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lab tribuneDental Tribune Middle East & Africa Edition | January-February 2015 1C > Page 4C By Aiham Farah, Syria T he challenge of this case. The way to think about combination cases, where you have glass ceramic veneers next to zirconium oxide bridges, is different than having only one kind of restorative material in a case. Lots of factors have to be Fig. 11 Fig. 12 Fig. 13 Fig. 14 The challenge of combining TFZ to e.max in one case taken into account, most impor- tant is the optical properties of both materials and the fact that they need to match (Not just from a dental technician point of view, but also from a dental point of view and the way he ad- just his/her preparation accord- ingly). It was difficult to find an equiva- lent to our chosen SiO2 material for the veneers (IPS e.max Press, in this case), with its outstanding esthetic and life like appearance, but going to Zirconium oxide option to restore the posterior bridges was necessary since the IPS e.max is indicated for a max- imum of 3 units bridges up to the Aiham Farah. CDT Technical Training Consultant Near East & Orient IvoclarVivadent Email: aiham.farah@ivoclarvivadent.com Contact Information For professionals by profession- als – SR Nexco goes one step fur- ther For professionals by professionals – SR Nexco goes one step further By Ivoclar Vivadent A new flask has been devel- oped in collaboration with expert users of the press technique. SR Nexco Flask is a new type of flaskwiththehelpofwhichlight- curing veneering composites can be pressed on dental frame- works. In order to effectively ad- dress the practical challenges of functionality, ergonomics and design, the flask has been devel- oped in close cooperation with industry professionals. The new flask offers the follow- ing important benefits: It allows composite materials to be ef- ficiently and quickly pressed to dental restorations, including long-span bridges. The results are highly accurate, showing hardly any difference between Note. Our clinical case exam- ple here is a part of a whole case history started in Dental Tribune > Dental Tribune MEA page 10-11 Dental Tribune IPS e.max® PRESS MULTI THE WORLD’S FIRST POLYCHROMATIC PRESS INGOT • Monolithic LS2 restorations showing a lifelike shade progression • Exceptional combination of strength, esthetics and efficiency • For crowns, veneers and hybrid abutment crowns • Coordinated with high-precision Programat press furnaces • Maximum cost effectiveness in the press technique • • • all ceramic all you need www.ivoclarvivadent.com Ivoclar Vivadent AG Bendererstrasse 2 | 9494 Schaan | Liechtenstein Tel.: +423 235 35 35 | Fax: +423 235 33 60 LIFELIKE ESTHETICS – EFFICIENTLY PRESSED second premolar region, and in our situation here our bridges go further to the molar area. Material Selection Judgment Before you choose where to outsource your Zirconia work, you have to make sure that the brand of Zirconia to be used will fulfill your requirements of translucency-opacity level, and the shade concept will easily match your IPS e.max veneers work in the front esthetic region. No method would enable you to make sure, better than milling different kind of Zirconia, and trying them all in, together with the IPS e.max veneers, to check the matching level yourself. In my case scenario here, to nar- row down my options I based on a study for 3M ESPE showing a comparison between several kind of high translucent zirco- nia. (Fig. 11) Showing that; Lava Plus (from 3M ESPE) & Zenostar Zr Trans- lucent Pure (from Wieland) are the top in their range when it comes to translucency levels. The advantage of Zenostar in our case situation over the Lava, was the important factor of the shading concept of Zenostar and how its coordinated with the IPS e.max press Ingot shade and col- oring concept. In terms of; MO (Medium Opac- ity) ingot from IPS e.max Press has a match in the Zenostar Zir- conia, which is also called MO (Medium Opacity). LT (Law Translucency) Ingots from IPS e.max Press have equivalent in the Zenostar Zir- conia which is also called (T= Translucent). Nothing left to do but to try the material on a dummy case and make sure of the match myself. (Fig. 12) Zenostar Pure & Light From the (T=Translucent) Zir- conia and according to the final shade chosen by our patient for her veneers & bridges restora- tions which is BL4 (according to Ivoclar Vivadent shade guide A-D), we had to choose between two Zr blanks from the bright colors (light & pure). Since the intensity and brightness of a color would change relatively with changing the thickness of the material, I decided to go for both colors, then we choose what matches our veneers bet- ter on the day of the try in. (Fig. 14) Tel.: +4232353535 | Fax: +4232353360