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ePaper created 2017-09-11, 09:00:39 | version 1.38.0
Dental Tribune Asia Pacific Edition | 9/2017 TRENDS & APPLICATIONS 11 8a 8b 9 10 12a 12b Figs. 8a & b: Colouration of the zirconium dioxide before sintering.—Fig. 9: The zirconium dioxide frameworks prepared for veneering in the buccal area. —Fig. 10: The ceramic build-up in the anterior region (IPS e.max Ceram).—Fig. 11: Prepared for the second firing. Finely detailed adjustments in the shape and morphology.—Figs. 12 a & b: The finished restorations. The vestibular areas were layered individually. In the occlusal and palatal areas, the framework was designed in full anatomical contour. —Fig. 13: Natural-looking translucency with internal shade effects. AD 11 13 The ceramic materials (IPS e.max Ceram) for veneering the buccal areas: Cervical Transpa orange-pink with Special Incisal yellow 50 % and Transpa neutral 50 % and Power Dentin A2 Power Incisal I for greater brightness at the transition lines Transpa blue 50 % and Opal Effect 1 50 % Transpa orange-grey to create a contrast in the incisal areas Transpa orange-grey with Special Incisal yellow on the incisal edges Transpa neutral Transpa clear 50 % and Opal Effect 1 50 % Power Incisal 2 We designed the tooth shape and the occlusal morphology in full anatomical contour in the CAD software. The buccal surfaces should be built up in ceramic in order to achieve optimum aes- thetics. In preparation for this, the software performed a cut-back. After the framework design, the individual elements were milled from zirconium dioxide (IPS e.max ZirCAD). The material used has interesting mechanical prop- erties, which, among other quali- ties, guarantee the long-term sta- bility of the restorations. The se- lected shade of LT sun offers a light chroma that matched per- fectly the envisaged Shade A res- torations. After milling the frame- works, we corrected the morphol- ogy slightly, paying particular at- tention to the interdental areas. For excellent aesthetic results, we infiltrated the frameworks with the special IPS e.max ZirCAD LT colouring liquids (Ivoclar Vivadent) before sintering. 14 Fig. 14: The all-ceramic restorations looked very natural and vital in the mouth.