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. 2024 Apr 24;10(1):14.
doi: 10.1186/s41205-024-00214-1.

Effects of autoclaving and disinfection on 3D surgical guides using LCD technology for dental implant

Badreddine Labakoum  1   2 , Amr Farhan  3   4 , Lhoucine Ben Taleb  3 , Azeddine Mouhsen  3 , Aissam Lyazidi  5   6
Affiliations

Effects of autoclaving and disinfection on 3D surgical guides using LCD technology for dental implant

Badreddine Labakoum et al. 3D Print Med. .

Abstract

Background: Surgical guides can improve the precision of implant placement and minimize procedural errors and their related complications. This study aims to determine how different disinfection and sterilization methods affect the size changes of drill guide templates and the mechanical properties of 3D-printed surgical guides made with LCD technology.

Methods: We produced a total of 100 samples. Forty surgical guides were fabricated to assess the implant drill guides' surface and geometric properties. We subjected sixty samples to mechanical tests to analyze their tensile, flexural, and compressive properties. We classified the samples into four groups based on each analytical method: GC, which served as the control group; GA, which underwent autoclave sterilization at 121 °C (+ 1 bar, 20 min); GB, which underwent autoclave sterilization at 134 °C (+ 2 bar, 10 min); and GL, which underwent disinfection with 70% isopropyl alcohol for 20 min.

Result: The results show that sterilization at 121 °C and 134 °C affects the mechanical and geometric characteristics of the surgical guides, while disinfection with 70% isopropyl alcohol gives better results.

Conclusion: Our study of 3D-printed surgical guides using LCD technology found that sterilization at high temperatures affects the guides' mechanical and geometric properties. Instead, disinfection with 70% isopropyl alcohol is recommended.

Keywords: 3D printing; Drill guide templates; Implant guide; LCD technology; Mechanical proprieties; Sterilization.

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Conflict of interest statement

The authors declare that they have no competing interests related to this work.

Figures

Fig. 1
Fig. 1
The specimens are undergoing testing to ascertain the mechanical properties of the materials under investigation: A three-point flexural test; B tensile test with regular Type V test; C compression test
Fig. 2
Fig. 2
The provided image exhibits the measurements of the drill guide templates employed in surgical guides, as obtained by a stereomicroscope
Fig. 3
Fig. 3
Surgical guides compressive load-deflection curves
Fig. 4
Fig. 4
STEREOMICROSCOPY EXAMINATION. The geometric surface dimensions of drill guide templates were measured before and after disinfection and sterilizing procedures
Fig. 5
Fig. 5
Colorimetric maps surface matching between the drill guide templates before and after disinfection or sterilization. A Sterilization autoclave 121 °C; B Sterilization autoclave 134 °C; C Alcohol Isopropyl for 20 min
Fig. 6
Fig. 6
Boxplots of A, the precision (SD), and B, the trueness (RMS) of surface matching between drill guide templates before and after disinfection or sterilization, are depicted in a boxplot
See this image and copyright information in PMC

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