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|Type:||Artigo de periódico|
|Title:||Direct milling of polymethylmethacrylate for cranioplasty applications|
|Author:||da Costa, DD|
|Abstract:||The manufacturing of customized implants for cranioplasty applications has been recognized as a valuable alternative in order to reduce time and surgical costs and to produce better cosmetic results. Generally, the machining processes, in special milling, have been adopted as an intermediary step to manufacture a dedicated mold for casting the designed implant. In this work, we proposed the use of direct milling of simpler implants to shorten the process chain without compromising its dimensional quality. A set of computed tomography (CT) images were acquired from a dried human skull, vetorized, and further used to reconstruct a solid model. Such solid model was processed with computer-aided design (CAD) and computer-aided manufacturing systems to the machining planning. An acrylic implant was directly milled in a three-axis machining center and its external surface was measured with a coordinated measuring machine and compared with its corresponding in the original model (skull) and the digital ones (CT images and CAD). Based on the assessment of dimensional deviations, it is possible to affirm that direct milling can be considered the ultimate phase in the production of customized implants.|
|Editor:||Springer London Ltd|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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