Axial temporomandibular joint morphology: A correlative study of radiographic and gross anatomic findings

Ebner, Kimberly A.; Otis, Linda L.; Zakhary, Rizkalla; Danforth, Robert A.

doi:10.1016/0030-4220(90)90336-q

Cited by 18 publications

(7 citation statements)

References 26 publications

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“…The authors observed that HCA increased in the presence of TMJ OA, but no relationship between HCA and different condylar positions. In literature, various radiological imaging modalities such as submentovertex projection radiography (SPR) [3,8,25,36,38], magnetic resonance imaging (MRI) [6,12,13,29,32,35], computed tomography (CT) [5,9,15,23,27,33], and CBCT [2,14] have been used alone or combined in studies for measuring the HCA to date. In studies that used SPR, the HCA was found associated with disc position while not associated with osseous changes [8,25,36,38].…”

Section: Discussionmentioning

confidence: 99%

“…In literature, various radiological imaging modalities such as submentovertex projection radiography (SPR) [3,8,25,36,38], magnetic resonance imaging (MRI) [6,12,13,29,32,35], computed tomography (CT) [5,9,15,23,27,33], and CBCT [2,14] have been used alone or combined in studies for measuring the HCA to date. In studies that used SPR, the HCA was found associated with disc position while not associated with osseous changes [8,25,36,38]. In MRI studies, generally, a greater mean HCA was reported in TMJs with disc displacement and osseous changes [6,13,27,29,31,35,36].…”

Section: Discussionmentioning

confidence: 99%

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Does the horizontal condylar angle have a relationship to temporomandibular joint osteoarthritis and condylar position? A cone-beam computed tomography study

et al. 2022

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Background:To evaluate the relationship between the horizontal condylar angle (HCA), temporomandibular joint osteoarthritis (TMJ OA), and condylar position on cone-beam computed tomography (CBCT) images. Materials and methods:Based on TMJ OA, joints were classified as affected and the unaffected. According to the OA condition of their joints, three groups of patients were formed: control group (n = 159, 41.1%), unilateral group (n = 121, 31.3%), and bilateral group (n = 107, 27.6%). In total, the HCAs of 774 TMJs of 387 patients were measured and their condylar positions were determined as concentric (n = 184, 23.8%), posterior (n = 338, 43.7%), and anterior (n = 252, 32.5%). Results:The mean HCA of the bilateral group (22.7° ± 7.6°) was greater than those in both the control (19.5° ± 6.4°) and the unilateral (20.5° ± 6.5°) groups (p < 0.05).However, the difference was not statistically significant between the control and unilateral group (p > 0.05). In total patients, unlike the unilateral group, the affected 1 joints had a greater mean HCA than the unaffected joints (p < 0.05). The mean HCAs of the joints according to the condylar position were as concentric: 20.6° ± 6.7°, posterior: 21.1° ± 7.8°, and anterior: 20.2° ± 7.9° (p > 0.05). Conclusions:While the HCA increased in the presence of TMJ OA, no relationship was found between HCA and three different condylar positions.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Does the horizontal condylar angle have a relationship to temporomandibular joint osteoarthritis and condylar position? A cone-beam computed tomography study

et al. 2022

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“…Until recently, the cause of number of TMJ disorders had been primarily attributed to changes in the joint's morphology, any variation from what was considered normal was considered to be pathological. However, it has since been determined that an individual may have a TMJ morphology that is considerably different to that which is considered normal, without having any form of pain or a disorder (Ebner et al, 1990;Santler et al, 1993;Ferrario et al, 1997). Given the natural variation within humans, and the pronounced variation in the shape of the mandibular condyle among animals, there is indication that the variation in the shape of the condyle between individuals of the same species may be a result of different functional loading and demands on the joint (Watt and Williams, 1951;Kiliaridis et al, 1999).…”

Section: Introductionmentioning

confidence: 98%

Influence of food consistency on growth and morphology of the mandibular condyle

2011

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The objective of this study was to determine if variation in the shape and mineralization of the mandibular condyle are the result of natural adaptation in response to different functional loading demands. Eight female Kuni Kuni piglets were randomly assigned to two groups of four, receiving either a soft or hard diet. Each animal was given three separate doses of vital stains intravenously at set time points during the study. At 8.5 months, animals were euthanized and temporomandibular joints (TMJs) were excised. Histological analysis was used to measure the amount of new bone deposition in the anterior, central, and posterior regions of the mandibular condyle. Backscatter electron (BSE) imaging was used as a semiquantitative estimate of bone mineralization in these two diet groups. Histology revealed that the degree of new bone deposition in the hard-diet group was significantly (n = 4, P < 0.001, paired t-test) higher than that of the soft-diet group. Also, the majority (87%) of animals fed a hard diet tended to show greater new bone deposition on the leftside in comparison to the right, indicating a chewing preference for the left side. In both groups, the degree of new bone deposition was significantly (P < 0.01) higher in the posterior area than in other regions. BSE imaging corroborated basic histology results, with significantly (P < 0.01) higher mineralization levels detected in the hard-diet group. These findings indicate that diet consistency has a small but significant effect on the rate of bone deposition in the mandibular condyle.

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“…In previous research, morphological characteristics of CMA particularly condyle and mandible in association with malocclusion have been studied with various imaging modalities. Diagnostic accuracy with the conventional two dimensional radiography is limited because of difficulties in imaging of the points, the location of condyle within cranial base result in bony superimposition, and structural distortion in film techniques [ 7 ]. All such difficulties of Craniomandibular articulation imaging might be eliminated by using computed tomography (CT), which allows precise visualization of anatomic details.…”

Section: Introductionmentioning

confidence: 99%

Computed Tomography Evaluation of Craniomandibular Articulation in Class II Division 1 Malocclusion and Class I Normal Occlusion Subjects in North Indian Population

et al. 2012

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Objective. The purpose of this study is to investigate the Craniomandibular articulation morphology and position of condyle in mandibular fossae in Angle's class I normal occlusion and Angle's class II division 1 malocclusion. Materials and Methods. The present study was conducted on 40 subjects with 20 subjects in each group, and the computed tomography images were obtained using spiral computed tomography technique. Each measurement was compared by two-factor analysis of variance (ANOVA) while changes in anterior and posterior joint spaces were done by paired t-test. Results. Statistically significant anterior positioning of condyle (P > 0.05) was observed in class I normal malocclusion, and it was significant only on right side in class II division 1 malocclusion. Conclusions. There was no difference found in the condylar process and joint morphology between right and left sides of both Angle's Class I normal occlusion and Angle's class II division 1 malocclusion. Evaluation of the position of the condyles in their respective mandibular fossae showed concentric position with a tendency towards anterior positioning for both right and left sides of the subjects with Angle's Class I normal occlusion as well as subjects with Angle's class II division 1 malocclusion.

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Axial temporomandibular joint morphology: A correlative study of radiographic and gross anatomic findings

Cited by 18 publications

References 26 publications

Does the horizontal condylar angle have a relationship to temporomandibular joint osteoarthritis and condylar position? A cone-beam computed tomography study

Does the horizontal condylar angle have a relationship to temporomandibular joint osteoarthritis and condylar position? A cone-beam computed tomography study

Influence of food consistency on growth and morphology of the mandibular condyle

Computed Tomography Evaluation of Craniomandibular Articulation in Class II Division 1 Malocclusion and Class I Normal Occlusion Subjects in North Indian Population

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