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Dental Tribune Middle East & Africa Edition | February 2015 11AESTHETICS < Page 10 Fig. 20 Fig. 23 Fig. 24 Fig. 25 Fig. 21 Fig. 22 Fig. 10 Fig. 17 Fig. 9 have glass based veneers (SiO2) and Zirconia based Full Con- tour bridges in the same case, the scenario is different, and our working options are minimized to have mostly the staining tech- nique working protocol to con- duct simultaneously on both the veneers and the bridges. In order to guarantee that both materials react to light as close as possible to themselves, so shade dimensions (Hue, Value, Chroma) in both materials can almost match. (Fig. 17) That scenario is valid mostly when the required final shade is one of the bleach shades, then the ratio of translucent enamel is pretty much relevant to the pa- tient desire, but majority of pa- tient who ask for a bleach shade are concerned about showing a high brightness of their smiles rather than showing a natural looking translucency on the in- cisal third. Staining technique will prevent us from layering feldethpatic ceramic (enamel) on top, which leaves the glass LiS2 exposed, that allows more light and brightness to radiate from the pressed material, at the same time that would lessen the es- thetic look of a natural tooth, but the question again is; what does our patient need? And what cat- egory of patient he/she is? He/ she wants to bring teeth back to their natural look? Or he/ she wants bleach teeth with no translucency graduation. (Fig. 18, 19: note the matching, after final cementation, between the IPS e.max veneers and Zenostar bridges). Cementation and follow up: E.max veneers were finally ce- mented using VarioLink II (Ivo- clar Vivadent resin cement-ad- hesive cementation technique), then Zenostar posterior zirconia bridges were followed using the same VarioLink II base mixed with catalyst, after the cementa- tion surface had been blasted in the lab with AL2O3. Finishing and polishing rubber heads (OptraFine Assortment, Ivoclar Vivadent) were used to remove excess residual cement and to eliminate all occlusal in- terferences. During the follow up appointment, a final checkup and modifications were made to eliminate all occlusal interfer- ences. (Fig. 20 – 25) Conclusion After that outstanding match I had between the IPS e.max press & the Zenostar Zr. I realized that finally found my robust restorative material for long span bridges in the poste- rior region that I can combine to the IPS e.max material without any risk of hesitation, thanks to the innovative TFZ Zenostar. Fig. 19 Fig. 18 Contact Information Aiham Farah, CDT Technical Training Consultant Near East & Orient IvoclarVivadent Email: aiham.farah@ivoclarvivadent.com Dr. Duval Aloush, DSD Dental Practice Dr.duval@dr.com