Reproducibility of different arrangement of resin copings by dental microstereolithography: Evaluating the marginal discrepancy of resin copings

Kim, Dong Yeon; Jeon, Jin Hun; Kim, Ji Hwan; Kim, Hae-Young; Kim, Woong Chul

doi:10.1016/j.prosdent.2016.07.007

Cited by 47 publications

(45 citation statements)

References 26 publications

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“…Multiple castable polymers are available for the different 3D printing technologies (Fig B). These polymers can be processed through conventional procedures and thus, cast metal or pressed lithium disilicate restorations can be obtained . Williams et al reported the first dental CAD/CAM clinical case description for fabricating a castable 3D printed pattern for a metal framework of a removable partial denture (RPD).…”

Section: Prosthodontic Applicationsmentioning

confidence: 99%

“…Moreover, the 3D PP group presented a better internal gap, being most evident at the occlusal measurement. Kim et al evaluated the reproducibility and marginal discrepancy of resin copings fabricated using a SLA printer by repeating 1, 3, or 6 arrays to give a total of 18.…”

Section: Prosthodontic Applicationsmentioning

confidence: 99%

“…These polymers can be processed through conventional procedures and thus, cast metal or pressed lithium disilicate restorations can be obtained. [49][50][51][52][53][54][55][56][57][58][59][60] Williams et al 50 reported the first dental CAD/CAM clinical case description for fabricating a castable 3D printed pattern for a metal framework of a removable partial denture (RPD). The digitalization of the master cast was completed with an extraoral scanner, the undercuts were electronically identified on surveyed virtual casts, and the RPD was digitally designed with CAD software.…”

Section: Printed Castable Patternsmentioning

confidence: 99%

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

Revilla‐León

Özcan

2018

Journal of Prosthodontics

310

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: Prosthodontic Applicationsmentioning

confidence: 99%

Section: Prosthodontic Applicationsmentioning

confidence: 99%

Section: Printed Castable Patternsmentioning

confidence: 99%

See 1 more Smart Citation

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

Revilla‐León

Özcan

2018

Journal of Prosthodontics

310

301

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“…Among them, the polymer-jet 3D printing signiicantly enhanced the it of the interim crowns, particularly in the occlusal region. According to Kim et al [43], the iting accuracy of dental crowns is afected by the number of copings fabricated by micro-stereolithography. Based on the marginal discrepancy, the most precise copings are printed when three arrays are used on a single-built platform.…”

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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“…The marginal fit of the restoration is determined by the Marginal Discrepancy (MD) of a coping [9], defined as the distance from the abutment margin to the metal coping in a straight line. [10] There is no consensus regarding the clinically acceptable limits of marginal fit of dental restorations.…”

Section: Introductionmentioning

confidence: 99%

Investigation the Fitting Accuracy of Cast and SLM Co-Cr Dental Bridges Using Cad Software

Dikova¹,

Vasilev²,

Dzhendov³

et al. 2017

JofIMAB

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ABSTRACT:The aim of the present paper is to investigate the fitting accuracy of Co-Cr dental bridges, manufactured by three technologies, with the newly developed method using CAD software. The four-part dental bridges of Co-Cr alloys were produced by conventional casting of wax models, casting with 3D printed patterns and selective laser melting. The marginal and internal fit of dental bridges was studied out by two methods -silicone replica test and CAD software. As the silicone replica test characterizes with comparatively low accuracy, a new methodology for investigating the fitting accuracy of dental bridges was developed based on the SolidWorks CAD software. The newly developed method allows the study of the marginal and internal adaptation in unlimited directions and high accuracy. Investigation the marginal fit and internal adaptation of CoCr four-part dental bridges by the two methods show that the technological process strongly influences the fitting accuracy of dental restorations. The fitting accuracy of the bridges, cast with 3D printed patterns, is the highest, followed by the SLM and conventionally cast bridges. The marginal fit of the three groups of bridges is in the clinically acceptable range. The internal gap values vary in different regions -it is highest on the occlusal surfaces, followed by that in the marginal and axial areas. The higher fitting accuracy of the bridges, manufactured by casting with 3D printed patterns and SLM, compared to the conventionally cast bridges is a good precondition for their successful implementation in the dental offices and laboratories.

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Reproducibility of different arrangement of resin copings by dental microstereolithography: Evaluating the marginal discrepancy of resin copings

Cited by 47 publications

References 26 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

Properties of Co-Cr Dental Alloys Fabricated Using Additive Technologies

Investigation the Fitting Accuracy of Cast and SLM Co-Cr Dental Bridges Using Cad Software

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