Low-dose cone-beam computed tomography in simulated condylar erosion detection: a diagnostic accuracy study

Abu-Taleb, Noha Saleh; ElBeshlawy, Dina

doi:10.1007/s11282-020-00474-7

Cited by 7 publications

(14 citation statements)

References 28 publications

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“…This suggests that CBCT imaging of the TMJ can be performed with low dose and low‐resolution exposure protocols without loss in diagnostic accuracy. Most investigators 6,7,9,10,16,17 have studied TMJ tomographic protocols in regard to dysmorphology associated with degenerative diseases, (e.g. erosion) and ignore other evaluations such as the evaluation of condylar dimension, position and excursion.…”

Section: Discussionmentioning

confidence: 99%

“…Computed tomography (CT) is the modality of choice to detect osseous alterations and the relationship between mandibular condyle and temporal fossa 5,6 . Cone‐beam CT (CBCT) is now most commonly used rather than CT due to lower radiation dose to the patient and higher spatial resolution 4,7 …”

Section: Introductionmentioning

confidence: 99%

“…5,6 Cone-beam CT (CBCT) is now most commonly used rather than CT due to lower radiation dose to the patient and higher spatial resolution. 4,7 CBCT imaging is usually performed using manufacturers' preset acquisition parameters. These settings are often determined empirically without regard to optimisation, the basis of the the 'As Low As Diagnostically Acceptable' principle.…”

Section: Introductionmentioning

confidence: 99%

“…These settings are often determined empirically without regard to optimisation, the basis of the the 'As Low As Diagnostically Acceptable' principle. 8 Since exposure parameters are also related to the radiation doses delivered to the patient, 7 they should be optimised to apply the lowest dose possible whilst maintaining image quality to allow proper diagnosis. 9 Currently, no investigations have reported on the minimal exposure settings on CBCT necessary to adequately evaluate the morphologic and functional aspects of the TMJ, such as osseous alterations related to degenerative joint diseases and condylar dimension, position and excursion.…”

Section: Introductionmentioning

confidence: 99%

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Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Reis

Gaêta‐Araujo

Rosado

et al. 2022

J of Oral Rehabilitation

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Background: There is no established acquisition protocol based on scientific evidence for the acquisition of cone-beam computed tomography (CBCT) exams to evaluate the temporomandibular joint (TMJ). Objectives:To evaluate the influence of acquisition protocols and jaw positioning on the diagnostic accuracy of TMJ condylar morphological alterations (CMA), dimension, position and excursion.Methods: Thirty-six TMJs on 18 dry skulls were imaged using a CBCT unit (OP300 Maxio, Instrumentarium, Tuusula, Finland) at two exposure settings (4.5 and 6.3 mA), three voxel resolutions (0.085, 0.125 and 0.280 mm), three jaw positions (concentric, anteriorised and posteriorised) and three jaw excursions (normoexcursion, hyperexcursion and hypoexcursion). The macroscopic anatomy examination and highresolution CBCT images were used as ground truth for CMA. Twenty-five TMJs had at least one CMA with 11 healthy TMJs serving as controls. Three experienced oral and maxillofacial radiologists evaluated the parasagittal images for the presence of CMA, position and excursion and measured dimensions. The area under the ROC curve, sensitivity and specificity were calculated. Weighted Kappa (α = 0.05) was used to determine intra-and interexaminer reliability and comparisons between dependent variables analysed by Analysis of Variance at an a prior level of significance of 0.05. Results:The agreement of the evaluation of the position and excursion with the reference standard was high, independent of the protocol (range, 0.75-0.91). Various combinations of acquisition protocols and jaw position did not influence the CMA evaluation. Erosion was overdiagnosed in protocols with larger voxel sizes and the detection of osteophytes greater in images with smaller voxel sizes. The anteroposterior dimension was greater in the open jaw position (p < .05). Conclusion:CBCT protocols using reduced radiation exposure from the CBCT machine evaluated in this study can be used to assess condylar morphology, dimension, position and excursion, without compromising diagnostic performances for these parameters.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Reis

Gaêta‐Araujo

Rosado

et al. 2022

J of Oral Rehabilitation

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show abstract

“… 2 In years, cone beam computed tomography (CBCT) has been effectively used to study morphologic changes of the condyle with significantly lower doses of radiation. 3 Several conditions associated with the alteration in condylar morphology such as hypertrophy, hypotrophy, erosion, and osteophyte formation have been effectively detected using CBCT. 4 …”

Section: Introductionmentioning

confidence: 99%

Analysis of the Volumetric Asymmetry of the Mandibular Condyles Using CBCT

Shetty

Bayatti

AlKawas

et al. 2022

International Dental Journal

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In vitro accuracy of ultra-low dose cone-beam CT for detection of proximal caries

Taeby,

Seyyedi,

Mostafavi

2024

Dentomaxillofacial Radiology

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Objectives This study aimed to assess the accuracy of ultra-low dose (ULD) cone-beam computed tomography (CBCT) for detection of proximal caries. Methods This in vitro study evaluated 104 molar and premolar teeth. The teeth were mounted in dry skulls and underwent CBCT with four protocols of high-resolution (HR), normal (NORM), ULD-HR, and ULD-NORM; 78 CBCT images were scored by three observers for presence and penetration depth of caries twice with a 2-week interval using a 5-point Likert scale. The teeth were then sectioned and observed under a stereomicroscope (gold standard). The four protocols were compared with each other and with the gold standard. The receiver operating characteristic (ROC) curve was drawn, and the area under the curve (AUC) was calculated and compared by the Chi-square test (alpha = 0.05). Results The interobserver agreement ranged from 0.5233 to 0.6034 for ULD-NORM, 0.5380 to 0.6279 for NORM, 0.5856 to 0.6300 for ULD-HR, and 0.6614 to 0.7707 for HR images. The intra-observer agreement ranged from 0.6027 to 0.8812 for ULD-HR, 0.7083 to 0.7556 for HR, 0.6076 to 0.9452 for ULD-NORM, and 0.7012 to 0.9221 for NORM images. Comparison of AUC revealed no significant difference between NORM and ULD-NORM (P > 0.05), or HR and ULD-HR (P > 0.05). The highest AUC belonged to HR (0.8529) and the lowest to NORM (0.7774). Conclusions Considering the significant reduction in radiation dose in ULD CBCT and its acceptable diagnostic accuracy for detection of proximal caries, this protocol may be used for detection of proximal carious lesions and assessment of their depth.

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Low-dose cone-beam computed tomography in simulated condylar erosion detection: a diagnostic accuracy study

Cited by 7 publications

References 28 publications

Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Do cone‐beam computed tomography low‐dose protocols affect the evaluation of the temporomandibular joint?

Analysis of the Volumetric Asymmetry of the Mandibular Condyles Using CBCT

In vitro accuracy of ultra-low dose cone-beam CT for detection of proximal caries

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