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Conclusion As above Zirconia can not be e ectively dissolved by hydro uoric acid alone. So a combination of acid etching with HF/NO3 and ultrasonic is a more advanced bond of resin based cements. is method also vastly enhances bond strength on non ideal preparations. Ie; short or non parallel preparations. Searching for new methods of construction crown and bridge prosthesis IN ZIRCONIA has driven the search for alternative materials, with higher aesthetic features, bio-compatibility and mechanical performance. What seemed impossible to achieve a few years ago, nowadays, are part of the every day work routine in digital dental laboratories. is technique was rst developed and implemented by our team; however, many practitioners have since adopted it successfully. Our experience demonstrated that the combined characteristics of Zircos -E and uid ceramic sits at the forefront of constructing perfect prosthetics! rough this technique we are now able to improve aesthetics, colour and avoiding chipping through improved bond strength. Most of all this will improve cementation as the future is most certainly Zirconia restorations.Zircos-E is an acid etching liquid recommended for this technique. Along with Dr Goran Prokic of the Gold Coast, Australia and I have incorporated this protocol for the last 2 years and we nd it to be highly successful. anks to Bruno Czylewicz / D.T Renata Loren for assistance / with the clinical case. u This is a product that I use and am the official supplier of in Australia. This is available at Da Vinci Dental Art Supplies. For order: whatsapp +6147873134 References 1 Casucci A, Osorio E, Osorio R, Monticelli F, Toledano M, Mazzitelli C, Ferrari M. In uence of di erent surface treatments on surface zirconia frameworks. J Dent 2009; 37; 891-897. 2 Casucci A, Monticelli F, Goracci C, Mazzitelli C, Cantoro A, Papacchini F, Ferrari M. E ect of surface pre-treatments on the zirconia ceramic-resin cement microtensile bond strength. Dent mater 2011; 27; 1024-1030. 3 Xie H, Chen C, Dai W, Chen G, Zhang F. In vitro short-term bonding performance of zirconia treated with hot acid etching and primer conditioning. Dent Mater J 2013; 32; 928-93 ABOUT THE AUTHORS: MDTAngelo Di Franco was born in Italy and qualified as a Dental Technician in 1988 and retrained in Australia in 1998. During this time he has worked for many leading companies in the Italian dental profession demonstrating new products and techniques and at times traveling the world to share his knowledge. Angelo has also had many articles published in international dental magazines. In 2017 he decided to move to Australia where he had already worked 20 years prior as a Dental Technician in a well-known Dental Laboratory. He is currently owner of Da Vinci dental art, on the Gold Coast – Qld. Here, Angelo`s position is on the study of aesthetic and innovative materials for immediate loading, training and manufacturing high end dental appliances. Angelo is also a demonstrator for Da Vinci dental art supplies in Australia for the new generation dental products, which are available to purchase from his website www. davincidentalart.com.au Mobile +611 (0)478731344 This is now Angelo’s 6th publication on innovative new materials. Dr Goran Prokic has been a part of the MGA Dental team since its establishment in 2003. As Michaels son, and student of dental studies, it’s safe to say Goran is embedded in the industry. Before becoming a dentist, Dr Goran Prokic was working as an Oral Health Therapist for a number of years. He has vast experience with children. He went on to completed his Graduate Diploma in Dentistry from Gri˜ith University. Dr Goran Prokic enjoys all aspects of dentistry. He continues to develop his knowledge by completing extensive training course’s in orthodontics through Progressive Orthodontic Seminars.

Since this technique of etching on zirconia and uid porcelain (paste) I have not encountered any problem of porcelain chipping. I hope you enjoyed this presentation of this new process. It is possible to etch the crowns after glazing, just cover the outer contour with wax and add some drops inside, waiting 30 mins, rinse with water and steaming it. I started using

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