IADR Abstract Archives
Evaluation of Mechanical Properties of New GI-restorative (EQUIA Forte HT)
Objectives: Since EQUIA Forte was released for clinical use, we indicated the developed technology “Glass hybrid theory”. We have achieved development of more advanced glass hybrid theory. In this study, we evaluated physical property features of new GI-restorative EQUIA Forte HT.
Methods: EQUIA Fil(FEX), EQUIA Forte Fil(EQF) and EQUIA Forte Fil HT Fil(EHT) were tested.
Flexural strength: According to ISO 9917-2-2018, specimens were prepared (n=5), and stored in chamber (1h, 37oC, RH95%). These specimens were immersed into water (24hrs, 37oC). Flexural strength was evaluated by 3-point bending machine with cross head speed of 1mm/min.
Time for extruding: Time was measured start of mixing. 45 seconds after, cement was extruded. The amount of extruded cement was evaluated (23oC, RH50%, n=3).
Total translucency: These cements were filled into metal ring mold (15mm in diameter, 0.5mm in thickness), and stored in chamber (1h, 37oC, RH95percent, n=3). Total translucency was evaluated by haze meter.
Data among tests were analyzed statically by one-way ANOVA turkey’s (p<0.05).
Results: These results showed that EQUIA Forte HT(EHT) has the highest mechanical strength, the largest amount of extruded cement which means the longest extruding time, and higher translucency than current EQUIA series.
Conclusions: Due to advanced glass hybrid theory, EQUIA Forte HT Fil improves these mechanical properties. It suggests that EHT is more durable, user friendly, and aesthetic material.
EQUIA Forte HT can be expected to work for suitable material of clinical situations.
Methods: EQUIA Fil(FEX), EQUIA Forte Fil(EQF) and EQUIA Forte Fil HT Fil(EHT) were tested.
Flexural strength: According to ISO 9917-2-2018, specimens were prepared (n=5), and stored in chamber (1h, 37oC, RH95%). These specimens were immersed into water (24hrs, 37oC). Flexural strength was evaluated by 3-point bending machine with cross head speed of 1mm/min.
Time for extruding: Time was measured start of mixing. 45 seconds after, cement was extruded. The amount of extruded cement was evaluated (23oC, RH50%, n=3).
Total translucency: These cements were filled into metal ring mold (15mm in diameter, 0.5mm in thickness), and stored in chamber (1h, 37oC, RH95percent, n=3). Total translucency was evaluated by haze meter.
Data among tests were analyzed statically by one-way ANOVA turkey’s (p<0.05).
Results: These results showed that EQUIA Forte HT(EHT) has the highest mechanical strength, the largest amount of extruded cement which means the longest extruding time, and higher translucency than current EQUIA series.
Conclusions: Due to advanced glass hybrid theory, EQUIA Forte HT Fil improves these mechanical properties. It suggests that EHT is more durable, user friendly, and aesthetic material.
EQUIA Forte HT can be expected to work for suitable material of clinical situations.