Comparison of fracture resistance between cast, CAD/CAM milling, and direct metal laser sintering metal post systems

Bilgin, Mehmet Selim; Erdem, Alı Fuat; Dilber, Erhan; Ersoy, İbrahim

doi:10.1016/j.jpor.2015.08.001

Cited by 43 publications

(43 citation statements)

References 20 publications

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“…Techniques such as stereolithography were implemented to manufacture resin models for posterior manufacture of dental prostheses (crowns and bridges) by conventional process of lost wax castings. Mechanical, chemical, and microstructural properties are evaluated in comparison to new AM technologies, for example, the selective laser melting (SLM) in relation to conventional techniques as lost wax casting [21][22][23]. In this way, the preparation of medical and dental components provides customized final components with high mechanical properties, compared to conventional techniques (see Figure 1) [24].…”

Section: Introductionmentioning

confidence: 99%

Perspective of Additive Manufacturing Selective Laser Melting in Co-Cr-Mo Alloy in the Consolidation of Dental Prosthesis

Mergulhão¹,

Podestá²,

Neves³

2018

Biomaterials in Regenerative Medicine

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This chapter seeks to compare the properties of samples manufactured by additive manufacturing (AM) by the selective laser melting (SLM) technology and compare with the precision casting (PC) processes using the Co-Cr-Mo (ASTM F75) alloy to manufacture of dental prosthesis. This AM process can be manufactured three-dimensional models by means of a laser beam that completely melts particles of powder deposited layer by layer. However, it is still relevant to know the properties of: performance, dimensional, mechanical and microstructural of this laser melting process and compare with a convencional process. The results of mechanical evaluation showed that the SLM technique provides superior mechanical properties compared to those obtained by the PC technique. It is possible to verify that the consolidation by SLM technique results in lower presence of porosity than PC technique. In addition, PC samples presented a gross dendritic microstructure of casting process. Microstructural analysis of SLM samples results in a characteristic morphology of layer manufacturing with ultrafine grains and a high chemical homogeneity. In this way, the development of the present study evidenced to improve the manufacture of customized components (copings) using the SLM technology.

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Section: Introductionmentioning

confidence: 99%

Perspective of Additive Manufacturing Selective Laser Melting in Co-Cr-Mo Alloy in the Consolidation of Dental Prosthesis

Mergulhão¹,

Podestá²,

Neves³

2018

Biomaterials in Regenerative Medicine

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“…Beside that all laboratory procedures can be standardized by computerized technology which would minimize the human variations during fabrication of any prosthesis. 10 On the other hand, many studies stated that, the conventional fabrication methods steps necessitate considerable human intervention and materials manipulation that may additionally offer inherent processing shrinkage and/or expansion. This may lead to increased processing errors and inaccuracies which may explain the decreased retention values of conventional dentures in comparison to those of digital dentures in addition to the increase of surface roughness.…”

Section: Discussionmentioning

confidence: 99%

Comparative Evaluation Of Physical Properties Of Conventionally Constructed Versus CAD/CAM Milled Frameworks For Kennedy Class I Partial Dentures

Mohamed

Hassan

2019

Egyptian Dental Journal

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Aim: The objective of this study was to compare the physical properties (retention, surface roughness, and wear) of conventionally constructed (pressed) bioHPP removable partial denture (RPD) frameworks versus computer aided designed-computer manufactured (CAD/CAM) RPD frameworks. Materials and Methods: Over standardized epoxy resin cast models, twenty frameworks were fabricated and divided equally into two groups, group A received ten conventionally fabricated (pressed) bioHPP frameworks and group B received ten CAD/CAM milled frameworks. Each framework was subjected to insertion/ removal cycles by using universal testing machine, (360, 720, 1080, 1440, 2116 cycles) representing time intervals baseline, three, six, nine-and twelvemonths respectively, where retention, wear and surface roughness were measured before and after each time interval. Results: Group B(CAD/CAM) milled RPD frameworks results showed statistically significant difference with higher mean values than group A (pressed) RPD frameworks results in all measured parameters throughout all time intervals. Conclusion: Within the limitations of this study, it could be concluded that either with milled or pressed way of construction BioHPP remains a reliable material that could be used to construct a highly accurate RPD framework with acceptable physical properties.

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“…40,41 The dental literature comparing microstructural, mechanical and electrochemical properties of casted, milled, and PFB AM metal dental alloys is scarce. 3,39,[42][43][44][45][46][47][48][49][50][51][52] Moreover, the chemical composition of the different Co-Cr and Ti dental alloys vary due to the different manufacturing procedures complicating direct comparisons. 3,44 Different authors reported that the manufacturing method has a strong effect on the metal microstructure.…”

Section: Conventional Versus Am Proceduresmentioning

confidence: 99%

A Review of the Applications of Additive Manufacturing Technologies Used to Fabricate Metals in Implant Dentistry

Revilla‐León

Sadeghpour²,

Özcan

2020

Journal of Prosthodontics

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Purpose To review the primary additive manufacturing (AM) technologies used to fabricate metals in implant dentistry and compare them to conventional casting and subtractive methods. Methods The literature on metal AM technologies was reviewed, and the AM procedures and their current applications in implant dentistry were collated and described. Collection of published articles about metal AM in dental field data sources: MEDLINE, EMBASE, EBSCO, and Web of Science searched. All studies related to AM technology description, analysis, and evaluation of applications in implant dentistry, including AM titanium (Ti) dental implants, customized Ti mesh for bone grafting techniques, cobalt‐chromium (Co‐Cr) frameworks for implant impression procedures, and Co‐Cr and Ti frameworks for dental implant‐supported prostheses were reviewed. Results Literature has demonstrated the potential of AM technologies to fabricate dental implants, root‐analog implants, and functionally graded implants; as well as the ability to fabricate customized meshes for bone grafting procedures. Metal AM technologies provide a reliable method to manufacture frameworks for implant impression procedures. Co‐Cr and Ti AM frameworks for implant‐supported prostheses provide a clinically acceptable discrepancy at the implant‐prostheses interface. Conclusions Additional clinical studies are required to assess the long‐term clinical performance, biological and mechanical complications, and prosthetic restoration capabilities of additively manufactured dental implants. Moreover, further studies are needed to evaluate their long‐term success and survival rates and biological and mechanical complications of AM implant‐supported prostheses.

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Comparison of fracture resistance between cast, CAD/CAM milling, and direct metal laser sintering metal post systems

Abstract: Co-Cr metal posts fabricated by CCM and DMLS could be an alternative to TC processing in daily clinical application.

Cited by 43 publications

References 20 publications

Perspective of Additive Manufacturing Selective Laser Melting in Co-Cr-Mo Alloy in the Consolidation of Dental Prosthesis

Perspective of Additive Manufacturing Selective Laser Melting in Co-Cr-Mo Alloy in the Consolidation of Dental Prosthesis

Comparative Evaluation Of Physical Properties Of Conventionally Constructed Versus CAD/CAM Milled Frameworks For Kennedy Class I Partial Dentures

A Review of the Applications of Additive Manufacturing Technologies Used to Fabricate Metals in Implant Dentistry

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