Materials and techniques for osseous skull reconstruction

Spetzger, Uwe; Vougioukas, Vassilios I.; Schipper, Jörg

doi:10.3109/13645701003644087

Cited by 104 publications

(97 citation statements)

References 34 publications

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“…The selection of cranioplasty materials is normally based on the requirements of such as biocompatibility, material properties and surgeon's experience and preference. Technical readiness for clinical application, short lead time, low cost and ease of manufacture for alloplastic cranioplasty are also important considerations [2].…”

Section: Introductionmentioning

confidence: 99%

“…However, in spite of the common use and increasing need for titanium based cranial reconstruction, there is a wide variety of methods including casting [3], manual shaping [4,5] and rubber press forming [6][7][8] commonly used in the manufacture of cranial reconstruction. Even with the assistance of advanced CAD/CAM (computer-aided design and manufacture), computed tomographic (CT) and magnetic resonance imaging (MRI) technologies [2,3,[6][7][8], the processes needed to manufacture customised casting moulds, templates and forming dies in conventional methods of cranial manufacturing is not only costly but also time consuming often normally requiring a few days up to 2 weeks to completion depending on considerations of such as technical planning and whether there is a case of surgical urgency [2,6,7]. In recent years, 3D printing or additive manufacturing based technologies have made rapid advances and it is possible to complete the 3D printing of a cranial or a maxillofacial prosthetic part within several hours [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Titanium based cranial reconstruction using incremental sheet forming

Lü

Shi

et al. 2014

Int J Mater Form

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In this paper, we report recent work in cranial plate manufacturing using incremental sheet forming (ISF) process. With a typical cranial shape, the ISF process was used to manufacture the titanium cranial shape by using different ISF tooling solutions with and without backing plates. Detailed evaluation of the ISF process including material deformation and thinning, geometric accuracy and surface finish was conducted by using a combination of experimental testing and Finite Element (FE) simulation. The results show that satisfactory cranial shape can be achieved with sufficient accuracy and surface finish by using a feature based tool path generation method and new ISF tooling design. The results also demonstrate that the ISF based cranial reconstruction has the potential to achieve considerable lead time reduction as compared to conventional methods for cranial plate manufacturing. This outcome indicates that there is a potential for the ISF process to achieve technological advances and economic benefits as well as improvement to quality of life.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Titanium based cranial reconstruction using incremental sheet forming

Lü

Shi

et al. 2014

Int J Mater Form

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“…It is good for an osteoconduction. 4 However, it cannot be used in large defects and can cause donor site morbidity. Also, its result depends on the harvesting technique and the incidence rate of bone resorption ranges from 3% to 12%.…”

Section: Discussionmentioning

confidence: 99%

The Manufacture of Custom Made 3D Titanium Implant for Skull Reconstruction

Cho¹,

Yun²,

Shim³

et al. 2014

Journal of International Society for Simulation Surgery

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Nowadays, with advanced 3D printing techniques, the custom-made implant can be manufactured for the patient. Especially in skull reconstruction, it is difficult to design the implant due to complicated geometry. In large defect, an autograft is inappropriate to cover the defect due to donor morbidity. We present the process of manufacturing the 3D custom-made implant for skull reconstruction. There was one patient with skull defect repaired using custom-made 3D titanium implant in the plastic and reconstructive surgery department. The patient had defect of the left parieto-temporal area after craniectomy due to traumatic subdural hematoma. Custom-made 3D titanium implants were manufactured by Medyssey Co., Ltd. using 3D CT data, Mimics software and an EBM (Electron Beam Melting) machine. The engineer and surgeon reviewed several different designs and simulated a mock surgery on 3D skull model. During the operation, the custom-made implant was fit to the defect properly without dead space. The operative site healed without any specific complications. In skull reconstruction, autograft has been the treatment of choice. However, it is not always available and depends on the size of defect and donor morbidity. As 3D printing technique has been advanced, it is useful to manufacture custom-made implant for skull reconstruction.

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“…After polymerisation in approximately 6-8 minutes, it hardens and during hardening an exothermic process occurs. The temperature may increase up to 70 degrees Celsius (1,8).…”

Section: █ Discussionmentioning

confidence: 99%