The place of direct metal laser sintering (DMLS) in dentistry and the importance of annealing

Ayyıldız, Simel

doi:10.1016/j.msec.2015.03.016

Cited by 9 publications

(4 citation statements)

References 3 publications

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“…Case studies for biomedical parts have demonstrated AM bone replacements for jaws, 230 CoCr alloys using SLM (displacing CNC machining), but may require annealing to achieve ideal microstructure. 232 At a market size of $11•2 billion in 2011, the dental prosthetics market is growing and is a significant application area for metal AM. 233 The application of mesh structures is attractive for biomedical parts 48 and also has applications for other uses, such as lithium ion batteries.…”

Section: Applications and Economicsmentioning

confidence: 99%

The metallurgy and processing science of metal additive manufacturing

Sames

List

Pannala

et al. 2016

International Materials Reviews

2,014

788

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Additive manufacturing (AM), widely known as 3D printing, is a method of manufacturing that forms parts from powder, wire or sheets in a process that proceeds layer by layer. Many techniques (using many different names) have been developed to accomplish this via melting or solid-state joining. In this review, these techniques for producing metal parts are explored, with a focus on the science of metal AM: processing defects, heat transfer, solidification, solid-state precipitation, mechanical properties and post-processing metallurgy. The various metal AM techniques are compared, with analysis of the strengths and limitations of each. Only a few alloys have been developed for commercial production, but recent efforts are presented as a path for the ongoing development of new materials for AM processes.

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Section: Applications and Economicsmentioning

confidence: 99%

The metallurgy and processing science of metal additive manufacturing

Sames

List

Pannala

et al. 2016

International Materials Reviews

2,014

788

View full text Add to dashboard Cite

show abstract

“…In inkjet printing, micrometer sized droplets of an ink (typically a photopolymer) are dispensed also using 3-axis stages 10 . Laser melting and sintering 11 , on the other hand, typically do not dispense a material from a nozzle; rather, the high temperature of the laser light is used to either sinter or weld specific regions in a powder bed while a stage moves up or down and the material is added layer-by-layer, thus generating a 3D structure. Lastly, light or lithography printing (which often also use lasers as the light source) use photopolymers that are kept in a Z-axis controlled vat, and the 3D structure results from direct exposition of the polymer to light as the vat or sample holder moves up or down 3 .…”

Section: Introductionmentioning

confidence: 99%

3D printed versus conventionally cured provisional crown and bridge dental materials

et al. 2018

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“…One very important manufacturing step in SLS technologies is the annealing process, which is the heating of the metal object under argon atmosphere above the critical temperature. After maintaining a stable temperature, the object is allowed to cool down [32,33]. This procedure reduces internal stress, softens and homogenizes the object, and increases its ductility.…”

Section: Laser Beam Meltingmentioning

confidence: 99%

“…This procedure reduces internal stress, softens and homogenizes the object, and increases its ductility. However, both temperature and atmospheric pressure parameters directly influence the hardness and microstructure of the object and therefore have to be meticulously controlled [32,33]. If executed properly, SLS-manufactured metal frameworks match the required precision for clinical applications, (i.e.…”

Section: Laser Beam Meltingmentioning

confidence: 99%

A review on current additive manufacturing technologies and materials used for fabrication of metal-ceramic fixed dental prosthesis

Hesse

Özcan

2021

Journal of Adhesion Science and Technology

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The objective of this review was to collect information on available additive manufacturing technologies used for the fabrication of either single crowns or fixed-dental prosthesis (FDP) with a focus on the chemistry, surface characteristics and interaction between frameworks and veneering ceramics. Original scientific papers in MEDLINE (PubMed), Embase, Scopus databases, published between 01 January 1996 and 30 June 2020 were included in this review. The following MeSH terms, search terms and their combinations were used: 'in vitro', 'crowns', 'denture, partial, fixed', 'dentistry', 'fixed dental prosthesis', 'FDP', 'bridges', 'additive manufacturing', 'alloys', 'surface roughness', 'adhesion'. Two reviewers performed screening and analysed the data. Only the studies that reported on chemistry, surface characteristics and ceramic adhesion for FDPs were included. The selection process resulted in the final sample of 91 journal articles. In total, 16 articles were identified related to chemistry of alloys used in additive manufacturing: 1 on surface characteristics, and 9 on adhesion of veneering ceramics to alloys. In addition, review articles, books, patents and manufacturersinformation were retrieved. Accordingly, it was noted that current additive technologies use mainly Co-Cr or titanium alloys but the production of the starting material presently lacks sufficient standardization and regulations. For these alloys, rougher surface microstructure (3.2 ± 0.4 mm) than for cast alloys (2.3 ± 0.6 mm) was reported which may have clinical implications in implant dentistry. There is some evidence that surface roughness contributes to increased bond strength of veneering ceramic to metal frameworks ranging between 24 ± 10 and 54 ± 14 MPa but the detailed underlying metal-ceramic adhesion mechanism remains to be elucidated.

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The place of direct metal laser sintering (DMLS) in dentistry and the importance of annealing

Cited by 9 publications

References 3 publications

The metallurgy and processing science of metal additive manufacturing

The metallurgy and processing science of metal additive manufacturing

3D printed versus conventionally cured provisional crown and bridge dental materials

A review on current additive manufacturing technologies and materials used for fabrication of metal-ceramic fixed dental prosthesis

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