ACTA MEDICA
ACTA MEDICA
Acta Medica (Hradec Králové) is an English language multidisciplinary medical journal. Acta Medica publishes reviews, original articles, brief communications, case reports, announcements, and notices. The journal was founded in 1958 under the title “A Collection of Scientific Works of the Charles University’s Faculty of Medicine in Hradec Králové”. The journal is indexed in Chemical Abstracts, CNKI, DOAJ, EBSCO, Hinari, Index Medicus, MEDLINE, Scopus, and Ulrichsweb.

ACTA MEDICA, Vol 65 No 2 (2022), 59–65

An Investigation of the Accuracy and Reproducibility of 3D Printed Transparent Endodontic Blocks

Martin Smutný, Martin Kopeček, Aleš Bezrouk

DOI: https://doi.org/10.14712/18059694.2022.19
published online: 02. 12. 2022

abstract

Due to a broad spectrum of endodontic rotary instruments on the market and no standardised protocol for comparing their mechanical properties, it can be challenging for clinician to choose proper instruments. In vitro studies using resin blocks with artificial canals can offer many valuable information because of their uniformity compared to studies performed on extracted teeth. To improve precision and reproducibility of artificial canals, 3D printing was used in this study to manufacture endodontic test block samples. 20 commercially available endodontic blocks Endo-Training-Bloc-J by Dentsply Sirona were tested. The mean values of the measured parameters were used for a 3D CAD model of their replicas. 20 copies of the endodontic training blocks were printed from acrylic resin (VeroClear-RGD810, Stratasys, Eden Prairie, USA) using the 3D printer Objet30 Pro (Stratasys, Eden Prairie, USA). The key dimensions of the commercial blocks and the 3D printed blocks were measured under and compared using t – test and Levene’s test for equality of variances. The profiles of the 3D printed artificial canals showed significantly lower dimensional variability when compared with the commercial blocks. 3D polyjet printing proved to be a precise and reproducible method for production of blocks for testing endodontic rotary instruments.

keywords: endodontic training block; 3D printing; additive manufacturing; artificial root canal; J shape resin block; PolyJet printing

Creative Commons License
An Investigation of the Accuracy and Reproducibility of 3D Printed Transparent Endodontic Blocks is licensed under a Creative Commons Attribution 4.0 International License.

210 x 297 mm
periodicity: 4 x per year
print price: 150 czk
ISSN: 1211-4286
E-ISSN: 1805-9694

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