Articles & Issues

Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received September 26, 2024
Accepted January 18, 2025
Available online May 25, 2025

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

Effect of Layer Thickness on Marginal Gap of Zirconia Crowns Manufactured Using Additive Manufacturing with Top-Down Approach

Sang-Kyu Lee¹ Chan Park² Kwang-Ho Jo¹ Sang-Hyun Choi³ Hyein Lee Kyoung-Jun Jang^1† Taekyung Yu^†

Department of Chemical Engineering, College of Engineering, Integrated Engineering Major , Kyung Hee University , Yongin 17140 , Republic of Korea ¹Research Institute , 3D Controls Co , Busan 46721 , Republic of Korea ²Department of Prosthodontics, School of Dentistry , Chonnam National University , Gwangju 61186 , Republic of Korea ³School of Robotics and Automation Engineering , Dongyang Mirae University , Seoul 08221 , Republic of Korea

jangkj@3dcontrols.co.kr, tkyu@khu.ac.kr

Korean Journal of Chemical Engineering, May 2025, 42(5), 1143-1147(5)
https://doi.org/10.1007/s11814-025-00404-5

Abstract

For effi cient 3D printing, fast printing (thick print layers) is necessary; however, in ceramic 3D printing, which involves

printing heavy materials, changes in print speed can signifi cantly aff ect precision. This study compares and analyzes the

marginal fi t of zirconia crowns produced with diff erent layer thicknesses using a top-down additive manufacturing process.

The results for a layer thickness of 50 μm showed lower fi t in areas opposite the support compared to the results for layer

thicknesses of 10 and 25 μm. It is believed that during very fast printing, the load applied during printing cannot be sustained.

These fi ndings can be used as important information for future printing of zirconia prostheses.

Keywords

Zirconia · Additive manufacturing · Crowns · Print layer · Ceramic