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Treatment outcome in orthognathic surgery-A prospective randomized blinded case-controlled comparison of planning accuracy in computer-assisted two- and three-dimensional planning techniques (part II)
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- Bengtsson, Martin (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för odontologi,Institute of Odontology
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Wall, G. (författare)
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Greiff, L. (författare)
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- Rasmusson, Lars, 1962 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för odontologi,Institute of Odontology
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(creator_code:org_t)
- Elsevier BV, 2017
- 2017
- Engelska.
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Ingår i: Journal of Cranio-Maxillofacial Surgery. - : Elsevier BV. - 1010-5182. ; 45:9, s. 1419-1424
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Purpose: The aim of the present study was to compare the accuracy of two-dimensional (2D) and three-dimensional (3D) prediction methods. The hypothesis was that a 3D technique would give a more accurate outcome of the postoperative result. Material and methods: Patients with severe class III occlusion were included and planed with both a 2D and 3D prediction technique. They were there after randomly subdivided into a control (2D) and test (3D) group and treated according to the technique randomized for. Cephalometric measurements from 2D and 3D predictions were compared with 12-month follow-up respectively. Together with an analysis of tracing error, placements of 3580 cephalometric markers, 2460 measurements, 680 intra-individual analyses and 1200 preop/postop comparisons were performed in 57 individuals. Results: Statistically significant differences for accuracy between the two groups were seen for 11/NSL112/NSL2 and for A-A2 (p < 0.05). Both groups showed a high level of accuracy for SNA and SNB. The test group also showed a relatively high level of accuracy for 11/NSL and for the A-point. No prediction method achieves a perfect accuracy. As expected from this, measuring accuracy within each group showed statistically significant difference for all markers and cephalometric measurements (p < 0.001). Mandibular markers showed greater differences than maxillary markers. Conclusion: The present study indicates an equal high accuracy in predicting facial outcome for both studied techniques. However, in patients with asymmetry the three-dimensional technique has an obvious advantage. (C) 2017 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kirurgi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Surgery (hsv//eng)
Nyckelord
- Orthognathic surgery
- Dentofacial deformity
- Computer-aided surgical simulation
- Virtual surgical planning
- Cephalometry
- Randomized controlled trial
- cad/cam surgical splints
- distraction osteogenesis
- simulation
- prediction
- maxillary
- soft
- Dentistry
- Oral Surgery & Medicine
- Surgery
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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