IADR Abstract Archives
Comparison of Compressive Strength and Fluoride Release of GIC Restoratives
Objectives:
Next generation bulk fill glass hybrid long term restorative system EQUIA Forte HT System (fill and coat) was introduced in 2019.
The unique feature of GICs are increasing strength after setting and fluoride release.
The aim of this study was to evaluate the compressive strength and fluoride release among 5 GICs.
Methods: EQUIA Forte HT fill (EFH, GC), EQUIA Forte fill(EF, GC), Ketac Universal(KU, 3M ESPE), Riva Self cure HV(RS, SDI) and Chemifil Rock(CR, Dentsply) were evaluated in this study. All the capsules were mixed by Capsule mixer(CMII, GC) following the manufacturer’s instructions. Compressive strength: Compressive strength were measured in accordance with ISO9917-1:2017 at the time period of 30min, 24h and 1week after from start of mixing.
Fluoride release: Samples were filled in an acrylic mold(φ7mm×2mm).Two molds were immersed in distilled water (37degrees cersius) for each product. Fluoride ion was measured by Fluoride selective electrode at the time period of 24h, 7days, 28days and 84days. (Tukey-Kramer p<0.05)
Results: Compressive strength [MPa]
30min 24h 7days
EFH 127.9 (5.8) 232.8 (16.0) 252.0 (29.6)
EF 115.3 (7.3) 216.3 (9.5) 232.2 (36.8)
KU 85.1 (7.3) 142.2 (21.7) 154.9 (18.8)
RS 119.7 (21.1) 189.1 (18.9) 201.3 (13.2)
CR 103.3 (8.9) 172.8 (5.4) 188.3 (8.4)
Fluoride release [μg/cm2]
24h 7days 28days 84days
EFH 168.8 388.6 658.3 943.1
EF 127.0 312.0 542.2 777.9
KU 42.9 125.8 262.3 434.4
RS 12.4 52.8 137.4 251.3
CR 45.2 134.7 262.8 352.2
All the Sample showed increase in compressive strength depending on time. Although there is no significant difference between EFH and EF. EFH showed highest strength at 30min,24h and 7days. EFH showed highest amount of Fluoride release.
Conclusions: It is expected that EFH is suitable material for long term posterior restoration.
Next generation bulk fill glass hybrid long term restorative system EQUIA Forte HT System (fill and coat) was introduced in 2019.
The unique feature of GICs are increasing strength after setting and fluoride release.
The aim of this study was to evaluate the compressive strength and fluoride release among 5 GICs.
Methods: EQUIA Forte HT fill (EFH, GC), EQUIA Forte fill(EF, GC), Ketac Universal(KU, 3M ESPE), Riva Self cure HV(RS, SDI) and Chemifil Rock(CR, Dentsply) were evaluated in this study. All the capsules were mixed by Capsule mixer(CMII, GC) following the manufacturer’s instructions. Compressive strength: Compressive strength were measured in accordance with ISO9917-1:2017 at the time period of 30min, 24h and 1week after from start of mixing.
Fluoride release: Samples were filled in an acrylic mold(φ7mm×2mm).Two molds were immersed in distilled water (37degrees cersius) for each product. Fluoride ion was measured by Fluoride selective electrode at the time period of 24h, 7days, 28days and 84days. (Tukey-Kramer p<0.05)
Results: Compressive strength [MPa]
30min 24h 7days
EFH 127.9 (5.8) 232.8 (16.0) 252.0 (29.6)
EF 115.3 (7.3) 216.3 (9.5) 232.2 (36.8)
KU 85.1 (7.3) 142.2 (21.7) 154.9 (18.8)
RS 119.7 (21.1) 189.1 (18.9) 201.3 (13.2)
CR 103.3 (8.9) 172.8 (5.4) 188.3 (8.4)
Fluoride release [μg/cm2]
24h 7days 28days 84days
EFH 168.8 388.6 658.3 943.1
EF 127.0 312.0 542.2 777.9
KU 42.9 125.8 262.3 434.4
RS 12.4 52.8 137.4 251.3
CR 45.2 134.7 262.8 352.2
All the Sample showed increase in compressive strength depending on time. Although there is no significant difference between EFH and EF. EFH showed highest strength at 30min,24h and 7days. EFH showed highest amount of Fluoride release.
Conclusions: It is expected that EFH is suitable material for long term posterior restoration.