case study _ veneers I rection and were prepared accurately. For indexing, the preparation margin was exposed through minimal invasion using with the diode laser. While preparing the temporaries, it has to be ensured that they support the healing of the gingiva after the excisions through optimal, anatomic convexity. The new outer contours created in the wax-up need to be considered and with the silicon key they may serve as model of the new contour and thickness of the temporaries. With this procedure, excellent healing results can be achieved that create optimal conditions for cementing. Photographs taken from all angles facilitate comparison with the initial situation and significantly aid the technician in creating the veneers. The more extensive and precise the photographs, the more accurately and beautifully the veneers can be prepared. At this point, which technical parameters can be of use in patients with habitual dysfunctions? Fig. 13a Fig. 13b Fig. 13c Fig. 13d Ao+Pressbody was applied followed by multiple layers of Authentic. After the form of the veneers had been modelled, they were pressed and coated. The perfect result was achieved after four firings. The durability of the veneers is a significant advantage of this multiple-layering technique. We were able to fulfil our patient’s aesthetic and functional desires from try-in. The patient was highly enthusiastic and immediately approved of his improved smile. He was given a night guard to prevent possible problems due to bruxism. In our opinion, a night guard should always be used after the completion of reconstructions in habitual dysfunction cases, in order to protect the veneers. _Conclusion Direct comparison of the preoperative and post-operative situations demonstrates the new, stress-free situation in the upper anterior teeth, which is the aim in patients with habitual dysfunction. Accurate planning and careful consideration of the veneer type—prepared or non-prepared—is highly recommended._ For one, the above-mentioned static design data of the veneer length play a significant role. Protrusion and latero-trusion forces can easily be compensated when the sagittal incisor guiding angle is levelled. Optimal function surfaces can be created through fine adjustments. Thus, the result of the treatment is not only a careful alteration of the overbite–overjet relation, but also a fine adjustment of the pathological anterior and lateral guidance. Furthermore, the selection and quality of the veneer ceramic plays a significant role. Ceramics that are more elastic and abrasion resistant should be preferred. In the present case, our team decided to use the following combination: initially _contact cosmetic dentistry Prof Martin Jörgens DentalSpecialists Kaiserswerther Markt 25 40489 Düsseldorf-Kaiserswerth, Germany www.dentalspecialists.de ZTM Olaf van Iperen Siebengebirgsblick 12 53343 Bonn-Wachtberg, Germany www.vaniperen.de cosmetic dentistry 4 _ 2009 I 17