| Autor: |
Perić, Tamara, Vulović, Jelena, Nicholson, John, Beloica, Miloš, Kuzmanović Pficer, Jovana, Račić, Aleksandar, Petrović, Bojan, Miletić, Ivana, Marković, Dejan |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Popis: |
Objectives Although new formulations of glass- ionomer (GI) restorative materials have been introduced, little is known on their performances in primary dentition. The aim of the study was to evaluate the microtensile bond strength (µTBS) of a glass-hybrid (GH), high- viscous (HV-) and resin-modified (RM-) GI restoratives to sound (SD) and caries-affected (CAD) primary dentine. Methods Occlusal cavities were prepared in 60 primary molars and randomly divided into two groups: SD and CAD. Teeth (n=6) were restored with a GH (Equia Forte HT, GC Int- EF), two HV-GI (Equia Fill, GC Int- E ; Ketac Molar, 3M ESPE- KM), and two RM-GI (Fuji II LC, GC Int- II, Photac Fill, 3M ESPE- PF) materials. Samples were immersed in artificial saliva at 37°C for 7 days, and subsequently exposed to the thermal aging (10.000×). Twelve microspecimens per group were formed and allowed to age in artificial saliva at 37°C for 7 days. µTBS was tested at loading rate of 0.5 mm/min until failure. Mode of failure was analyzed using an optical digital microscope (magnification 300×). Results The overall bond strength was higher for SD than for CAD (p0.05, chi-square test). Conclusions Novel restorative formulations are likely to provide better bonding properties to both sound and caries-affected primary dentine compared to the previous generations of GI materials. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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