The color stability of resin cements plays a key role in the achievement of esthetically-pleasant restorations. Resin luting materials can be mainly divided into two main classes: adhesive (relying on previous application of adhesive systems) or self-adhesive (also known as one-step cements). The different chemical compositions determine their physio-mechanical characteristics which, in turns, influence their color stability. To evaluate the color variations of different dual-cured resin cements after water aging, 80 disc-shaped specimens (15 mm in diameter and 1.2 mm thick) were obtained from the following resin cements (n = 10): (1) Maxcem Elite Universal, MCU (Kerr); (2) RelyX Universal, RXU (3M); (3) Calibra Ceram, CAL (Dentsply); (4) Multilink, MUL (Ivoclar-Vivadent); (5) Panavia V5, PAN (Kuraray); (6) Calibra Universal, CUN (Dentsply); (7) SpeedCEM Plus, SCP (Ivoclar); and (8) Panavia SA, PSA (Kuraray). After light-polymerization, the specimens were measured with a spectrophotometer and CIELab* values were recorded. The specimens were then placed in a digitally controlled thermostatic water bath at 60 degrees for 30 days and afterwards the color measurements were repeated. Color differences were calculated for each specimen before and after water-aging procedures with Delta Eab formula and the data were statistically analyzed (p < 0.05). The type of cement statistically influenced the Delta Eab (p < 0.05), with MCU showing the lowest color variations (4.3 +/- 0.7) whereas RXU and PSA the highest (16.9 +/- 1.6 and 16.8 +/- 1.2, respectively). No differences were observed between CAL, CUN and SCP (p = 0.05). Color stability is related to the chemical composition of the resinous luting materials, thus material dependent.

Color Stability of Resin Cements after Water Aging

Scotti, Nicola;
2023-01-01

Abstract

The color stability of resin cements plays a key role in the achievement of esthetically-pleasant restorations. Resin luting materials can be mainly divided into two main classes: adhesive (relying on previous application of adhesive systems) or self-adhesive (also known as one-step cements). The different chemical compositions determine their physio-mechanical characteristics which, in turns, influence their color stability. To evaluate the color variations of different dual-cured resin cements after water aging, 80 disc-shaped specimens (15 mm in diameter and 1.2 mm thick) were obtained from the following resin cements (n = 10): (1) Maxcem Elite Universal, MCU (Kerr); (2) RelyX Universal, RXU (3M); (3) Calibra Ceram, CAL (Dentsply); (4) Multilink, MUL (Ivoclar-Vivadent); (5) Panavia V5, PAN (Kuraray); (6) Calibra Universal, CUN (Dentsply); (7) SpeedCEM Plus, SCP (Ivoclar); and (8) Panavia SA, PSA (Kuraray). After light-polymerization, the specimens were measured with a spectrophotometer and CIELab* values were recorded. The specimens were then placed in a digitally controlled thermostatic water bath at 60 degrees for 30 days and afterwards the color measurements were repeated. Color differences were calculated for each specimen before and after water-aging procedures with Delta Eab formula and the data were statistically analyzed (p < 0.05). The type of cement statistically influenced the Delta Eab (p < 0.05), with MCU showing the lowest color variations (4.3 +/- 0.7) whereas RXU and PSA the highest (16.9 +/- 1.6 and 16.8 +/- 1.2, respectively). No differences were observed between CAL, CUN and SCP (p = 0.05). Color stability is related to the chemical composition of the resinous luting materials, thus material dependent.
2023
15
655
1
14
color stability; dual-cure; resin cement; self-adhesive cement; water aging
Mazzitelli, Claudia; Paolone, Gaetano; Sabbagh, Joseph; Scotti, Nicola; Vichi, Alessandro
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1943232
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