements when compared with the other joints of the human body. The complexity of TMJ morphology has driven researchers to investigate its morphometric features and their relationship with temporomandibular disorders (TMD). Therefore, the knowledge of morphological and morphometric data of each bone component of the TMJ is of paramount importance for identifying bone changes related to the TMJ, in the presence of TMD in symptomatic and non-symptomatic patients. This literature review aims to assess previous studies on the TMJ bone structures morphological and morphometric findings and discuss what these findings implicate on TMDs. The assessed studies varied in sample size and categorization, and measurement methodologies [measurements done directly on specimen, image modality-computed tomography (CT), cone beam computed tomography (CBCT), magnetic resonance imaging (MRI)], study method of choice and main morphometric points). Morphometric measurements of the condyle, articular fossa and articular eminence were assessed in different planes (axial, sagittal and coronal). Male patients present higher condyle and glenoid fossa morphometric measurement values than female patients, however, when considering the articular eminence's inclination/steepness the gender difference is not conclusive. When more than one image method was assessed, a slight difference has been observed between the image modalities. It can be concluded that large, paired samples and longitudinal studies using non-ionizing images are still needed to assess the TMJ morphometric values and its association with internal disorders, age, ethnicity, and gender.

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Section: Discussionmentioning

confidence: 99%

“…Small samples undermine the internal and external validity of a study and large samples tend to transform small differences into statistically significant differences (18). When assessing the TMJ, each patient counts as two TMJs and sample sizes of the assessed literature varied from 11 to 800 (5,8,13,14,(19)(20)(21).…”

Section: Literature Reviewmentioning

confidence: 99%

The morphometric measurements of the temporomandibular joint

Melo¹,

Silva²,

Campos³

et al. 2021

Front Oral Maxillofac Med

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“…Previous researchers proposed that the AE might predispose to disc displacement. The shape of the AE is related to the development of TMJ disc displacement (7,19,28,(30)(31)(32). CBCT has been shown as an accurate and reliable method for the imaging of hard structures and linear measurements (3,16,30).…”

Section: Discussionmentioning

confidence: 99%

Cone Beam CT Evaluations of Condyle Shape and Age-Related Associations of Articular Eminence Morphology in Female TMD Patients

Akmansoy¹,

Yalçınkaya²

2019

ERD

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Aim:The aim of this study was to assess condyle shape and the relationship between age-related associations and articular eminence (AE) inclination in a group of female patients with temporomandibular disorder (TMD).Methods: CBCT images of 64 temporomandibular joints (TMJs) of 32 female TMD patients (18-45-year-old) were evaluated sagittally and coronally. Condyle shape was assessed visually and the inclination of AE was analyzed using with bestfit and top-roof methods. AE heights were also measured. The patients were grouped into two age groups: 18 to 30 -and 31 to 45-year-old. Data were statistically analyzed with SPSS software using Mann-Whitney-U test.Results: The most frequently observed condyle shape was flattened (39,1 %) in sagittal plane and triangular (43,8 %) in coronal plane. Triangular condyle shape was seen in 31.3% of condyles on coronal sections. No statistically significant differences were seen in two different age groups comparing AE inclination and height.Conclusion: Triangular and flattened condyles were the most frequent condyle shape in female TMD patients. Although AE inclination was highest between the ages of 18-30, there was no statistical significance.

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“…The condylar path is more vertical if the AE slope is steep, while it is less vertical when it is flat [ 6 ]. AE features, including shape, influence mandibular movement, which is also conditioned by dental absence [ 4 , 7 ], age [ 4 , 8 , 9 ], skeletal malocclusion [ 5 , 10 ], sex [ 8 , 11 ], and masticatory loads [ 12 ]. AE morphological variations may lead to TMJ mechanical alterations and may function as predisposing factors to internal dysfunctions [ 13 , 14 ], such as anterior disk displacements (ADD) [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Articular Eminence Inclination in Normo-Divergent Subjects with Different Skeletal Classes through CBCT

Moscagiuri

Caroccia

Lopes

et al. 2021

IJERPH

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(1) We aimed to compare articular eminence inclination (AEI) in normo-divergent subjects (SN^GoGn = 32° ± 5°), with different anteroposterior sagittal skeletal classes through a cone beam computed generated tomography (CBCT). (2) In this cross-sectional study, CBCT records were retrospectively analysed. From the original sample of 52 CBCT records, 33 records of normo-divergent adult subjects were selected (11 Class I, 13 Class II and 9 Class III). On mid-sagittal section of the Temporomandibular Joint (TMJ) on both sides, AEI was calculated by graphic method. (3) The Kruskal–Wallis test was used to evaluate any difference between AEI on both left and right sides in the three groups. No statistically significant difference was observed on either the right side (p = 0.174) or the left side (p = 0.624). (4) Articular eminence inclination seems to be not related with skeletal class. Given the lack of significance in the observed differences between AEI and skeletal classes, we believe that future studies should focus on assessing possible relationships between AEI and different vertical skeletal patterns.

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Relationship between articular eminence inclination and alterations of the mandibular condyle: a CBCT study

Cited by 21 publications

References 21 publications

The morphometric measurements of the temporomandibular joint

The morphometric measurements of the temporomandibular joint

Cone Beam CT Evaluations of Condyle Shape and Age-Related Associations of Articular Eminence Morphology in Female TMD Patients

Evaluation of Articular Eminence Inclination in Normo-Divergent Subjects with Different Skeletal Classes through CBCT

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