Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
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Behlau, A; Behlau, I; Payer, M; Leitinger, G; Hanscho, K; Kqiku, L; Glockner, K.
Effects of Finishing on Surface Roughness of Four Different Glass-Ionomer Cements and One Alkasite: In Vitro Investigation over Time Using Aging Simulation.
J Funct Biomater. 2024; 15(11):
Doi: 10.3390/jfb15110325
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- Führende Autor*innen der Med Uni Graz
- Behlau Alexander
- Co-Autor*innen der Med Uni Graz
- Glockner Karl
- Hanscho Katharina
- Kqiku-Biblekaj Lumnije
- Leitinger Gerd
- Payer Michael
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- Abstract:
- In 2017, Europe implemented a ban on amalgam restorations for children aged <15 years and for pregnant/breastfeeding women, highlighting the need for alternative filling materials exhibiting less surface roughness and enhanced longevity. This in vitro study aimed to examine the surface roughness variations of five amalgam-replacement materials across three time points and using six finishing methods: (1) no finishing (control), (2) Arkansas burs, (3) diamond burs, (4) tungsten carbide burs, (5) SofLex discs in descending grit size, and (6) coarse SofLex discs combined with silicone polishing. We prepared 960 samples. Each material group, i.e., Cention Forte (CNF), DeltaFil (DLF), Ketac Universal (KTU), IonoStar Molar (ISM), and Equia Forte HT (EQF), comprised 60 samples (n = 10 per finishing method) created using standardized 3D-printed metal molds. Surface roughness (Sa) was measured immediately after finishing, after 30 days of storage in distilled water, and after thermocycling (5000 cycles) using a non-contact profilometer. The results indicate that conventional and hybrid glass-ionomer cements have smoother surfaces than high-viscosity GICs. The DLF and CNF groups exhibited stable outcomes. These findings underscore the importance of selecting appropriate finishing methods based on the restorative material to minimize surface roughness.
- Find related publications in this database (Keywords)
- amalgam-replacement materials
- optical surface measurement
- European amalgam ban
- non-contact profilometer
- surface roughness