IADR Abstract Archives
The effect of resin cements and titanium base on the transparency of zirconia core material
Objectives: The purpose of this study was to evaluate the effect of different color of resin cements and zirconia cores on the transparency of the restoration that simulates the implant supported fixed prosthesis by using titanium base on the bottom.
Methods: Zirconia core plates (Zr-Zahn) (10mm in width, 5mm in length and 0.5mm in height) were prepared in A2 shades(n=11). Resin cement plates (3MESPE)(10mm in width, 5 mm in length and 0.4 mm in height) were prepared in A2, A1, TR shades(n=11). The initial color measurements and transparency(TP) were measured on zirconia core plates and resin cements plates using a spectrometer. Then the resin cement plates were placed below the zirconia core plates and second measurements were done. The final measurements were done after placing the titanium discs (5mm in diameter and 3mm in height) in the bottom. The data were analyzed with two way analysis of variance and Tukey’s honestly significant differences tests (α=.05).
Results: The highest TP values were recorded for A1 colored resin specimens, the lowest for zirconia core plates in the first measurement (p<0.05). The highest TP value was recorded for A1 colored resin cement with zirconia core plates and the lowest for A2 and TR with zirconia core plates after second measurements (p<0.05). The addition of titanium decreased the TP of the zirconia core plate and resin cement combination (p<0.05). There were no statistically significant differences in TP values among the different colored resin cements when titanium was added as base material (p>0.05).
Conclusions: The resin cement and the presence of titanium and the zirconia are important factors that determine the final shade of zirconia cores in implant supported fixed prosthesis.
Methods: Zirconia core plates (Zr-Zahn) (10mm in width, 5mm in length and 0.5mm in height) were prepared in A2 shades(n=11). Resin cement plates (3MESPE)(10mm in width, 5 mm in length and 0.4 mm in height) were prepared in A2, A1, TR shades(n=11). The initial color measurements and transparency(TP) were measured on zirconia core plates and resin cements plates using a spectrometer. Then the resin cement plates were placed below the zirconia core plates and second measurements were done. The final measurements were done after placing the titanium discs (5mm in diameter and 3mm in height) in the bottom. The data were analyzed with two way analysis of variance and Tukey’s honestly significant differences tests (α=.05).
Results: The highest TP values were recorded for A1 colored resin specimens, the lowest for zirconia core plates in the first measurement (p<0.05). The highest TP value was recorded for A1 colored resin cement with zirconia core plates and the lowest for A2 and TR with zirconia core plates after second measurements (p<0.05). The addition of titanium decreased the TP of the zirconia core plate and resin cement combination (p<0.05). There were no statistically significant differences in TP values among the different colored resin cements when titanium was added as base material (p>0.05).
Conclusions: The resin cement and the presence of titanium and the zirconia are important factors that determine the final shade of zirconia cores in implant supported fixed prosthesis.