Validity, reliability, and reproducibility of linear measurements on digital models obtained from intraoral and cone-beam computed tomography scans of alginate impressions

2013 ◽  
Vol 143 (1) ◽  
pp. 140-147 ◽  
Author(s):  
Matthew G. Wiranto ◽  
W. Petrie Engelbrecht ◽  
Heleen E. Tutein Nolthenius ◽  
W. Joerd van der Meer ◽  
Yijin Ren
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Digital Models ◽  
Linear Measurements ◽  
Computed Tomography Scans

scholarly journals Reliability and validity of miniscrews as references in cone-beam computed tomography and intraoral scanner digital models: study on goat heads

2019 ◽  
Author(s):  
YIRAN JIANG ◽  
GUI CHEN
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Reliability And Validity ◽  
Cone Beam ◽  
Intraoral Scanner ◽  
Digital Models ◽  
Linear Measurements ◽  
Actual Measurement ◽  
Significant Difference ◽  
Angular Measurements

Abstract Background: Miniscrews have been used to superimpose craniofacial three-dimensional (3D) images or explore stable structures in jaws, in spite of their artifact. Our purpose was to evaluate the reliability and validity of linear and angular measurements on a 3D model of miniscrews from cone-beam computed tomography (CBCT) at two voxel sizes and an intraoral scanner (IOS). Methods: Altogether, 64 miniscrews were placed in 12 jaws of goat. Jaws with miniscrews were scanned by CBCT machine at different voxels and IOS. Linear and angular measurements between miniscrews on CBCT at 0.12-mm and 0.3-mm voxels and the IOS were compared with actual measurements and with each other. Results: An intra-and inter-class correlation of 0.961–1.000 was obtained by each method. Significant overestimations of linear measurements of 0 .2 7 ± 0.24, 0.14 ± 0.22 and 0.15±0.26 mm, and non-significant differences of 0.11±1.97 °, 0.15±2.79° and 0.41±2.34°, were observed on CBCT at 0.12-mm and 0.3-mm voxels and the IOS, respectively. Equal magnification of linear measurements was on homolateral and contralateral sides using CBCT, whereas significantly greater magnification on the homolateral side than on the opposite was observed using the IOS. There was no significant difference on results of angular measurements between digital models of CBCT at two voxels and IOS and of them in comparison with actual measurement results respectively. Conclusions: Miniscrews in CBCT and IOS are reliable and clinical valid as reference measuring tooth movement. However, when miniscrews are involved in high precision measurement in CBCT or IOS image, the systematic error should be taken into consideration. Same voxels of CBCT images are recommended for miniscrew related measurements to reduce the type of error source.

scholarly journals Reliability and validity of miniscrews as references in cone-beam computed tomography and intraoral scanner digital models: study on goat heads

2019 ◽  
Author(s):  
GUI CHEN ◽  
YIRAN JIANG
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Reliability And Validity ◽  
Cone Beam ◽  
Intraoral Scanner ◽  
Digital Models ◽  
Linear Measurements ◽  
Reference Measuring ◽  
Significant Difference ◽  
Angular Measurements

Abstract Background: Miniscrews have been used to superimpose craniofacial three-dimensional (3D) images or explore stable structures in jaws ,in spite of their artifact. Our purpose was to evaluate the reliability and validity of linear and angular measurements on a 3D model of miniscrews from cone-beam computed tomography (CBCT) at two voxel sizes and an intraoral scanner (IOS). Methods: Altogether, 64 miniscrews were placed in 12 jaws of goat. Jaws with miniscrews were scanned by CBCT machine at different voxels and IOS. Linear and angular measurements between miniscrews on CBCT at 0.12-mm and 0.3-mm voxels and the IOS were compared with actual measurements and with each other. Results: An intraclass correlation of 0.961–1.000 was obtained by each method. Significant overestimations of linear measurements of 0 .2 7 ± 0.24, 0.14 ± 0.22 and 0.15±0.26 mm, and non-significant differences of 0.11±1.97 °, 0.15±2.79° and 0.41±2.34°, were observed on CBCT at 0.12-mm and 0.3-mm voxels and the IOS, respectively. Equal magnification of linear measurements was on homolateral and contralateral sides using CBCT, whereas significantly greater magnification on the homolateral side than on the opposite was observed using the IOS. No significant difference was observed among three digital models on angular measurements. Conclusions: Miniscrews in CBCT and IOSs seem reliable and valid as reference measuring tooth movement. However, when miniscrews are involved in high precision measurement in CBCT or IOS image, the systematic error should be taken into consideration. Same voxels of CBCT images are recommended for miniscrew related measurements to reduce the type of error source.

