Journal article
Accuracy of soft tissue prediction in surgery-first treatment concept in orthognathic surgery: A prospective study.
- Holzinger D Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria. Electronic address: daniel.holzinger@meduniwien.ac.at.
- Juergens P Department for Cranio-Maxillofacial and Oral Surgery, University of Basel, Basel, Switzerland.
- Shahim K Institute for Surgical Technology and Biomechanics, University of Bern, Switzerland.
- Reyes M Institute for Surgical Technology and Biomechanics, University of Bern, Switzerland.
- Schicho K Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria.
- Millesi G Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria.
- Perisanidis C Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria.
- Zeilhofer HF Department for Cranio-Maxillofacial and Oral Surgery, University of Basel, Basel, Switzerland.
- Seemann R Department of Cranio-Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria.
- 2018-09-11
Published in:
- Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery. - 2018
3D planning
Orthognathic surgery
Soft tissue prediction
Surgery-first
Virtual surgery
Adolescent
Adult
Female
Humans
Imaging, Three-Dimensional
Male
Malocclusion
Open Bite
Orthognathic Surgical Procedures
Prospective Studies
Software
Surgery, Computer-Assisted
Tomography, X-Ray Computed
Treatment Outcome
English
PURPOSE
The purpose of this study was to provide a quantitative accuracy assessment of soft tissue predictions generated by a computer-aided maxillofacial planning system in patients undergoing orthognathic surgery following the "surgery-first" treatment.
MATERIALS AND METHODS
For this study, we looked at 16 patients with open bite dentofacial-dysmorphosis who underwent orthognathic surgery. Surgeries were planned using conventional sketches and the newly developed computer-assisted SOTIRIOS planning software (developed by the authors). Validation procedures were performed in the following steps: (1) Standardized registration of the pre- and postoperative CT volumes; (2) Automated adjustment of the bone-related preoperative planning to the actual postoperative bony displacement; (3) Simulation of soft tissue changes according to the definitive bony movements; and (4) Calculation of soft tissue differences between the predicted and the actual 6-month postoperative results by distance mapping.
RESULTS
The program produced a clinically satisfactory 3D soft tissue prediction, with a mean error of 1.46 mm ± 1.53 mm. The program was suitable for use in virtual surgical planning without technical assistance.
CONCLUSION
This study shows that the program is quite accurate, enabling the surgeon to predict the outcome of the soft tissue. This has the potential to promote the routine application of the surgery-first approach in patients suffering from open bite.
The purpose of this study was to provide a quantitative accuracy assessment of soft tissue predictions generated by a computer-aided maxillofacial planning system in patients undergoing orthognathic surgery following the "surgery-first" treatment.
MATERIALS AND METHODS
For this study, we looked at 16 patients with open bite dentofacial-dysmorphosis who underwent orthognathic surgery. Surgeries were planned using conventional sketches and the newly developed computer-assisted SOTIRIOS planning software (developed by the authors). Validation procedures were performed in the following steps: (1) Standardized registration of the pre- and postoperative CT volumes; (2) Automated adjustment of the bone-related preoperative planning to the actual postoperative bony displacement; (3) Simulation of soft tissue changes according to the definitive bony movements; and (4) Calculation of soft tissue differences between the predicted and the actual 6-month postoperative results by distance mapping.
RESULTS
The program produced a clinically satisfactory 3D soft tissue prediction, with a mean error of 1.46 mm ± 1.53 mm. The program was suitable for use in virtual surgical planning without technical assistance.
CONCLUSION
This study shows that the program is quite accurate, enabling the surgeon to predict the outcome of the soft tissue. This has the potential to promote the routine application of the surgery-first approach in patients suffering from open bite.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1016/j.jcms.2018.05.055
- PMID 30196855
- Persistent URL
- https://sonar.ch/global/documents/166964
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