使用统计形状模型对中面部缺损进行虚拟重建。

Virtual reconstruction of midface defects using statistical shape models.

作者信息

Semper-Hogg Wiebke, Fuessinger Marc Anton, Schwarz Steffen, Ellis Edward, Cornelius Carl-Peter, Probst Florian, Metzger Marc Christian, Schlager Stefan

机构信息

Department of Oral and Maxillofacial Surgery (Chairman: Prof. Dr. Dr. Rainer Schmelzeisen), Albert-Ludwigs University Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany.

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.

出版信息

J Craniomaxillofac Surg. 2017 Apr;45(4):461-466. doi: 10.1016/j.jcms.2016.12.020. Epub 2016 Dec 24.

DOI:10.1016/j.jcms.2016.12.020

PMID:28202219

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.

摘要