Diagnosis of simulated condylar bone defects using panoramic radiography, spiral tomography and cone-beam computed tomography: A comparison study

Salemi, Fatemeh; Shokri, Abbas; Mortazavi, Hamed; Baharvand, Maryam

doi:10.4317/jced.51736

Cited by 11 publications

(10 citation statements)

References 23 publications

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“…It allows more accurate visualization of complicated anatomic structures with less radiation exposure, shorter scan time, and lower operating cost than does conventional multislice CT, 14 15 especially for analyzing TMJ morphology, bone defects, and position. 16 Compared with current cephalometric and panoramic imaging techniques, CBCT was relatively unaffected by skull location. 17 However, Neiva et al 18 have shown that highly reliable values were obtained more often with multiplanar reconstruction models than with 3D reconstruction models.…”

Section: Discussionmentioning

confidence: 99%

Cone-beam computed tomographic evaluation of the temporomandibular joint and dental characteristics of patients with Class II subdivision malocclusion and asymmetry

Huang

et al. 2017

Korean J Orthod

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ObjectiveTreating Class II subdivision malocclusion with asymmetry has been a challenge for orthodontists because of the complicated characteristics of asymmetry. This study aimed to explore the characteristics of dental and skeletal asymmetry in Class II subdivision malocclusion, and to assess the relationship between the condyle-glenoid fossa and first molar.MethodsCone-beam computed tomographic images of 32 patients with Class II subdivision malocclusion were three-dimensionally reconstructed using the Mimics software. Forty-five anatomic landmarks on the reconstructed structures were selected and 27 linear and angular measurements were performed. Paired-samples t-tests were used to compare the average differences between the Class I and Class II sides; Pearson correlation coefficient (r) was used for analyzing the linear association.ResultsThe faciolingual crown angulation of the mandibular first molar (p < 0.05), sagittal position of the maxillary and mandibular first molars (p < 0.01), condylar head height (p < 0.01), condylar process height (p < 0.05), and angle of the posterior wall of the articular tubercle and coronal position of the glenoid fossa (p < 0.01) were significantly different between the two sides. The morphology and position of the condyle-glenoid fossa significantly correlated with the three-dimensional changes in the first molar.ConclusionsAsymmetry in the sagittal position of the maxillary and mandibular first molars between the two sides and significant lingual inclination of the mandibular first molar on the Class II side were the dental characteristics of Class II subdivision malocclusion. Condylar morphology and glenoid fossa position asymmetries were the major components of skeletal asymmetry and were well correlated with the three-dimensional position of the first molar.

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Section: Discussionmentioning

confidence: 99%

Cone-beam computed tomographic evaluation of the temporomandibular joint and dental characteristics of patients with Class II subdivision malocclusion and asymmetry

Huang

et al. 2017

Korean J Orthod

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“…1 Plain film radiography, conventional tomography, computed tomography (CT), conebeam computed tomography (CBCT), and magnetic resonance imaging (MRI) are different radiographic methods that have been used in previous studies for TMJ assessment. 6,7 Cone-beam computed tomography is suggested as a high resolution and precise 3-dimensional (3D) technique for analyzing the condylar position in the glenoid fossa. 8 Some of the reasons why CBCT is preferred when compared with other imaging techniques at the region of TMJ are as follows: 3D images, higher accuracy and a smaller slice thickness as compared to the conventional tomography and radiography 6 ; spatial resolution even higher than in the case of spiral CT 6 ; effective dose and scanning time, and cost lower than in spiral CT 6,8 ; the fact that MRI is not suitable for the evaluation of hard tissue.…”

Section: Introductionmentioning

confidence: 99%

Comparative assessment of condylar position in patients with temporomandibular disorder (TMD) and asymptomatic patients using cone-beam computed tomography

et al. 2019

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Background. Temporomandibular disorders (TMD) are the most common reason of non-dental pain in the orofacial region. A clinical examination of the temporomandibular joint (TMJ) with additional imaging is the most recommended procedure for TMD diagnosis. Objectives. The objective of this study was to evaluate the association between TMD and the condylar position in the glenoid fossa by examining a group of patients suffering from TMD compared with a control group of patients without TMD. In this study, we used cone-beam computed tomography (CBCT) images for measurements. Material and methods. Sixty-five symptomatic joints were selected from 48 patients with TMD. Sixtyfive joints were selected from a total of 96 asymptomatic joints in the control group. The superior, anterior and posterior area of the joint, and the steepness of the articular eminence were measured on the CBCT images. The data was analyzed using Pearson's χ 2 test. Results. The position of the condyle was significantly more posterior in the joints with TMD, and more anterior and centric in the asymptomatic joints. Statistically, the vertical position of the condyle and the steepness of the articular eminence had no significant relation with the occurrence of TMD. Conclusions. In this study, we observed that the posterior condylar position is more common in TMD patients, but it is not the reason for diagnosing TMD, and the reason of the posterior position of the condyle should be investigated before any decisions pertaining to treatment are made. In future, studies should focus on evaluating how the position of the condyle will change after the treatment of patients with TMD.

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“…The studies concluded that CBCT images provided superior reliability and greater accuracy than panoramic radiographs in the detection of condyle height or condylar cortical erosion, which is similar to the findings of the present study. [4,14,15] CBCT may be considered a valuable imaging tool for the identification of simulated bone lesions. The cross-sectional slices and axial or MPR images are highly accurate in the identification of simulated mandibular bone lesions proving to be useful for bone lesion assessment.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of the detection of simulated condylar lesions on panoramic radiography and cone-beam computed tomography

Mani¹,

Raghavan²,

Birur³

et al. 2018

JCRI

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Background: Degenerative temporomandibular joint (TMJ) disease is characterized by destruction of the articular surface of mandibular condyle. Aims and Objectives: The aim of the present study was to assess the smallest lesion on mandibular condyle that could be detected on panoramic radiograph compared to conebeam computed tomography (CBCT). Materials and Methods: A total of 15 dry human mandibles were included in the study. Three surgical carbide drill bits of diameters 1.8 mm, 2.3 mm, and 4.5 mm length were used to drill holes on anterior, posterior, lateral, medial, and superior surfaces of the condyles. Panoramic and CBCT images were obtained and evaluated by two observers to detect lesions. Interobserver variability was obtained by the application of Cohen's kappa coefficient statistical measure. Results: On panoramic images, kappa value showed fair (0.324), moderate (0.537), and substantial agreement (0.667) for small, shallow, and deeper lesion on condyle, respectively. 16.6% of small, 43.3% of shallow, and 46.3% of deeper lesions were visualized on panoramic images compared to CBCT images. These lesions were predominantly on the superior surface of the condyle. Conclusion: Panoramic radiography can be used to detect lesions on the superior surface of the condyle of more than 2.3 mm diameter or more than 4.5 mm depth. Additional imaging modality such as CBCT is recommended for TMJ degenerative disorders.

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Diagnosis of simulated condylar bone defects using panoramic radiography, spiral tomography and cone-beam computed tomography: A comparison study

Cited by 11 publications

References 23 publications

Cone-beam computed tomographic evaluation of the temporomandibular joint and dental characteristics of patients with Class II subdivision malocclusion and asymmetry

Cone-beam computed tomographic evaluation of the temporomandibular joint and dental characteristics of patients with Class II subdivision malocclusion and asymmetry

Comparative assessment of condylar position in patients with temporomandibular disorder (TMD) and asymptomatic patients using cone-beam computed tomography

Accuracy of the detection of simulated condylar lesions on panoramic radiography and cone-beam computed tomography

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