Universität zu Köln

Dreiseidler, Timo, Lentzen, Max-Philipp, Zirk, Matthias, Safi, Ali-Farid, Zoeller, Joachim E. and Kreppel, Matthias (2017). Systematic three-dimensional analysis of wafer-based maxillary repositioning procedures in orthognathic surgery. J. Cranio-MaxilloFac. Surg., 45 (11). S. 1828 - 1835. EDINBURGH: CHURCHILL LIVINGSTONE. ISSN 1878-4119

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Abstract

Purpose: Little is known about the three-dimensional (3D) transfer accuracy in maxillary repositioning procedures based on conventionally manufactured dental-mounted wafers. The purpose of the present study was a systematic 3D analysis for wafer-based maxillary positioning in orthognathic surgery. Materials and methods: A total of 92 patients underwent Le Fort I in addition to mandibular bilateral sagittal split osteotomies (BSSO). Alignment of the pre-and postsurgical CBCT data sets allowed measuring maxillary position changes in axial, sagittal and transversal directions. Results: The highest achieved absolute transfer inaccuracies were 1.37 mm, +/- 0.84 in the sagittal direction, followed by 1.15 mm, +/- 0.69 in the axial, as well as 1.05 mm, +/- 0.79 in the transversal direction. The largest relative deviations could be found for repositions in the transversal plane (109.4%, +/- 4.5), followed by the axial (66.2%, +/- 51.5) and sagittal plane (49.3%, +/- 2.2). Significant transfer accuracy differences of repositioning procedures in the sagittal direction, mainly advancement procedures, could be detected if performed with (1.75 mm, +/- 0.90) or without (1.18 mm, +/- 0.78) additional rotational correction component. No significant differences were found between unidirectional and multidirectional maxillary correction procedures. Conclusion: The present study for the first time delivers systematic 3D accuracy data of wafer-based maxillary positioning procedures, attesting to its feasibility but also further encouraging the search for improvement strategies. (C) 2017 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Dreiseidler, Timo UNSPECIFIED UNSPECIFIED UNSPECIFIED Lentzen, Max-Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED Zirk, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Safi, Ali-Farid UNSPECIFIED UNSPECIFIED UNSPECIFIED Zoeller, Joachim E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kreppel, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-212020
DOI:	10.1016/j.jcms.2017.08.022
Journal or Publication Title:	J. Cranio-MaxilloFac. Surg.
Volume:	45
Number:	11
Page Range:	S. 1828 - 1835
Date:	2017
Publisher:	CHURCHILL LIVINGSTONE
Place of Publication:	EDINBURGH
ISSN:	1878-4119
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BEAM COMPUTED-TOMOGRAPHY; ACCURACY; SUPERIMPOSITION; MODELS; ORTHODONTICS; SIMULATION; OSTEOTOMY; CT Multiple languages Dentistry, Oral Surgery & Medicine; Surgery Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21202