Format

Send to

Choose Destination
  • Showing results for a modified search because your search retrieved no results.
J Craniomaxillofac Surg. 2017 Apr;45(4):461-466. doi: 10.1016/j.jcms.2016.12.020. Epub 2016 Dec 24.

Virtual reconstruction of midface defects using statistical shape models.

Author information

1
Department of Oral and Maxillofacial Surgery (Chairman: Prof. Dr. Dr. Rainer Schmelzeisen), Albert-Ludwigs University Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany. Electronic address: wiebke.semper.hogg@uniklinik-freiburg.de.
2
Department of Oral and Maxillofacial Surgery (Chairman: Prof. Dr. Dr. Rainer Schmelzeisen), Albert-Ludwigs University Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany. Electronic address: marc.anton.fuessinger@uniklinik-freiburg.de.
3
Department of Oral and Maxillofacial Surgery (Chairman: Prof. Dr. Dr. Rainer Schmelzeisen), Albert-Ludwigs University Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany. Electronic address: steffen.schwarz@uniklinik-freiburg.de.
4
Department of Oral and Maxillofacial Surgery (Chairmann: Edward Ellis III, D.D.S., M.S., PhD), University of Texas Health Science Center at San Antonio, 8210 Floyd Curl Drive, MC8124, 78229-3923 San Antonio, USA. Electronic address: EllisE3@uthscsa.edu.
5
Department of Oral and Maxillofacial Surgery (Chairmann: Prof. Dr. Dr. Michael Ehrenfeld), Ludwig-Maximilians-University Munich, Lindwurmstr. 2a, 80137 Munich, Germany. Electronic address: peter.cornelius@med.lmu.de.
6
Department of Oral and Maxillofacial Surgery (Chairmann: Edward Ellis III, D.D.S., M.S., PhD), University of Texas Health Science Center at San Antonio, 8210 Floyd Curl Drive, MC8124, 78229-3923 San Antonio, USA. Electronic address: florian.probst@med.lmu.de.
7
Department of Oral and Maxillofacial Surgery (Chairman: Prof. Dr. Dr. Rainer Schmelzeisen), Albert-Ludwigs University Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany. Electronic address: marc.metzger@uniklinik-freiburg.de.
8
Department of Physical Anthropology (Chairman: Prof. Dr. Ursula Wittwer-Backofen), Albert-Ludwigs University Freiburg, Hebelstr. 29, 79104 Freiburg, Germany. Electronic address: stefan.schlager@uniklinik-freiburg.de.

Abstract

PURPOSE:

This study evaluates the accuracy of a statistical shape model (SSM) for virtual fracture reconstruction of the lateral midface.

MATERIALS AND METHODS:

A uniform bony defect of the right zygoma was created. A virtual reconstruction was performed by using the standard procedure of mirroring the unaffected to the affected side (Group I) and by using the statistical model based on 178 pathologically unaffected CT scans (Group II). The accuracy of the statistical shape model was evaluated in comparison to the present mirroring protocol. The reconstructed region was compared with the original bone evaluating the mean deviation of both surfaces.

RESULTS:

All zygomas could be reconstructed with all methods. On the affected side the mean deviation was 1.10 mm ± 0.23 mm in group I and 0.85 mm ± 0.26 mm in group II. The differences between the groups were significant.

CONCLUSION:

SSM offers a more precise reconstruction of midface defects than mirroring procedures. As an additional element SSM could automatize the CAS workflow in many respects.

KEYWORDS:

Computer-assisted surgery (CAS); Fracture reconstruction; Midface defect; Statistical shape model (SSM)

PMID:
28202219
DOI:
10.1016/j.jcms.2016.12.020
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center