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International Journal of Computer Assisted Radiology and Surgery

Erschienen in:

01.12.2015 | Original Article

Development of customized positioning guides using computer-aided design and manufacturing technology for orthognathic surgery

verfasst von: Hsiu-Hsia Lin, Hsin-Wen Chang, Lun-Jou Lo

Erschienen in: International Journal of Computer Assisted Radiology and Surgery | Ausgabe 12/2015

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Abstract

Purpose

The purpose of this study was to devise a method for producing customized positioning guides for translating virtual plans to actual orthognathic surgery, and evaluation of the feasibility and validity of the devised method.

Methods

Patients requiring two-jaw orthognathic surgery were enrolled and consented before operation. Two types of positioning guides were designed and fabricated using computer-aided design and manufacturing technology: One of the guides was used for the LeFort I osteotomy, and the other guide was used for positioning the maxillomandibular complex. The guides were fixed to the medial side of maxilla. For validation, the simulation images and postoperative cone beam computed tomography images were superimposed using surface registration to quantify the difference between the images. The data were presented in root-mean-square difference (RMSD) values.

Results

Both sets of guides were experienced to provide ideal fit and maximal contact to the maxillary surface to facilitate their accurate management in clinical applications. The validation results indicated that RMSD values between the images ranged from 0.18 to 0.33 mm in the maxilla and from 0.99 to 1.56 mm in the mandible. The patients were followed up for 6 months or more, and all of them were satisfied with the results.

Conclusion

The proposed customized positioning guides are practical and reliable for translation of virtual plans to actual surgery. Furthermore, these guides improved the efficiency and outcome of surgery. This approach is uncomplicated in design, cost-effective in fabrication, and particularly convenient to use.

Vorheriger Artikel Intraoperative CT as a registration benchmark for intervertebral motion compensation in image-guided open spinal surgery

Nächster Artikel Multicenter study on the use of patient-specific CAD/CAM reconstruction plates for mandibular reconstruction

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Titel: Development of customized positioning guides using computer-aided design and manufacturing technology for orthognathic surgery
verfasst von: Hsiu-Hsia Lin
Hsin-Wen Chang
Lun-Jou Lo
Publikationsdatum: 01.12.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: International Journal of Computer Assisted Radiology and Surgery / Ausgabe 12/2015
Print ISSN: 1861-6410
Elektronische ISSN: 1861-6429
DOI: https://doi.org/10.1007/s11548-015-1223-0

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Abstract

Purpose

Methods

Results

Conclusion

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