Maxillofacial prosthetics: A preliminary analysis of resource based relative value scale

Wiens, Jonathan P.; Cowper, Thomas R.; Eekert, Steven E.; Kelly, Terry M.

doi:10.1016/0022-3913(94)90074-4

Cited by 13 publications

(5 citation statements)

References 1 publication

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“…Advanced manufacturing (AM) provides a semi-automated approach to engineer customised products and is set to disrupt the current practices of medicine, where the automated production of highly personalised treatments will radically change existing practice, such as the production of prostheses. The traditional approach for prosthesis manufacture is very manual, expensive and labour-intensive, requiring 14–15 h 11 , 12 of dedicated hand-crafting for an ear prosthesis. AM approaches, on the other hand, reduce the labour time required to manufacture ear prostheses.…”

Section: Discussionmentioning

confidence: 99%

“…The traditional hand-crafted fabrication process, however, is lengthy and retails $2,000–$7,000 per prosthesis 7 , 9 , though the manufacturing costs may be as low as $1,000 10 . A survey by Wiens et al (1994) found that the average time to produce a prosthesis was 14 h 9 min 11 while Mohammed et al reported 15 h 12 . This process typically involves taking an alginate-gel or plaster impression of the contralateral ear if available (microtia is unilateral in 74–93% of cases 13 – 16 ) to obtain patient specific ear morphology which can then be mirrored and the impression-taking process has been described as invasive and uncomfortable 12 , 17 .…”

Section: Introductionmentioning

confidence: 99%

“…The most comprehensive additive manufacturing study for an ear prosthesis was a case study by De Crescenzio et al (2010) 10 which required a total of 10 h 20 min of labour to produce a prosthesis, a reduced labour time from the 14–15 h required to produce a typical handmade prosthesis 11 , 12 . In the present paper, we comprehensively describe an advance manufacturing framework to produce ear prostheses using current technologies, showing significant improvement from previous manufacturing frameworks and providing a benchmark on which further improvements can be implemented.…”

Section: Introductionmentioning

confidence: 99%

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An advanced prosthetic manufacturing framework for economic personalised ear prostheses

Cruz

Ross

Skewes

et al. 2020

Sci Rep

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Craniofacial prostheses are commonly used to restore aesthetics for those suffering from malformed, damaged, or missing tissue. Traditional fabrication is costly, uncomfortable for the patient, and laborious; involving several hours of hand-crafting by a prosthetist, with the results highly dependent on their skill level. In this paper, we present an advanced manufacturing framework employing three-dimensional scanning, computer-aided design, and computer-aided manufacturing to efficiently fabricate patient-specific ear prostheses. Three-dimensional scans were taken of ears of six participants using a structured light scanner. These were processed using software to model the prostheses and 3-part negative moulds, which were fabricated on a low-cost desktop 3D printer, and cast with silicone to produce ear prostheses. The average cost was approximately $3 for consumables and $116 for 2 h of labour. An injection method with smoothed 3D printed ABS moulds was also developed at a cost of approximately $155 for consumables and labour. This contrasts with traditional hand-crafted prostheses which range from $2,000 to $7,000 and take around 14 to 15 h of labour. This advanced manufacturing framework provides potential for non-invasive, low cost, and high-accuracy alternative to current techniques, is easily translatable to other prostheses, and has potential for further cost reduction.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An advanced prosthetic manufacturing framework for economic personalised ear prostheses

Cruz

Ross

Skewes

et al. 2020

Sci Rep

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“…The traditional method of fabricating an auricular prosthesis for unilateral defects takes an average of 14 hours . The process usually involves: (1) making impressions of both the affected area and unaffected side; (2) using the stone casts to sculpt a wax pattern of the proposed ear prosthesis that mirrors the unaffected side; (3) investing the sculpted wax pattern in stone to create a 3‐piece fabrication mold; (4) packing silicone in the mold and allowing for adequate curing time; and (5) finally, hand painting of the silicone prosthesis to match the patient's skin tone.…”

mentioning

confidence: 99%

Digital Workflow of Auricular Rehabilitation: A Technical Report Using an Intraoral Scanner

Ballo

Nguyen

Lee

2019

Journal of Prosthodontics

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Prosthodontic rehabilitation of a congenital or acquired defect of the ear is considered a challenging and skill-dependent procedure. This technical report describes a novel approach for direct digital scanning of the unaffected contralateral ear using an intraoral scanner and external markers. The obtained digital data of the ear was exported, digitally mirrored, and successfully positioned to a virtual model of a human head with a missing ear. This technique demonstrates the potential application of CAD/CAM in the design and fabrication of an auricular prosthesis for patients with a unilateral ear defect.

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“…Esses processos aliados a singularidade geométrica principalmente do pavilhão auricular tornam a elaboração de uma prótese um desafio para o protesiólogo bucomaxilofacial. (WIENS et al, 1994). Fonte: Subburaj et al (2007).…”

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Elaboração de próteses auriculares individualizadas por meio de manufatura apoiada por computador.

Moretto¹

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Agradeço primeiramente à minha noiva, uma pessoa fantástica que admiro todo dia. Seu amor à medicina, seu zelo e sua dedicação na forma que cuida de seus pacientes foram grandes inspirações para dedicar todo meu esforço neste trabalho. Agradeço imensamente à Profa. Dra. Neide Pena Coto pelo apoio incondicional desde o primeiro dia deste trabalho. É a grande idealizadora desta pesquisa e sua conclusão só foi possível a ela. Agradeço ao Prof. Dr. Reinaldo Dias por aceitar, incentivar e dar atenção ao projeto. Seu reconhecimento nacional e internacional na área de próteses bucomaxilofaciais é o reflexo de suas contribuições para a sociedade. Agradeço meu orientador Prof. Dr. Marcelo K. Zuffo pelo apoio, pela confiança, pela amizade e pela total liberdade cedida para a investigação científica. A ciência deve ser sem paredes, sem limitações, sem viés. Obrigado professor.

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Maxillofacial prosthetics: A preliminary analysis of resource based relative value scale

Cited by 13 publications

References 1 publication

An advanced prosthetic manufacturing framework for economic personalised ear prostheses

An advanced prosthetic manufacturing framework for economic personalised ear prostheses

Digital Workflow of Auricular Rehabilitation: A Technical Report Using an Intraoral Scanner

Elaboração de próteses auriculares individualizadas por meio de manufatura apoiada por computador.

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