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30 I I industry report _ IPS Empress CAD Multi _Nobody will deny that aesthetics play a crucial role in the restoration of anterior teeth, irrespectiveofwhethertherestorationsareplaced in male or female patients. As the final outcome is dependent on the skills of the clinician, the aesthetic differences may be trem- endous even if state-of- the-art techniques and materials are utilised. For the anterior restorations in the case presented, I used IPS Empress CAD leucite glass-ceramic blocks. These blocks are offered in two different levels of translucency by the man- ufacturer. Additionally, a Multi block featuring multiple shades is available. As these blocks are industrially processed, restora- tions of consistent quality are achieved. The glass- ceramic material is easy to polish or reduce, which enables the milled restoration to be veneered sub- sequently. As a result, the final aesthetic outcome can be optimised in a simple fashion. I usually work with the polychromatic IPS Empress CAD Multi blocks, as they feature a true- to-nature gradation of shades combined with optimum levels of brightness and translucency. Consequently, they blend in seamlessly with the natural oral environment. In addition, they demonstrate lifelike fluorescence. Today, patients’ needs and expectations differ widely. They may include quick healing, but also long-termstabilityorenhancedaesthetics.Theuse of IPS Empress CAD Multi blocks in combination with the CEREC 3 (Sirona) chairside CAD/CAM sys- tem allows restorations to be fabricated that meet theneedsoftoday’spatients.Inthecasepresented, a restoration was fabricated with an IPS Empress CAD Multi block. A highly aesthetic result was achieved that left nothing to be desired. _Case study A 32-year-old female patient presented to my office dissatisfied with the aesthetic appearance of her upper anterior teeth. The incisal edges showed an irregular contour and discolouration was present (Fig. 1). The initial examination re- vealed an inconsistent incisal line and dark dis- colouration visible during smiling. Tooth #12 had previously been restored with a crown, while tooth #22 had received a composite restoration (Fig. 2). Prior to the start of the treatment, a CRT test was conducted. The results indicated a low caries risk level and good oral hygiene. Therefore, the restorative treatment could be started im- mediately. The restorative options available to the patient were discussed with her. Her priorities included the lightening of the discoloured teeth, as well as the creation of softer, more feminine tooth shapes and the creation of long-lasting restorations. CAD/CAM 2_2010 Combination of digital and analogue techniques Author_ Dr Gunpei Koike, Japan Fig. 1_Pre-op situation showing an irregular incisal line. The patient considered her teeth too “angular and big”. Fig. 2_Tooth #12 had been restored with a crown in the past and tooth #21 showed pronounced discolouration. Fig. 3_Preparation for a CAD/CAM- fabricated all-ceramic restoration with rounded angles and transitions. Fig. 2 Fig. 3 Fig. 1