RECONSTRUCTION OF CRANIOFACIAL BONE DEFECTS WITH INDIVIDUAL ALLOPLASTIC IMPLANTS BASED ON CAD/CAM-MANIPULATED CT-DATA

被引:109
作者
EUFINGER, H
WEHMOLLER, M
MACHTENS, E
HEUSER, L
HARDERS, A
KRUSE, D
机构
[1] UNIV HOSP BOCHUM,KNAPPSCHAFTSKRANKENHAUS,DEPT ORAL & MAXILLOFACIAL SURG,BOCHUM,GERMANY
[2] RUHR UNIV BOCHUM,INST PROD SYST & PROC TECH,W-4630 BOCHUM,GERMANY
[3] UNIV HOSP BOCHUM,KNAPPSCHAFTSKRANKENHAUS,DEPT RADIOL & NUCL MED,BOCHUM,GERMANY
[4] UNIV HOSP BOCHUM,KNAPPSCHAFTSKRANKENHAUS,DEPT NEUROSURG,BOCHUM,GERMANY
[5] CIP KONSTRUKT LTD,BOCHUM,GERMANY
来源
JOURNAL OF CRANIO-MAXILLO-FACIAL SURGERY | 1995年 / 23卷 / 03期
关键词
D O I
10.1016/S1010-5182(05)80007-1
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Reconstruction of craniofacial bone defects by intraoperative modelling of autogenous or alloplastic materials may cause undesirable results concerning the implant shape or the long-term maintenance of this shape, Furthermore, the use of alloplastic materials to be modelled intraoperatively may result in an inflammatory tissue response. Therefore the question is raised whether CAD/CAM-techniques may be used for the pre-operative geometric modelling of the implant based on helical computed tomography data. A numerically based 3-dimensional model of the skull defect serves as the basis for a freeform-surfaces design of the implant shape, position and thickness, using modelling tools and programmes developed for industrial CAD/CAM. The precise and individual fit of the implant results from generating its margins by the borders of the defect, whereas the implant surface is generated by the geometry of the non-affected neighbouring bone contours. The implant data run a numerically controlled milling machine to fabricate the individual implant. The reconstruction of post-traumatic defects of the forehead, of post-surgical temporal defects after intracranial haemorrhage, and of a parieto-occipital defect due to ablative tumour surgery are presented as the first clinical experiences of this new method.
引用
收藏
页码:175 / 181
页数:7
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