Trueness and surface characteristics of 3-dimensional printed casts made with different technologies

Three-dimensional (3D) printers should be capable of fabricating products with high accuracy for potential use in a wide range of dental applications. The trueness and surface characteristics of 3D-printed casts made with different technologies remain unclear. The purpose of this in vitro study was...

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Bibliographic Details
Published in:The Journal of prosthetic dentistry 2024-12, Vol.132 (6), p.1324.e1-1324.e11
Main Authors: Young Kim, Ryan Jin, Cho, Su-Min, Jung, Woo-Sun, Park, Ji-Man
Format: Article
Language:English
Subjects:
Computer-Aided Design
Dental Casting Technique
Dental Impression Technique - instrumentation
Dental Prosthesis Design - methods
Humans
In Vitro Techniques
Microscopy, Electron, Scanning
Models, Dental
Printing, Three-Dimensional
Surface Properties
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Summary:Three-dimensional (3D) printers should be capable of fabricating products with high accuracy for potential use in a wide range of dental applications. The trueness and surface characteristics of 3D-printed casts made with different technologies remain unclear. The purpose of this in vitro study was to evaluate the trueness and surface characteristics of 4 types of dental casts printed using 6 different 3D printers. Four dental casts prepared for intracoronal and extracoronal restorations were printed using 6 different 3D printers—2 printers of each printing technology (FDM: Creator, Lugo; DLP: D2, ND5100; SLA: Form 2, Form 3). The printed casts were scanned to obtain standard tessellation language (STL) data sets that were superimposed onto the reference to evaluate their trueness (n=15). Trueness was measured based on overall deviations for each cast and for sectional deviations within the cavities. For qualitative evaluation, the surface characteristics of the 3D-printed casts were analyzed by using a digital camera, stereomicroscope, and scanning electron microscope. Statistical analyses were conducted using the Kruskal-Wallis test, followed by multiple Mann-Whitney U tests for pairwise comparisons among groups (α=.05). The overall median trueness values were lowest with the Form 3 (27.9 μm), followed by the ND5100 (30.0 μm), Lugo (37.1 μm), D2 (41.4 μm), Form 2 (46.9 μm), and Creator (83.3 μm) (P
ISSN:0022-3913
1097-6841
DOI:10.1016/j.prosdent.2022.12.002