3-Dimensional CBCT analysis of mandibular asymmetry in unilateral condylar hyperplasia

Nolte, J.W.; Verhoeven, Tim J.; Schreurs, Ruud; Bergé, Stefaan; Karssemakers, L.H.E.; Becking, A.G.; Maal, T.J.J.

doi:10.1016/j.jcms.2016.09.016

Cited by 39 publications

(21 citation statements)

References 20 publications

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“…The same CT data were imported into Geomagic software (Geomagic Studio 2012, 3D System, SC, Morrisville, USA), in which the volume of the condyle, the ramus, and the body of the mandible were analyzed. The three parts of mandible were segmented by C‐point plane, mandibular angle plane, and median landmarks plane . Measurements were recorded to two decimal fractions of a cubic millimeter.…”

Section: Methodsmentioning

confidence: 99%

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Mandibular growth in survivors of pediatric parotid gland carcinoma treated with interstitial brachytherapy

Huang

Zhang

et al. 2018

Pediatric Blood & Cancer

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Section: Methodsmentioning

confidence: 99%

“…The three parts of mandible were segmented by C-point plane, mandibular angle plane, and median landmarks plane. [15][16][17][18][19] Measurements were recorded to two decimal fractions of a cubic millimeter.…”

Section: Measurement Of Mandibular Volumesmentioning

confidence: 99%

Mandibular growth in survivors of pediatric parotid gland carcinoma treated with interstitial brachytherapy

Huang

Zhang

et al. 2018

Pediatric Blood & Cancer

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“…The first high-density pixel in the articular fossa was the upper condyle, and the lower condyle was identified in the layer above that where the sigmoid notch disappeared (ie, where the condyle and coracoid were connected) (Fig 2). 21,22 After determining the upper and lower boundaries, the cavity was filled to obtain a complete unilateral condylar mask. A 3D model of the condyle and mandible was reconstructed, the model was optimized through a smoothing operation, and irregular burrs on the surface were removed.…”

Section: D Medical Modelingmentioning

confidence: 99%

Using 3D Medical Modeling to Evaluate the Accuracy of Single-Photon Emission Computed Tomography (SPECT) Bone Scintigraphy in Diagnosing Condylar Hyperplasia

Xiao

2022

Journal of Oral and Maxillofacial Surgery

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Q3X X computed tomography (SPECT) in diagnosing unilateral condylar Q4 X X hyperplasia (UCH) and to describe Q5 X X the condylar growth of patients with UCH.Materials and Methods: Using a retrospective study design, patients with UCH who had undergone SPECT and cone-beam computed tomography (CBCT) examinations at the same time were included in the study. We used 3D medical models based on CBCT data as the gold standard. The SPECT results were compared with the model data, and the sensitivity and specificity were calculated. To further describe the condylar growth activity, statistical analysis was performed, and the P value was set at 0.05. Results:The sample was composed of 75 patients. The sensitivity of SPECT was 55.3%, the specificity was 48.6%, and the area under the receiver operating characteristic curve was 0.53. There was no significant difference in sex between patients with and without active growth. Conclusion:The sensitivity and specificity of SPECT are poor, and SPECT alone is not suitable for evaluating the active stage of condylar growth. 3D medical modeling has good prospects for application in the diagnosis of condylar hyperplasia Q6 X X.

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“…A segmentation mask was created to obtain volumetric reconstruction of the mandibular parts of interest. The whole mandibular bony structure was isolated in the first This mask was then divided into the anatomical components of the mandibular bone using a method where reliability and reproducibility have already been validated by Nolte et al [36] A 3D cephalometric reference system was identified, as described by Swennen et al [37], and the horizontal (x) plane was defined as the one passing through Sella (S) obtained tilting six degrees below the plane, passing through Sella and Nasion (N) and normal to the mid-sagittal plane (S-N-Ba). The vertical reference plane (y) was defined as the one passing through S and normal to x.…”

Section: Cbct Examination and Postprocessingmentioning

confidence: 99%

Three-dimensional volumetric evaluation of the different mandibular segments using CBCT in patients affected by juvenile idiopathic arthritis: a cross-sectional study

et al. 2021

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Background There is currently no information on how different mandibular segments are affected by juvenile idiopathic arthritis. The aim of this paper is to assess volumetric differences of different mandibular segments in subjects with unilateral and bilateral JIA and to compare them with non-JIA control volumes. Materials and methods Forty subjects with unilateral TMJ involvement and 48 with bilateral TMJ involvement were selected for the case group and 45 subjects with no known rheumatic comorbidities for the control group. The mandible of each subject was divided according to a validated method into different paired volumes (hemimandible, condyle, ramus and hemibody). Results The ANOVA test revealed a statistically significant difference in all the groups for condylar and ramus volumes, and the pairwise comparison evidenced a statistically significant higher condylar and ramus volume in the control group (1444.47 mm3; 5715.44 mm3) than in the affected side in the unilateral JIA group (929.46 mm3; 4776.31 mm3) and the bilateral JIA group (1068.54 mm3; 5715.44 mm3). Moreover, there was also a higher condylar volume in the unaffected side in the unilateral JIA group (1419.39 mm3; 5566.24 mm3) than in the bilateral JIA group and the affected side in the unilateral JIA group. Conclusions The affected side of unilateral JIA patients showed statistically significant lower volumes in the hemimandible, in the condyle and in the ramus. The largest total mandibular volume was observed in the control group, followed by the unilateral JIA group and, lastly, by the bilateral JIA group.

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3-Dimensional CBCT analysis of mandibular asymmetry in unilateral condylar hyperplasia

Cited by 39 publications

References 20 publications

Mandibular growth in survivors of pediatric parotid gland carcinoma treated with interstitial brachytherapy

Mandibular growth in survivors of pediatric parotid gland carcinoma treated with interstitial brachytherapy

Using 3D Medical Modeling to Evaluate the Accuracy of Single-Photon Emission Computed Tomography (SPECT) Bone Scintigraphy in Diagnosing Condylar Hyperplasia

Three-dimensional volumetric evaluation of the different mandibular segments using CBCT in patients affected by juvenile idiopathic arthritis: a cross-sectional study

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