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CADCAM international magazine of digital dentistry

10 I I special _ digital smile design and/or composite system he or she is using. In this particular clinical case, the ceramic system used was IPS e.max Press and the composite system was IPS Empress Direct (both Ivoclar Vivadent) because of its simple layering concept, its natural-looking shadesandlong-lastinggloss.Thecorrespondences between the shades of both systems make them easier to combine. Once the treatment plan has been accepted by the patient, the treatment begins with preparation and demarcation in order to be as conservative aspossible(Fig.16).Figure17showsthedetailofthe hypomineralised areas of the mandibular lateral incisors. The areas were excavated with a red- coloured bur (Komet Dental) and etched with phos- phoric acid. ExciTE F (Ivoclar Vivadent) was used as a bonding agent, and IPS Empress Direct Dentin A1 and Enamel A1 were placed using a novel instru- ment called OptraSculpt Pad (Ivoclar Vivadent). The maxillary teeth were prepared and impres- sions taken. Figure 20 shows the six veneers fabri- cated by master dental technician Victor Romero (Santiago, Chile). Then they were tried-in with a specially designed glycerine-based paste, com - ponents of the Variolink Esthetic cementation kit (Ivoclar Vivadent). Figure 21 shows how dramatic thechangeinvaluecanbewiththistypeofcement. Thisprocedureisespeciallyhelpfulwhenoneortwo veneersareseated,andthevalueneedstobeslightly corrected in order to match them to the adjacent teeth. The veneers were then bonded and the final resultcanbeseeninFigure22,wherethepreopera- tive situation is shown against the similar results achieved with the digital mock-up compared with thefinaloutcome.Figures23and24showtheinte- gration of the six maxillary ceramic veneers and the twodirectcompositerestorationsperformedonthe mandibular lateral incisors at the three-month fol- low-up. All this work was integrated from the facial perspective, as seen in Figure 25. The satisfied and spontaneous patient can be observed in Figure 26._ CAD/CAM 4_2014 Dr Eduardo Mahn,DDS,DMD,PhD,is a lecturer at the Universidad de losAndes in Santiago,Chile. Dr Gustavo Mahn,DDS,is a lecturer at the university FinisTerrae in Santiago,Chile. Dr Carlos Cáceres,DDS,is a lecturer at Universidad del Desarrollo in Concepción,Chile. Dr Luis Bustos,DDS,is a lecturer at Universidad del Desarrollo in Concepción,Chile. Dr Christian Coachman,DMD,MDT, is in private practice in São Paulo in Brazil. _contact:Dr Eduardo Mahn,emahn@miuandes.cl CAD/CAM_about the authors Fig. 26Fig. 25 Fig. 24Fig. 23 CAD0414_06-10_Mahn 14.11.14 13:34 Seite 5 CAD0414_06-10_Mahn 14.11.1413:34 Seite 5

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