scholarly journals Accuracy of linear measurements performed with two imaging software in cone-beam computed tomography scans of dry human mandibles

2017 ◽  
Vol 89 (4) ◽  
pp. 2865-2873 ◽  
Author(s):  
ALESSANDRO A.L.S. SILVA ◽  
ADEMIR FRANCO ◽  
ÂNGELA FERNANDES ◽  
CLAUDIO COSTA ◽  
JORGE S. BARBOSA ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Linear Measurements ◽  
Computed Tomography Scans

scholarly journals Temporomandibular Joint Osseous Morphology of Class I and Class II Malocclusions in the Normal Skeletal Pattern: A Cone-Beam Computed Tomography Study

Diagnostics ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 541
Author(s):  
Xiao-Chuan Fan ◽  
Lin-Sha Ma ◽  
Li Chen ◽  
Diwakar Singh ◽  
Xiaohui Rausch-Fan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Cone Beam Computed Tomography ◽  
Class Ii ◽  
Class I ◽  
Cone Beam ◽  
Glenoid Fossa ◽  
Linear Measurements ◽  
Significant Difference ◽  
Skeletal Pattern

(1) Background—The aim of the present study was to evaluate the correlation between the temporomandibular joint (TMJ) osseous morphology of normal skeletal pattern individuals with different dental malocclusions by using cone-beam computed tomography (CBCT). (2) Methods—The CBCT images of bilateral TMJs in 67 subjects with skeletal class I and average mandibular angle (26 males and 41 females, age range 20–49 years) were evaluated in this study. The subjects were divided into class I, class II division 1, and class II division 2 according to the molar relationship and retroclination of the maxillary incisors. Angular and linear measurements of TMJ were evaluated and the differences between the groups were statistically analyzed. (3) Results—Intragroup comparisons showed statistical differences for articular eminence inclination, the width of the glenoid fossa, the ratio of the width of the glenoid fossa to the depth of the glenoid fossa, the condylar angle, and the intercondylar angle between the malocclusion groups. The measurements of the glenoid fossa shape showed no significant difference between the left and right sides. Females showed more differences in the morphological parameters of TMJ between the three malocclusion groups than the males. (4) Conclusion—The present study revealed differences in the TMJ osseous morphology between dental class I and class II malocclusions in the normal skeletal pattern.

scholarly journals The Effect of Implant-Induced Artifacts on Interpreting Adjacent Bone Structures on Cone-Beam Computed Tomography Scans

2018 ◽  
Vol 27 (1) ◽  
pp. 10-14 ◽  
Author(s):  
Rachel A. Sheridan ◽  
Yi-Chen Chiang ◽  
Ann M. Decker ◽  
Pimchanok Sutthiboonyapan ◽  
Hsun-Liang Chan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Computed Tomography Scans ◽  
Bone Structures

Accuracy of miniscrew surgical guides assessed from cone-beam computed tomography and digital models

2013 ◽  
Vol 143 (6) ◽  
pp. 893-901 ◽  
Author(s):  
Mi-Ju Bae ◽  
Ji-Young Kim ◽  
Jong-Tae Park ◽  
Jung-Yul Cha ◽  
Hee-Jin Kim ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Digital Models ◽  
Surgical Guides
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