@misc{HornbergerThielVollmann, author = {Hornberger, Helga and Thiel, Norbert and Vollmann, Markus}, title = {Fully ceramic tooth replacement with a frame made of cer-stabilised zircon-oxide}, pages = {8}, abstract = {Vollkeramischer Zahnersatz mit einem Ger{\"u}st, das aus einem Ger{\"u}stmaterial aus einem Cer-stabilisierten Zirkonoxid (Ce-ZrO2) mit einem Anteil von bis zu 25 Gew\% Aluminiumoxid (Al2O3) bezogen auf den Anteil an ZrO2 aufgebaut ist und einem Infiltrationsglasanteil im Ger{\"u}st von 0-40 Vol\% bezogen auf das Volumen des Ger{\"u}sts sowie einer auf das Ger{\"u}stmaterial abgestimmten Verblendkeramik.Die Erfindung betrifft die Verwendung von cer-stabilisiertem ZrO2 zur Herstellung von Ger{\"u}stmaterialien, die als Restauration im Dentalbereich einsetzbar sind.}, language = {en} } @article{ReichHornberger, author = {Reich, Sven and Hornberger, Helga}, title = {The effect of multicolored machinable ceramics on the esthetics of all-ceramic crowns}, series = {Journal of Prosthetic Dentistry}, volume = {88}, journal = {Journal of Prosthetic Dentistry}, number = {1}, pages = {44 -- 49}, abstract = {Statement of problems: Computer-aided design/computer-assisted machining systems offer the possibility of fabricating restorations from one machinable ceramic block. Whether multishaded blocks improve esthetic results and are a viable alternative to individually stained ceramics has not been fully determined. Purpose: The aim of this investigation was to examine the effect of multishaded blocks on the esthetic appearance of all-ceramic CEREC crowns and compare these crowns with single-shade and stained restorations. Material and methods: Ten subjects were included in this study. For each subject, 6 different crowns were milled with the use of a CEREC machine. One crown was milled from each of the following machinable ceramic materials: CEREC Vitablocs Mark II in classic colors; Vitablocs Mark II in 3D-Master colors; Vitablocs Mark II in either classic or 3D-Master colors, with additional staining; Megadenta Bloxx multishaded; Mark II experimental multilayer; and an experimental multilayer leucite ceramic. Three independent examiners assessed the esthetic appearance of crowns fabricated to match each subject's anterior tooth shade. A scale of 1 to 6 was used to score the shade match and esthetic adaptation of each crown, with 1 representing excellent characteristics and 3.5 serving as the threshold for clinical acceptability. The examiners' scores were averaged, and the mean values were analyzed with the Wilcoxon signed rank test (P