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Additive Manufacturing of Polymer Composites for Dental Application

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Composites and Nanocomposites".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 1753

Special Issue Editor

*
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Guest Editor
Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité-Universitätsmedizin Berlin, 14197 Berlin, Germany
Interests: dentistry; maxillofacial prosthetics; 3D printing; additive manufacturing; CAD; digitization of education
* German Promotion (University of Tuebingen) for Dr. med. dent and German Habilitation for Privatdozent (Ph.D. equivalent) (Humboldt University of Berlin)
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Special Issue Information

Dear Colleagues,

Various polymer materials have wide applications in conservative and prosthetic dentistry, which until recently, were mostly manufactured in an analogue or subtractive way. As additive manufacturing is utilized in the dental field, it has become possible to fabricate composite and ceramic materials using 3D printing. The additive way of production also allows for the manufacturing of hybrid composite-based materials with ceramic particles. The 3D-printed ceramics and hybrid composite-ceramic materials provide new treatment approaches, as they make it possible to produce very fine and thin restorations that measure up to 0.1 layer thick, which was not possible in a subtractive way. This allows us, in some cases, to make the treatment less invasive. Recently, there have been some reports on the clinical application of 3D-printed composite, ceramic and hybrid materials for conservative dentistry and prosthodontics, which provide a direction for deeper research on this topic.

This Special Issue aims to highlight the advantages of 3D-printed composite, ceramic and hybrid restorations and to discuss their potential limitations. All studies into the application of such materials in conservative and prosthetic dentistry, dealing with their mechanical properties and clinical performance, are welcome for submission to the present Special Issue.

Sincerely,

Dr. Alexey Unkovskiy
Guest Editor

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Keywords

  • polymers
  • composites
  • ceramics
  • hybrid materials
  • additive manufacturing
  • subtractive manufacturing
  • 3D printing
  • rapid prototyping
  • SLA
  • DLP
  • LCM
  • minimal invasive dentistry
  • veneers
  • laminate veneers

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Published Papers (1 paper)

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Research

17 pages, 10407 KiB  
Article
The Effect of Build Angle and Artificial Aging on the Accuracy of SLA- and DLP-Printed Occlusal Devices
by Bardia Saadat Sarmadi, Franziska Schmidt, Florian Beuer, Dilan Seda Metin, Philipp Simeon, Robert Nicic and Alexey Unkovskiy
Polymers 2024, 16(12), 1714; https://doi.org/10.3390/polym16121714 - 16 Jun 2024
Viewed by 1229
Abstract
The aim of this study is to investigate the influence of printing material, build angle, and artificial aging on the accuracy of SLA- and DLP-printed occlusal devices in comparison to each other and to subtractively manufactured devices. A total of 192 occlusal devices [...] Read more.
The aim of this study is to investigate the influence of printing material, build angle, and artificial aging on the accuracy of SLA- and DLP-printed occlusal devices in comparison to each other and to subtractively manufactured devices. A total of 192 occlusal devices were manufactured by one SLA-printing and two DLP-printing methods in 5 different build angles as well as milling. The specimens were scanned and superimposed to their initial CAD data and each other to obtain trueness and precision data values. A second series of scans were performed after the specimens underwent an artificial aging simulation by thermocycling. Again, trueness and precision were investigated, and pre- and post-aging values were compared. A statistically significant influence was found for all main effects: manufacturing method, build angle, and thermocycling, confirmed by two-way ANOVA. Regarding trueness, overall tendency indicated that subtractively manufactured splints were more accurate than the 3D-printed, with mean deviation values around ±0.15 mm, followed by the DLP1 group, with ±0.25 mm at 0 degree build angle. Within the additive manufacturing methods, DLP splints had significantly higher trueness for all build angles compared to SLA, which had the highest mean deviation values, with ±0.32 mm being the truest to the original CAD file. Regarding precision, subtractive manufacturing showed better accuracy than additive manufacturing. The artificial aging demonstrated a significant influence on the dimensional accuracy of only SLA-printed splints. Full article
(This article belongs to the Special Issue Additive Manufacturing of Polymer Composites for Dental Application)
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