Production tolerance of additive manufactured polymeric objects for clinical applications

Braian, Michael; Jimbo, Ryo; Wennerberg, Ann

doi:10.1016/j.dental.2016.03.020

Cited by 95 publications

(74 citation statements)

References 11 publications

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“…Brain at al studied the manufacturing tolerance of four polymer AM printers (Formiga P110 from EOS, Projet MP 3510 from 3D Systems, Objet 30 and Object Eden from Stratasys) following the manufacturers' parameters. Two geometries were analyzed.…”

Section: Resolution Accuracy and Repeatability Of Sla Dlp Mj Andmentioning

confidence: 99%

Additive Manufacturing Technologies Used for Processing Polymers: Current Status and Potential Application in Prosthetic Dentistry

Revilla‐León

Özcan

2018

Journal of Prosthodontics

346

301

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There are 7 categories of additive manufacturing (AM) technologies, and a wide variety of materials can be used to build a CAD 3D object. The present article reviews the main AM processes for polymers for dental applications: stereolithography (SLA), digital light processing (DLP), material jetting (MJ), and material extrusion (ME). The manufacturing process, accuracy, and precision of these methods will be reviewed, as well as their prosthodontic applications.

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Section: Resolution Accuracy and Repeatability Of Sla Dlp Mj Andmentioning

confidence: 99%

Additive Manufacturing Technologies Used for Processing Polymers: Current Status and Potential Application in Prosthetic Dentistry

Revilla‐León

Özcan

2018

Journal of Prosthodontics

346

301

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“…The accuracy and precision of these technologies could be affected by multiple factors such as layer thickness [16], number of layers needed [2], amount of supportive material [2], building direction of the 3D object [17] and the meticulousness of the post processing process. In a previous study, manufacturing tolerance of four polymers used for AM printers, showed accuracy results ranging between -61 and 92 µm [18].…”

Section: Disscusionmentioning

confidence: 99%

New fabrication method using additive manufacturing technologies for the pattern of pressed lithium disilicate onlay restorations

Revilla‐León

Olea-Vielba

Esteso-Díaz

et al. 2017

BDS

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149Resumo O fluxo de trabalho digital em odontologia permite o processamento digital completo da restauração começando com a impressão digital usando um scanner intraoral até a fabricação da peça final. Os avanços recentes nas tecnologias de impressão 3D abriram novas possibilidades também para os técnicos em prótese dentária através dos quais os procedimentos de cera e fundição nos laboratórios poderiam ser eliminados. Neste relato de caso clínico, descreve-se uma técnica onde o padrão foi fabricado usando a fabricação de aditivos para restaurações do tipo onlay em dissilicato de lítio injetadas. ABsTRACTThe digital workflow in dentistry allows for complete digital processing of the restoration starting with the digital impression using an intraoral scanner to until the fabrication of final reconstruction. Recent advances in 3D printing technologies opened new possibilities also for dental technicians through which wax-up and casting procedures in the laboratories could be eliminated. In this clinical report, a technique is described where the pattern was fabricated using additive manufacturing for pressed lithium disilicate onlay restorations.

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“…According to the ISO/IEC GUIDE 99:2007(E/F) [40], the 'accuracy' is the closeness of agreement between a measured quantity value and a true quantity value of a measured object. The authors [39] deined the terms 'resolution' and 'repeatability'. The resolution refers to the smallest feature that the system can produce, while the reproducibility is described as the system ability to produce consistent output time after time.…”

Section: Properties Of Co-cr Dental Alloys Cast With 3d-printed Paternsmentioning

confidence: 99%

“…Three standardized geometrical igures for accuracy evaluation are described in its Annexes A, B, and C [38]. Braian et al [39] used the igures in the Annexes A and C, specifying the measurement of an inlay-shaped object and a multiunit specimen to simulate a four-unit bridge, for determining the production tolerances of four commercially available additive manufacturing systems, working on the SLS, multi-jet, or poly-jet principles. The samples were printed with diferent layer's thicknesses, optimal for each system, and ensuring the highest product's accuracy (as per the equipment manufacturer).…”

Section: Properties Of Co-cr Dental Alloys Cast With 3d-printed Paternsmentioning

confidence: 99%

Properties of Co-Cr Dental Alloys Fabricated Using Additive Technologies

Dikova¹

2018

Biomaterials in Regenerative Medicine

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The aim of the present paper is to make a review of the properties of dental alloys, fabricated using Additive Technologies (AT). The microstructure and mechanical properties of Co-Cr alloys as well as the accuracy and surface roughness of dental constructions are discussed. In dentistry two diferent approaches can be applied for production of metal frameworks using AT. According to the irst one the wax/polymeric cast paterns are fabricated by 3D printing, than the constructions are cast from dental alloy with asprinted paterns. Through the second one the metal framework is manufactured form powder alloy directly from 3D virtual model by Selective Electron Beam Melting (SEBM) or Selective Laser Melting (SLM). The microstructure and mechanical properties of Co-Cr dental alloys, cast using 3D printed paterns, are typical for cast alloys. Their dimensional and adjustment accuracy is higher comparing to constructions, produced by traditional lost-wax casting or by SLM. The surface roughness is higher than that of the samples, cast by conventional technology, but lower comparing to the SLM objects. The microstructure of SLM Co-Cr dental alloys is ine grained and more homogeneous comparing that of the cast alloys, which deines higher hardness and mechanical properties, higher wear and corrosion resistance.Keywords: materials science and engineering, biomaterials, regenerative stomatology, additive technologies, Co-Cr dental alloys, microstructure and properties IntroductionDental alloys on the basis of cobalt and chromium are one of the most preferred for production of metal frameworks of dental constructions because of their high strength, high corrosion and wear resistance, high biocompatibility, and a relatively low cost [1,2]. The chemical composition of Co-Cr dental alloys consists of 53-67% of Co, 25-32% of Cr, 2-6% of Mo, and small © 2018 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.quantities of W, Si, Al, and others [3]. Cr, Mo, and W are added for strengthening of the solid solution. Due to the relatively large amount of Cr, dense passive layer of Cr 2 O 3 with 1-4 nm thickness on the surface as well as carbides in the microstructure of the details is formed, determining the high hardness, high corrosion, and wear resistance [4,5]. According to the phase diagram, Co-Cr dental alloys are characterized with face-centered cubic (fcc) latice, γ phase in high temperatures, and with hexagonal close packed (hcp) latice, ε phase in room temperature [4,6]. The γ phase deines the ductility, while the ε phase deines the corrosion and wear resistance of the alloy [7]. In proper alloying, the microstructure of the Co-Cr dental alloys consists mainly of γ phase and carbides of the M 23 C 6 type [4]. Therefore, the properties of Co-Cr dental alloys depend on the ratio between...

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Production tolerance of additive manufactured polymeric objects for clinical applications

Cited by 95 publications

References 11 publications

Additive Manufacturing Technologies Used for Processing Polymers: Current Status and Potential Application in Prosthetic Dentistry

Additive Manufacturing Technologies Used for Processing Polymers: Current Status and Potential Application in Prosthetic Dentistry

New fabrication method using additive manufacturing technologies for the pattern of pressed lithium disilicate onlay restorations

Properties of Co-Cr Dental Alloys Fabricated Using Additive Technologies

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