Computer-assisted orthognathic surgery: evaluation of mandible registration accuracy and report of the first clinical cases of navigated sagittal split ramus osteotomy

Naujokat, Hendrik; Rohnen, M.; Lichtenstein, Jürgen; Birkenfeld, Falk; Gerle, Mirko; Flörke, Christian; Wiltfang, Joerg

doi:10.1016/j.ijom.2017.05.003

“…Seven types of study were identified in the articles: one study with a healthy volunteer 31 , two simulation studies 32,33 , 24 case reports (one or two patients) 5,12,13, , 24 patient studies (three or more patients) 1,2,55-76 , 19 phan-tom studies 3,6,8,[77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92] , three (animal) cadaver studies [93][94][95] , and three animal studies [96][97][98] . Five articles used a combination of study types: a cadaver and patient study 99 , a phantom and patient study 100 , a cadaver and animal study 101 , a phantom and volunteer study 102 , and a combined phantom, volunteer, and case study 103 .…”

Section: Search Resultsmentioning

confidence: 99%

Registration methods for surgical navigation of the mandible: a systematic review

Geer¹,

Koning²,

Alphen³

et al. 2022

International Journal of Oral and Maxillofacial Surgery

View full text Add to dashboard Cite

“…This position of the Dynamic Reference Frame may be less invasive than fixation on the patient’s cranium 32 . Registration outside the patient has been proposed, both with a fiducial-based 20 – 23 , 25 – 27 and automatic method 28 – 31 . The fiducial-based registration is possible if the design has both registration fiducials and the DRF attached to the splint.…”

Section: Discussionmentioning

confidence: 99%

Registration-free workflow for electromagnetic and optical navigation in orbital and craniofacial surgery

Schreurs

¹

,

Baan

²

,

Klop

³

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The accuracy of intra-operative navigation is largely dependent on the intra-operative registration procedure. Next to accuracy, important factors to consider for the registration procedure are invasiveness, time consumption, logistical demands, user-dependency, compatibility and radiation exposure. In this study, a workflow is presented that eliminates the need for a registration procedure altogether: registration-free navigation. In the workflow, the maxillary dental model is fused to the pre-operative imaging data using commercially available virtual planning software. A virtual Dynamic Reference Frame on a splint is designed on the patient’s fused maxillary dentition: during surgery, the splint containing the reference frame is positioned on the patient’s dentition. This alleviates the need for any registration procedure, since the position of the reference frame is known from the design. The accuracy of the workflow was evaluated in a cadaver set-up, and compared to bone-anchored fiducial, virtual splint and surface-based registration. The results showed that accuracy of the workflow was greatly dependent on tracking technique used: the workflow was the most accurate with electromagnetic tracking, but the least accurate with optical tracking. Although this method offers a time-efficient, non-invasive, radiation-free automatic alternative for registration, clinical implementation is hampered by the unexplained differences in accuracy between tracking techniques.

show abstract

“…Several studies have proposed designs of a Dynamic Reference Frame supported by a splint 17,18,27,28,[19][20][21][22][23][24][25][26] . This position of the Dynamic Reference Frame may be less invasive than fixation on the patient's cranium 29 .…”

Section: Discussionmentioning

confidence: 99%

“…This position of the Dynamic Reference Frame may be less invasive than fixation on the patient's cranium 29 . Registration outside the patient has been proposed, both with a fiducial-based [17][18][19][20][22][23][24] and automatic method [25][26][27][28] . The fiducial-based registration is possible if the design has both registration fiducials and the DRF attached to the splint.…”

Section: Discussionmentioning

confidence: 99%

Registration-Free Workflow for Electromagnetic and Optical Navigation in Orbital and Craniofacial Surgery

Schreurs

¹

,

Baan

²

,

Klop

³

et al. 2020

Preprint

View full text Add to dashboard Cite

The accuracy of intra-operative navigation is largely dependent on the intra-operative registration procedure. Next to accuracy, important factors to consider for the registration procedure are invasiveness, time consumption, logistical demands, user-dependency, compatibility and radiation exposure. In this study, a workflow is presented that eliminates the need for a registration procedure altogether: registration-free navigation. In the workflow, the maxillary dental model is fused to the pre-operative imaging data using commercially available virtual planning software. A virtual Dynamic Reference Frame on a splint is designed on the patient’s fused maxillary dentition: during surgery, the splint containing the reference frame is positioned on the patient’s dentition. This alleviates the need for any registration procedure, since the position of the reference frame is known from the design. The accuracy of the workflow was evaluated in a cadaver set-up, and compared to bone-anchored fiducial, virtual splint and surface-based registration. The results showed that accuracy of the workflow was greatly dependent on tracking technique used: the workflow was the most accurate with electromagnetic tracking, but the least accurate with optical tracking. Although this method offers a time-efficient, non-invasive, radiation-free automatic alternative for registration, clinical implementation is hampered by the unexplained differences in accuracy between tracking techniques.

show abstract

Computer-assisted orthognathic surgery: evaluation of mandible registration accuracy and report of the first clinical cases of navigated sagittal split ramus osteotomy

Cited by 12 publications

References 20 publications

Registration methods for surgical navigation of the mandible: a systematic review

Registration methods for surgical navigation of the mandible: a systematic review

Registration-free workflow for electromagnetic and optical navigation in orbital and craniofacial surgery

Registration-Free Workflow for Electromagnetic and Optical Navigation in Orbital and Craniofacial Surgery

Contact Info

Product

Resources

About