Author:
Arora Ojasvini,Ahmed Nabeel,Siurkel Yuliia,Ronsivalle Vincenzo,Cicciù Marco,Minervini Giuseppe
Abstract
Abstract
Background
In dentistry, there is a growing preference for computer-aided design and computer-aided manufacturing (CAD/CAM) systems over traditional laboratory procedures. However, there is not much literature comparing various CAD/CAM materials. Thus, this study aimed to assess and compare the color stability and hardness of gingival and tooth colored milled and 3D-printed acrylic resins.
Materials and methods
Four types of CAD/CAM materials were prepared: 3D-printed pink shade (PP), milled polymenthymethacrylate (PMMA) pink shade (MP), 3D-printed tooth shade (PT) and milled PMMA tooth shade (MT) (n = 6). For hardness, disc shaped samples of 15 mm × 2 mm and for color stability, bar shaped samples of 65mmx10mmx2.5 mm were prepared and polished. Vickers hardness test was performed in a microhardness tester. Color stability test was done by immersing in coffee solution and coca cola for 7 days. Day 0 and day 7 measurements were recorded using a digital spectrophotometer and the change in color was calculated. For statistical analysis, one-way ANOVA and Tukey’s post hoc tests were done.
Results
For color stability, milled PMMA was superior to 3D-printed resin samples. Milled pink and tooth shade samples had similar color stability, whereas 3D-printed tooth shade samples were more color stable as compared to pink shade 3D-printed samples. For hardness, milled tooth shade PMMA was the most superior one, followed by 3D-printed tooth shade, whereas pink shade milled PMMA and 3D-printed resin samples had similar hardness values and were inferior to the tooth shade CAD/CAM materials.
Conclusion
Color stability of milled PMMA is superior to that of 3D-printed resins. Hardness of tooth shade milled and 3D-printed resins is more than that of pink shade milled and 3D-printed resins.
Publisher
Springer Science and Business Media LLC
Reference39 articles.
1. Alifui-Segbaya F, Bowman J, White AR, George R, Fidan I. Characterization of the double bond conversion of acrylic resins for 3D printing of dental prostheses. Compend Contin Educ Dent. 2019;40(10):e7–e11.
2. Ezhilarasan D, Apoorva VS, Ashok Vardhan N. Syzygium cumini extract induced reactive oxygen species-mediated apoptosis in human oral squamous carcinoma cells. J Oral Pathol Med. 2019;48(2):115–21. https://doi.org/10.1111/jop.12806.
3. Gheorghe DN, Bennardo F, Popescu DM, Nicolae FM, Ionele CM, Boldeanu MV, Camen A, Rogoveanu I, Surlin P. Oral and Periodontal Implications of Hepatitis Type B and D. Current State of Knowledge and Future Perspectives. J Pers Med. 2022;12(10). https://doi.org/10.3390/jpm12101580.
4. Giudice A, Bennardo F, Antonelli A, Barone S, Fortunato L. COVID 19 is a new challenge for dental practitioners: Advice on patients’ management from prevention of cross infections to telemedicine. Open Dent J. 2020;14(1):298–304.
5. Vozzo LM, et al. The success and complications of complete-arch implant-supported fixed monolithic zirconia restorations: a systematic review. Prosthesis. 2023;5(2):425–36. https://doi.org/10.3390/prosthesis5020029.