Page 84 - IJB-9-2

International Journal of Bioprinting

RESEARCH ARTICLE
Steam-sterilized and degradable fused

filament fabrication-printed polylactide/
polyhydroxyalkanoate surgical guides for

dental implants: Are they accurate enough for
static navigation?

1
Matthias Gielisch *, Diana Heimes , Daniel G. E. Thiem , C. Boesing ,
1
1
2
M. Krumpholtz , B. Al-Nawas , Peer W. Kämmerer 1
1
2
1 Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2,
55131 Mainz, Germany
2 Bösing Dental GmbH & CO. KG, Franz-Kirsten-Straße 1, 55411 Bingen, Germany
Abstract

Three-dimensional (3D) printing is a rapidly evolving field and has gained
*Corresponding authors: increasing importance in the medical sector. However, the increasing usage of
Matthias Gielisch printing materials is accompanied by more wastages. With a rising awareness of the
(matthias.gielisch@uni-mainz.de)
environmental impact of the medical sector, the development of highly accurate
Citation: Gielisch M, Heimes D, and biodegradable materials is of great interest. This study aims to compare the
Thiem DGE, et al., 2023, Steam-
sterilized and degradable fused accuracy of polylactide/polyhydroxyalkanoate (PLA/PHA) surgical guides printed
filament fabrication-printed by fused filament fabrication and material jetted guides of MED610 in fully guided
polylactide/polyhydroxyalkanoate dental implant placement before and after steam sterilization. Five guides were
surgical guides for dental implants:
Are they accurate enough for static tested in this study and each was either printed with PLA/PHA or MED610 and either
navigation? Int J Bioprint, 9(2): 655. steam-sterilized or not. After implant insertion in a 3D-printed upper jaw model,
https://doi.org/10.18063/ijb.v9i2.655 the divergence between planned and achieved implant position was calculated by
Received: July 11, 2022 digital superimposition. Angular deviation and 3D deviation at the base and the
apex were determined. Non-sterilized PLA/PHA guides showed an angle deviation
Accepted: September 12, 2022
of 0.38 ± 0.53° compared to 2.88 ± 0.75° in sterile guides (P > 0.001), an offset of
Published Online: December 23, 0.49 ± 0.21 mm and 0.94 ± 0.23 mm (P < 0.05), and an offset at the apex of 0.50
2022 ± 0.23 mm before and 1.04 ± 0.19 mm after steam sterilization (P < 0.025). No
Copyright: © 2022 Author(s). statistically significant difference could be shown for angle deviation or 3D offset at
This is an Open Access article both locations for guides printed with MED610. PLA/PHA printing material showed
distributed under the terms of the
Creative Commons Attribution significant deviations in angle and 3D accuracy after sterilization. However, the
License, permitting distribution, reached accuracy level is comparable to levels reached with materials already used
and reproduction in any medium, in clinical routine and therefore, PLA/PHA surgical guide is a convenient and green
provided the original work is
properly cited. alternative.
Publisher’s Note: Whioce
Publishing remains neutral with Keywords: Polylactide; Polyhydroxyalkanoate; Three-dimensional printing; Surgical
regard to jurisdictional claims in
published maps and institutional guide; Dental implants; Fused filament fabrication
affiliations.

Volume 9 Issue 2 (2023) 76 https://doi.org/10.18063/ijb.v9i2.655