Accuracy of linear measurements from imaging plate and lateral cephalometric images derived from cone-beam computed tomography

Moshiri, Mazyar; Scarfe, William C.; Hilgers, Michael L.; Scheetz, James P.; Silveira, Anibal M.; Farman, Allan G.

doi:10.1016/j.ajodo.2006.09.046

Cited by 182 publications

(129 citation statements)

References 41 publications

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“…22 Reliable and accurate evaluation is difficult because of this inherent geometric magnification, distortion, and superimposition of craniofacial structures. [23][24][25][26][27] The use of cephalometry as an adjunct to clinical examination as a basis for predicting craniofacial growth is thus questionable. 28,29 Imaging is increasingly favored for perceiving the size and form of craniofacial structures in orthodontics and has the advantage of replicating anatomical detail accurately in three dimensions.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of mandibular volume using cone-beam computed tomography and correlation with cephalometric values

Katayama

Yamaguchi

Sugiura

et al. 2013

The Angle Orthodontist

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Objective: To investigate the association between maxillofacial morphology and mandibular bone volume in patients with skeletal malocclusion. Materials and Methods: Subjects were 118 adult Japanese (58 males and 60 females). Skeletal malocclusion was classified, based on cephalometric analysis, into skeletal Classes I (21u # ANB , 4u), II (ANB $ 4u), and III (ANB , 21u). Using cone-beam computed tomography and threedimensional image analysis software, the dental crowns and mandible were separated, with only the mandible extracted. This was then reconstructed as a three-dimensional model, from which the mandibular volume was measured. Results: No significant difference in mandibular volume was noted among skeletal Classes I, II, and III, nor was there any significant correlation between mandibular volume and the ANB, SNB, or mandibular plane angles. There was occasional and limited correlation between mandible volume and gonial angle and certain cephalometric distance parameters. Conclusion: We conclude that proper understanding of the three-dimensional maxillofacial morphology requires not only cephalometric radiographic tracings but also high-resolution analysis of the mandibular area, width, and volume. (Angle Orthod. 2014;84:337-342.)

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Section: Discussionmentioning

confidence: 99%

Evaluation of mandibular volume using cone-beam computed tomography and correlation with cephalometric values

Katayama

Yamaguchi

Sugiura

et al. 2013

The Angle Orthodontist

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“…These new imagistic systems offer the possibility of an exact interpretation of the medical pathology and give enough information for an accurate diagnosis (Moshiri M et al 2007).…”

Section: Discussionmentioning

confidence: 99%

A Cone Beam Computed Tomography Study Among Dental Residents Based on a Questionnaire

Stoica

Monea

Sita

et al. 2016

ESJ

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Objectives: The aim of our study was to analyse the utility of the CBCT systems among the dental residents form the Dental University of TarguMures. Material and methods: We conducted an anonymous survey using a questionnaire that included 11 questions. All the 55 participants from all dental specialties studied at the Dental University Center Targu-Mures. The completed questionnaires were collected the results were evaluated and statistically analyzed using chi-square test. Results: Most residents have learnt about the CBCT during the university studied by participating at different radio-imagistic courses outside the curriculum. Only 33 (60%) residents recommend daily a CBCT for supporting their diagnosis most of them being oral surgeons and 7 (12.72%) of them occasionally recommend between 1 and 5 CBCTs a month. Conclusions: The CBCT system used as an imagistic evaluation in all dental specialties is essential and the advantages can be found in the accuracy of establishing a correct diagnosis, creating a treatment plan and results evaluation.

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“…Magnification occurs when X-ray beams are not parallel and the magnitude of enlargement is related to the distances between the focus and the film. Results of the study conducted by Moshiri et al 17 found that CBCT derived lateral cephalograms were more accurate than conventional cephalograms especially those on sagittal plane. Schulze et al 18 evaluated precision and accuracy of measurements in digital panoramic radiography and found that vertical measurements were less precise than horizontal ones, although this loss in precision is not clinically relevant and a significant loss in precision is due to magnification which is consistent with the findings in the present study.…”

Section: Linear Parametersmentioning

confidence: 99%

Validity and Reliability of CBCT Derived 2D Perspective Cephalometric Images and 3D Orthogonal Imaging: A Comparative Evaluation

Sharma

Krishnaswamy

Thomas

2013

JIOS

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The advancement in the field of three-dimensional imaging has overcome the limitations of conventional cephalometry. Presently, only few studies have been carried out to check the reliability and validity of CBCT. Aims:To compare (1) The difference between cephalometric angular and linear measurements in 3D orthogonal (3DO) and 2D perspective (2DP) which were CBCT synthesized cephalograms and (2) to verify the intra-and inter-reliability of the landmarks. Materials and methods:CBCT data of 50 patients was acquired using NEWTOM 3G. The Raw data sets (DICOM) were imported into Dolphin imaging version 10.5. Orthogonal and perspective time points were created and digitized. The results between the two were compared using a customized analysis.Results: Validity of the data was compared using the paired Student's t-test. The level of significance was 5% (p < 0.05). The 2D perspective was significantly different from 3D orthogonal in 21 of 29 parameters. Conclusion:Significant difference was observed between 2D perspective and 3D orthogonal attributing to the effect of magnification and distortion in 2D perspective projection. Intra-and Interoperator reliability of landmark identification in both 2D perspective and 3D orthogonal was in complete agreement with each other showing no significant difference.

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Accuracy of linear measurements from imaging plate and lateral cephalometric images derived from cone-beam computed tomography

Cited by 182 publications

References 41 publications

Evaluation of mandibular volume using cone-beam computed tomography and correlation with cephalometric values

Evaluation of mandibular volume using cone-beam computed tomography and correlation with cephalometric values

A Cone Beam Computed Tomography Study Among Dental Residents Based on a Questionnaire

Validity and Reliability of CBCT Derived 2D Perspective Cephalometric Images and 3D Orthogonal Imaging: A Comparative Evaluation

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