IADR Abstract Archives
Resin-modified Glass-ionomer Cements (RMGICs): A Comparative Study
Objectives: The purpose of this study was to compare the physical properties and features of an experimental RMGIC to three market-leading products.
Methods: RMGICs Riva CemTM experimental automix cement/SDI Limited (RC), FujiCEMTM 2/GC (FC), RelyXTM Luting Plus Automix/3M (RX) and NexusTM RMGI/Kerr (NR) were evaluated using automix technique.
Compressive strength test was adapted for RMGICs from ISO-9917-1:2017 Annex D method, flexural strength and modulus according to ISO 9917-2:2017 Annex C using an INSTRON#5566. Shear Bond Strength (SBS) was evaluated according to ISO/FDIS-29022:2012(E) using an INSTRON#5942.
Vickers Hardness was measured using a Buehler hardness tester (Model#1600-6306/load 300g) on samples prepared in same manner as compressive strength.
RMGICs were dispensed according to manufacturer’s instructions. Specimens were stored 60min in humidor (37°C) before demolding and immersed in deionised water at 37°C 24h before testing.
Mixing tip wastage was evaluated by weighing tip before/after dispensing.
Data was analysed using unpaired t-test.
Results: Results are reported in table.
Conclusions: Within this study, properties of RMGICs are shown to be dependent on mechanical tests performed and material brand tested. Riva Cem experimental automix presents less product waste and generally performs as well or better than market-leading cements when comparing the clinically relevant mechanical properties investigated in this study. This provides support for the use of Riva Cem experimental automix in clinical situations.
Methods: RMGICs Riva CemTM experimental automix cement/SDI Limited (RC), FujiCEMTM 2/GC (FC), RelyXTM Luting Plus Automix/3M (RX) and NexusTM RMGI/Kerr (NR) were evaluated using automix technique.
Compressive strength test was adapted for RMGICs from ISO-9917-1:2017 Annex D method, flexural strength and modulus according to ISO 9917-2:2017 Annex C using an INSTRON#5566. Shear Bond Strength (SBS) was evaluated according to ISO/FDIS-29022:2012(E) using an INSTRON#5942.
Vickers Hardness was measured using a Buehler hardness tester (Model#1600-6306/load 300g) on samples prepared in same manner as compressive strength.
RMGICs were dispensed according to manufacturer’s instructions. Specimens were stored 60min in humidor (37°C) before demolding and immersed in deionised water at 37°C 24h before testing.
Mixing tip wastage was evaluated by weighing tip before/after dispensing.
Data was analysed using unpaired t-test.
Results: Results are reported in table.
Conclusions: Within this study, properties of RMGICs are shown to be dependent on mechanical tests performed and material brand tested. Riva Cem experimental automix presents less product waste and generally performs as well or better than market-leading cements when comparing the clinically relevant mechanical properties investigated in this study. This provides support for the use of Riva Cem experimental automix in clinical situations.