IADR Abstract Archives
Aging-Dependent Changes in Translucency of Universal Shade Resin Composites
Objectives: To evaluate the influence of artificial accelerated aging (AAA) on translucency parameter (TP) of universal shade resin composites.
Methods: Single-shade, disc-shaped specimens (D=10mm, 2-mm thick, n=5) of six universal shade resin composites: Ultradent Transcend (UT; Ultradent, South Jordan, UT), Omnichroma (OM; Tokuyama, Encinitas, CA), Filtek Universal (FU; 3M, St. Paul, MN), Majesty ES-2 (KM; Kuraray America, New York, NY), Admira Fusion Universal (VA; VOCO, Cuxhaven, Germany) and Venus Diamond One Shade (VD; Kulzer, South Bend, IN), were polymerized using a VALO curing light (Ultradent, South Jordan, UT) was through a Mylar strip and 1mm glass slide for 40 seconds. Specimens were polished using PoGO disk-shaped polishers (PoGo, Dentsply, York, PA) for 40 seconds. A spectrophotometer (X-Rite Ci7600 Series, Xrite, Grand Rapids, MI, USA) was used for color measurements at baseline (T0), and after AAA (SUNTEST XXL, Atlas Material Testing Technology, Chicago, IL): exposure to controlled irradiance of 150 kJ/m2 (T1) and 300 kJ/m2 (T2). CIEDE2000 TP differences (ΔTP00) were calculated. Means and standard deviations were determined, and data was analyzed by One-way ANOVA. Tukey's and Tamhane’s tests were used for post hoc comparisons.
Results: Mean CIEDE2000 TP00 (s.d.), at T0, T1 and T2 are shown in the table 1. A significant material and exposure-dependent difference in TP00 was recorded at each evaluated time interval T0, T1 and T2 (p<0.001, power 1.0). VD had the highest TP00, followed by OM, UT, KM, VA, and FU.
Conclusions: After aging, the differences in TP of universal shade resin composites were exposure and material-dependent. All materials exhibited a lower TP after AAA (in intervals T1 and T2).
Methods: Single-shade, disc-shaped specimens (D=10mm, 2-mm thick, n=5) of six universal shade resin composites: Ultradent Transcend (UT; Ultradent, South Jordan, UT), Omnichroma (OM; Tokuyama, Encinitas, CA), Filtek Universal (FU; 3M, St. Paul, MN), Majesty ES-2 (KM; Kuraray America, New York, NY), Admira Fusion Universal (VA; VOCO, Cuxhaven, Germany) and Venus Diamond One Shade (VD; Kulzer, South Bend, IN), were polymerized using a VALO curing light (Ultradent, South Jordan, UT) was through a Mylar strip and 1mm glass slide for 40 seconds. Specimens were polished using PoGO disk-shaped polishers (PoGo, Dentsply, York, PA) for 40 seconds. A spectrophotometer (X-Rite Ci7600 Series, Xrite, Grand Rapids, MI, USA) was used for color measurements at baseline (T0), and after AAA (SUNTEST XXL, Atlas Material Testing Technology, Chicago, IL): exposure to controlled irradiance of 150 kJ/m2 (T1) and 300 kJ/m2 (T2). CIEDE2000 TP differences (ΔTP00) were calculated. Means and standard deviations were determined, and data was analyzed by One-way ANOVA. Tukey's and Tamhane’s tests were used for post hoc comparisons.
Results: Mean CIEDE2000 TP00 (s.d.), at T0, T1 and T2 are shown in the table 1. A significant material and exposure-dependent difference in TP00 was recorded at each evaluated time interval T0, T1 and T2 (p<0.001, power 1.0). VD had the highest TP00, followed by OM, UT, KM, VA, and FU.
Conclusions: After aging, the differences in TP of universal shade resin composites were exposure and material-dependent. All materials exhibited a lower TP after AAA (in intervals T1 and T2).