A classification of cranial implants based on the degree of difficulty in computer design and manufacture

Poukens, Jules; Laeven, Paul; Beerens, Maikel; Nijenhuis, Gerard; Sloten, Jos Vander; Stoelinga, Paul J.W.; Keßler, Peter

doi:10.1002/rcs.171

Cited by 52 publications

(61 citation statements)

References 13 publications

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“…Direct AM applications in the medical field are still rather rare. There are case studies on custom-made implants [22][23][24][25] and dental crowns and bridges [26] made by these technologies. Direct AM has been suggested as an effective methodology also for patient-and operation-specific instruments [27].…”

Section: Introductionmentioning

confidence: 99%

A digital process for additive manufacturing of occlusal splints: a clinical pilot study

Salmi

Paloheimo

Tuomi

et al. 2013

J. R. Soc. Interface.

111

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The aim of this study was to develop and evaluate a digital process for manufacturing of occlusal splints. An alginate impression was taken from the upper and lower jaws of a patient with temporomandibular disorder owing to cross bite and wear of the teeth, and then digitized using a table laser scanner. The scanned model was repaired using the 3DATA EXPERT software, and a splint was designed with the VISCAM RP software. A splint was manufactured from a biocompatible liquid photopolymer by stereolithography. The system employed in the process was SLA 350. The splint was worn nightly for six months. The patient adapted to the splint well and found it comfortable to use. The splint relieved tension in the patient's bite muscles. No sign of tooth wear or significant splint wear was detected after six months of testing. Modern digital technology enables us to manufacture clinically functional occlusal splints, which might reduce costs, dental technician working time and chair-side time. Maximum-dimensional errors of approximately 1 mm were found at thin walls and sharp corners of the splint when compared with the digital model.

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Section: Introductionmentioning

confidence: 99%

A digital process for additive manufacturing of occlusal splints: a clinical pilot study

Salmi

Paloheimo

Tuomi

et al. 2013

J. R. Soc. Interface.

111

View full text Add to dashboard Cite

show abstract

“…Despite good results in reconstructing these defects using customized titanium and polyacryl-ether-ether-ketone (PEEK) implants the manufacturing is costly and can only be performed in specialized medical centres or institutions 12 .…”

mentioning

confidence: 99%

“…Periosteal elevation can be used to gain bone in atrophic jaws as a preimplantological treatment and in cranio-maxillofacial surgery to reconstruct large skull bone defects 12 . Despite good results in reconstructing these defects using customized titanium and polyacryl-ether-ether-ketone (PEEK) implants the manufacturing is costly and can only be performed in specialized medical centres or institutions 12 .…”

mentioning

confidence: 99%

Static and dynamic periosteal elevation: a pilot study in a pig model

Tudor

Bumiller

Birkholz

et al. 2010

International Journal of Oral and Maxillofacial Surgery

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“…They can deliver a more accurate fit, reduce theatre time, reduce the likelihood of surgical revisions (Singare et al, 2009), decrease stress shielding and bone resorption (Harrysson et al, 2008), incorporate tailored mechanical properties (Parthasarathy et al, 2011), and improve osseointegration (Palmquist et al, 2011). Many publications demonstrate this in AM case-studies ranging from cranioplasty plates (Poukens et al, 2008), to orbital floor reconstruction implants (Salmi et al, 2012), and total mandible replacements (Xilloc, 2012).…”

Section: Cad/am Metal Implantsmentioning

confidence: 99%

Additively manufactured maxillofacial implants and guides – achieving routine use

Peel

Eggbeer

2016

Rapid Prototyping Journal

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Structured Abstract:Purpose: The technical efficacy of, and clinical benefits from using Computer Aided Design (CAD) and Additive Manufacturing (AM) in the production of patient-specific devices (implants and guides) has been established. Despite this, they are still not in routine clinical use. With AM equipment and CAD tool costs largely outside of the clinician's or designer's control, the opportunity exists to explore design process improvement routes to facilitate routine health service implementation. This paper identifies the key design process factors acting as drivers or barriers to this aim.Methodology / approach: A literature review, new data from three separate clinical case studies, and experience from an institute working on collaborative research and commercial application of CAD/AM in the maxillofacial specialty were analysed to extract a list and formulate models of design process factors.Findings: A semi-digital design and fabrication process is currently the lowest cost and shortest duration for cranioplasty implant production. The key design process factor to address is the fidelity of the device design specification. Implications / limitations:Further research into the relative value of, and best methods to address the key factor is required; in order to work towards the development of new design tools. A wider range of benchmarked case studies is required to better generalise findings beyond one implant type.Originality / value: Design process factors are identified (building on previous work largely restricted to technical and clinical efficacy). Additionally, three implant design and fabrication workflows are directly compared for costs and time. Unusually, a design process failure is detailed. A new model is proposed -describing design process factor relationships and the desired impact of future design tools.

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A classification of cranial implants based on the degree of difficulty in computer design and manufacture

Abstract: The proposed classification reflects the degree of difficulty in designing and manufacturing of implants and can be very useful when comparing treatment results of skull defects for clinical or scientific purposes.

Cited by 52 publications

References 13 publications

A digital process for additive manufacturing of occlusal splints: a clinical pilot study

A digital process for additive manufacturing of occlusal splints: a clinical pilot study

Static and dynamic periosteal elevation: a pilot study in a pig model

Additively manufactured maxillofacial implants and guides – achieving routine use

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