Articles & Issues
- Language
- korean
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received October 14, 2025
Revised November 17, 2025
Accepted November 29, 2025
Available online December 22, 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.
Latest issues
Methyl Methacrylate로 표면 처리된 실리카 분말이 3D 프린팅된 임시치아의 굴곡강도에 미치는 영향
Effect of Silica Powders Surface-Treated with Methyl Methacrylate on the Flexible Strength of 3D-Printed Temporary Crown
https://doi.org/10.9713/kcer.2026.64.1.105149
Download PDF
Abstract
본 연구에서는 methyl methacrylate (MMA)로 표면처리된 실리카 분말을 이용하여 임시치아용 레진을 제조하고 , 이를 LCD 타입의 3D 프린터로 임시치아를 출력하여 실리카 분말이 굴곡강도 및 출력 정확도 등의 임시치아의 주요 물성에 미치는 영향을 조사하였다 . 임시치아용 레진 제조 시 아크릴 올리고머와 아크릴 모노머로 urethane dimethacrylate (UDMA) 와 trimethylolpropane trimethacrylate (TMPTMA)를 각각 사용하였으며, 광개시제로서 phenylbis(2,4,6-trimethylben zoyl)phosphine oxide (BAPO)를 사용하였다 . 또한 MMA로 표면 처리된 실리카 분말은 각각 1 μm와 3 μm 크기의 입 자를 사용하였다 . MMA로 표면 처리된 실리카 분말이 첨가되지 않은 임시치아용 레진은 점도 358.3 cP, 굴곡강도 118.6 MPa, 출력 정확도 ± 25μm의 물성을 보였으나 , 1 μm의 실리카 분말이 첨가된 임시치아용 레진은 점도 598.9 cP, 굴곡강도 191.2 MPa, 출력 정확도 ± 30 μm의 물성을 보여 굴곡강도가 크게 향상되었다.
In this study, a temporary crown resin was fabricated using silica powder surface-treated with methyl methacrylate (MMA), and temporary crown was printed using a LCD-type 3D printer to investigate the effects of the silica powder on the physical properties of the temporary crown, such as flexural strength and printing accuracy. For the fabrication of the temporary crown resin, urethane dimethacrylate (UDMA) was used as an acrylic oligomer, and trimethylolpropane trimethacrylate (TMPTMA) was used as an acrylic monomer. Also, penylbis(2,4,6-trimethylbenzoyl) phosphine oxide (BAPO) was used as the photoinitiator. MMA-treated silica powders with particle sizes of 1 μm and 3 μm were used. The temporary crown resin prepared without MMA-treated silica powder exhibited a viscosity of 358.3 cP, a flexural strength of 118.6 MPa, and a printing accuracy of ±25 μm. In contrast, the resin containing 1 μm MMA-treated silica powder showed a viscosity of 598.9 cP, a flexural strength of 191.2 MPa, and a printing accuracy of ±30 μm, showing a significant improvement in flexural strength.
References
2. Hata, K., Ikeda, H., Nagamatsu, Y., Masaki, C., Hosokawa, R. and Shimizu, H., “Dental Poly(methyl methacrylate)-Based Resin Containing a Nanoporous Silica Filler,” J. Funct. Biomater., 13, 32(2022).
3. Nulty, A. and Freeman, S., “A Literature Review of Current 3D Printing Materials in Dentistry. International Dentistry – Afri- can Edition,” 12(2), 6-15(2022).
4. Shen, C., Oh, W. S. and Williams, J. R., “Effect of Silica Filler Content on Mechanical Properties of Dental Composites,” Journal of Dentistry, 74, 53-60(2018).
5. Park, S. M., Lee, J. H. and Jeong, S. H., “Effects of Post-Pro- cessing Techniques on Mechanical Properties of 3D-Printed Den- tal Resins,” Dental Materials Journal, 39(4), 665-672(2020).
6. Kim, H. J., Lee, S. Y. and Kim, J. H., “Influence of Cleaning Protocols on the Surface Roughness and Mechanical Properties of 3D-Printed Dental Resins,” Journal of Prosthodontic Research, 66(3), 350-359(2022).
7. Ahn, J., Heo, J. and Choi, J., “A Study on the Wear Resistance of Provisional Restorative Resins According to Manufacturing Method,” Journal of Korean Academy of Prosthodontics, 57(2), 110-117(2019).
8. Kim, M. S., Kim, W. G., and Kang, W., “Evaluation of the Accuracy of Provisional Restorative Resins Fabricated Using Dental 3D Printers,” J. Korean Soc. Dent. Hyg., 19(6), 1089-1097(2019).
9. Cho, K., Lee, Y., Jang, H., Ha, Y. and Lee, S. H., “Development of High-Performance, Low-Cost 3D Printer Using LCD and UV-LED,” Journal of the Korean Society for Precision Engi- neering, 32(10), 917-923(2015).
10. Roohani, I., Entezari, A. and Zreiqat, H., “Liquid Crystal Dis- play Technique (LCD) for High Resolution 3D Printing of Triply Periodic Minimal Surface Lattices Bioceramics,” Additive Man- ufacturing, 74, 103720(2023).
11. Kim, H. B. and Choi, J. W., “Evaluation of Flexural Strength of 3D Printing Resin According to Post-Curing Equipment and Time,” Journal of the Korean Society of Industry Convergence, 26(4), 629-637(2023).
12. ISO 10477:2020 Dentistry - Polymer-Based Crown and Venner- ing Materials, Geneva (2020).
13. Moon, W., Kim, S., Lim, B. S., Park, Y. S., Kim, R. J. Y. and Chung, S. H., “Dimensional Accuracy Evaluation of Temporary Dental Restorations with Different 3D Printing Systems,” Materials, 14, 1487(2021).
14. Kim, T. H. and Song, K. C.,“Effect of Photo-Initiation Polymer- ization and Thermal-Initiation Polymerization on the Reduction of Glistening in Hydrophobic Acrylic Intraocular Lens Materi- als,” Macromol. Chem. Phys., 226(4), e00063(2025).
15. Vyas, A., Garg, V., Ghosh, S. B. and Bandyopadhyay-Ghosh S., “Photopolymerizable Resin-Based 3D Printed Biomedical Compos- ites: Factors Affecting Resin Viscosity,” Materials Today: Pro- ceedings, 62(3), 1435-1439(2022).
16. Scherer, M., Al-Haj Husain, N., Barmak, A. B., Kois, J. C., Ozcan, M. and Revilla-León, M., “Influence of the Layer Thickness on the Flexural Strength of Aged and Nonaged Additively Manu- factured Interim Dental Material,” J. Prosthodont, 32(S1), 68-73 (2023).
