Computer-assisted three-dimensional surgical planning and simulation: 3D virtual osteotomy

Xia, James J.; Ip, Horace H. S.; Samman, N; Wang, Dongfeng; Kot, Christy S.B.; Yeung, Richie; Tideman, H.

doi:10.1016/s0901-5027(00)80116-2

Cited by 221 publications

(58 citation statements)

References 29 publications

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“…6,8 With the development of CT and 3D reconstructions in the 1970s, related procedures in orthodontics have been attempted through several different approaches. 9,10 These techniques can exactly record and represent the size and the shape of the object. 9 Nowadays, reduced exposure and cost have enabled orthodontists to request CT images for various procedures, ranging from diagnosis and treatment planning of congenital malformations to localization of impacted and transposed teeth and positioning of dental implants.…”

Section: Introductionmentioning

confidence: 99%

“…9,10 These techniques can exactly record and represent the size and the shape of the object. 9 Nowadays, reduced exposure and cost have enabled orthodontists to request CT images for various procedures, ranging from diagnosis and treatment planning of congenital malformations to localization of impacted and transposed teeth and positioning of dental implants. 2,11 With these benefits, the routine use of CT scans for orthodontic diagnosis might not be very far away.…”

Section: Introductionmentioning

confidence: 99%

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A comparison of two-dimensional radiography and three-dimensional computed tomography in angular cephalometric measurements

Nalçacı

Öztürk²,

Sökücü³

2010

Dentomaxillofacial Radiology

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Objectives: The objective of this study was to assess the reliability of three-dimensional (3D) cephalometric approaches by comparing this method with authenticated traditional twodimensional (2D) cephalometry in angular cephalometric measurements. Methods: CT images and lateral cephalometric radiographs of ten patients (five women, five men) were used in this study. Raw CT data of the patients were converted to 3D images with a 3D simulation program (Mimics 9.0, Leuven, Belgium). Lateral cephalometric radiographs were used manually for 2D measurements. The comparisons of the two methods were made using 14 cephalometric angular measurements. The Wilcoxon matched-pairs signed-ranks test (a 5 0.05) was used to determine the difference between the two methods. To assess the intra-and interobserver reproducibility, two sets of recordings made by each observer, in each modality were used. Dahlberg's formula was used to determine the intraobserver reproducibility, and the Wilcoxon matched-pairs signed-rank test (a 5 0.05) was used to assess the interobserver reproducibility. Results: The method errors of both observers ranged from 0.35˚to 0.65˚. In addition, there were no significant differences between the measurements of the two observers (P . 0.05). However, comparison of 2D and 3D parameters showed significant differences in U1-NA and U1-SN measurements (P , 0.05). Conclusions: The 3D angular cephalometric analysis is a fairly reliable method, like the traditional 2D cephalometric analysis. Currently, the 3D system is likely to be more suitable for the diagnosis of cases with complex orthodontic anomalies. However, with the decrease in radiation exposure and costs in the future, 3D cephalometrics can be a suitable alternative method to 2D cephalometry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparison of two-dimensional radiography and three-dimensional computed tomography in angular cephalometric measurements

Nalçacı

Öztürk²,

Sökücü³

2010

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6][7][8] It allows us to evaluate 3-dimensional (3D) morphology of the maxillofacial skeleton, which is difficult to identify with cephalometric radiography. [1][2][3]6,7,[9][10][11][12] On the other hand, use of CT increases radiation exposure, and this should not be ignored.…”

Section: Introductionmentioning

confidence: 99%

Reproducibility of Maxillofacial Anatomic Landmarks on 3-Dimensional Computed Tomographic Images Determined with the 95% Confidence Ellipse Method

Muramatsu

Nawa

Kimura

et al. 2008

The Angle Orthodontist

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Objective: To assess the plotting reproducibility of landmarks on 3-dimensional computed tomography (3D-CT) images through use of the 95% confidence ellipse in order to propose sufficiently stable coordinate systems for 3D-CT measurements. Materials and Methods: Six dentists plotted 19 landmarks twice on 3D-CT images. Scatterplots and the 95% ellipses were produced 3-dimensionally, and the areas of the ellipses were calculated for evaluating the reproducibility of landmarks. [Or], and true porion [Po]) that are frequently used as reference points on cephalograms, Ba showed the smallest areas for all three coordinate axes, indicating high reproducibility. The coronoid process (CP) and the tooth-related landmarks showed relatively high reproducibility. Conclusion: Sufficiently stable coordinate axes could be proposed for different treatments and studies.

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“…Computer-assisted genioplasty seems to be the next step in the evolution of computerassisted orthognathic surgery (Xia et al, 2000). The combination of different threedimensional methods for the diagnosis (3D cephalometric analysis), virtual planning (Mimics software), and transfer (3D RPM, surgical guide, and pre-bent plates) allowed for a complete 3D treatment of this case.…”

Section: Discussionmentioning

confidence: 95%

Clinical Applications of Rapid Prototyping Models in Cranio-Maxillofacial Surgery

Olszewski¹,

Reychler²

2011

Advanced Applications of Rapid Prototyping Technology in Modern Engineering

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Computer-assisted three-dimensional surgical planning and simulation: 3D virtual osteotomy

Cited by 221 publications

References 29 publications

A comparison of two-dimensional radiography and three-dimensional computed tomography in angular cephalometric measurements

A comparison of two-dimensional radiography and three-dimensional computed tomography in angular cephalometric measurements

Reproducibility of Maxillofacial Anatomic Landmarks on 3-Dimensional Computed Tomographic Images Determined with the 95% Confidence Ellipse Method

Clinical Applications of Rapid Prototyping Models in Cranio-Maxillofacial Surgery

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