Polypropylene–polyester cranial prostheses prepared with CAD/CAM technology. Report of first 15 cases

Kasprzak, Piotr; Tomaszewski, Grzegorz; Wróbel-Wiśniewska, G; Zawirski, M

doi:10.1016/j.clineuro.2010.12.010

Cited by 9 publications

(3 citation statements)

References 7 publications

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“…Actually, a promising alternative to the above mentioned materials is represented by the adoption of polymers for prosthetic implants: methyl-methacrylate, being costeffective and reducing the occurrence of intoxication, is widely adopted in cranioplasty [6]. On the other hand, the proper selection of the manufacturing process is a key point: stereolitography, as well as the CAD/CAM approach, is widely adopted since it facilitates, speeds up and improves the quality of surgical procedures [7][8][9][10]. Additive manufacturing (3D printing) represents one of the newest process, widely adopted for ABS plastic implants [10,11].…”

Section: Introductionmentioning

confidence: 99%

Biomedical Titanium alloy prostheses manufacturing by means of Superplastic and Incremental Forming processes

et al. 2016

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Abstract. The present work collects some results of the three-years Research Program "BioForming", funded by the Italian Ministry of Education (MIUR) and aimed to investigate the possibility of using flexible sheet forming processes, i.e. Super Plastic Forming (SPF) and Single Point Incremental Forming (SPIF), for the manufacturing of patient-oriented titanium prostheses. The prosthetic implants used as case studies were from the skull; in particular, two different Ti alloys and geometries were considered: one to be produced in Ti-Gr23 by SPF and one to be produced in Ti-Gr2 by SPIF. Numerical simulations implementing material behaviours evaluated by characterization tests were conducted in order to design both the manufacturing processes. Subsequently, experimental tests were carried out implementing numerical results in terms of: (i) gas pressure profile able to determine a constant (and optimal) strain rate during the SPF process; (ii) tool path able to avoid rupture during the SPIF process. Post forming characteristics of the prostheses in terms of thickness distributions were measured and compared to data from simulations for validation purposes. A good correlation between numerical and experimental thickness distributions has been obtained; in addition, the possibility of successfully adopting both the SPF and the SPIF processes for the manufacturing of prostheses has been demonstrated.

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Section: Introductionmentioning

confidence: 99%

Biomedical Titanium alloy prostheses manufacturing by means of Superplastic and Incremental Forming processes

et al. 2016

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“…But at the same time, it was hardly acceptable for patients with very big defects, with defects of complicated shapes, or in visible areas of the head [12]. It took some years to develop a technology allowing such shaping of the knitwear which was not only technologi cally possible but also economically acceptable for the customer, especially in Polish conditions [13]. The initial stage of the research was completed in 2007, and between February 2008 and May 2015 there were 251 prostheses implanted in various centers in Poland, Lithuania, Latvia, Russia and Brazil.…”

Section: Introductionmentioning

confidence: 99%

“…Such grouping of the patients originated in the Social In surance Institution predication procedure [13] and was based on working ability of a person in direct relation to her/his education and the job as indicated in Polish regulations [14,15]. Each patient was classified to one of the groups above based on his or her health status only, disregarding the age (i.e., whether or not the patient was within the "working age" bracket).…”

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confidence: 99%

Cranioplasty as the return-to-work factor – 112 patients with cranial defects treated in the Department of Neurosurgery at the Medical University Of Lodz

Kasprzak

Ormezowska

Jaskólski

2017

Int J Occup Med Environ Health

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Objectives: The number of craniectomies and the consequent reconstructive procedures has grown during the past decades. Cranial defects and methods of their repair could have some influence on work capability of the patients and their employ ability. Material and Methods: The authors analyzed a group of 112 patients with cranial defects treated in the Department of Neurosurgery at the Medical University of Lodz, Poland, in the course of the katamnestic period longer than 6 months after reconstructive operation, and observed them between February 2008 and February 2015. Their work capability and employment were compared, all the patients were interviewed concerning the reasons for not working according to the So cial Insurance Institution predication procedure. Results: Before the cranioplasty, all the patients were capable of work ing without limitations according to biological criteria and 89 of them were employed. Twenty-three not working people consisted of 6 pupils, 7 retired and 10 not working for other reasons. During the period between the craniectomy and the cranioplasty, 88 patients were capable of working and only 2 were employed. After the reconstruction, 93 were capable of working without limitations and 16 -with limitations. Forty-seven were employed during the period of the follow-up, the rest of patients consisted of 2 pupils, 13 retired and 50 not working for various reasons. Conclusions: Cranioplasty is a very important factor contributing to return to work. This outcome may be seen as having a great social value and be add ed to the functions of cranial repair as protective, esthetic and normalizing the intracranial pressure previously described in the literature. Int J Occup Med Environ Health 2017;30(5):803-809

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Experimental investigation of the mechanical performances of titanium cranial prostheses manufactured by super plastic forming and single-point incremental forming

Ambrogio

Palumbo

Sgambitterra

et al. 2018

Int J Adv Manuf Technol

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Polypropylene–polyester cranial prostheses prepared with CAD/CAM technology. Report of first 15 cases

Cited by 9 publications

References 7 publications

Biomedical Titanium alloy prostheses manufacturing by means of Superplastic and Incremental Forming processes

Biomedical Titanium alloy prostheses manufacturing by means of Superplastic and Incremental Forming processes

Cranioplasty as the return-to-work factor – 112 patients with cranial defects treated in the Department of Neurosurgery at the Medical University Of Lodz

Experimental investigation of the mechanical performances of titanium cranial prostheses manufactured by super plastic forming and single-point incremental forming

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