KATANA Zirconia STML and UTML, developed by Kuraray Noritake Dental Inc. has overturned the conventional image of zirconia with its translucency, thereby opening the door for a new potential use in dentistry.
STML: Super Translucent Multi-Layered Zirconia Dual multi-layered zirconia with gradiation of color and translucency. The use of a restoration material with a single level of translucence to make anterior or posterior crown restorations can result in a grayih appearance on occasion, due to the effect of the abutment color. In STML, both chroma and translucency are graduated from the incisal to the cervical region, with less translucency in the cervical region to minimize the effect of the abutment color. The chromatic gradiations resemble those in the shade for reproducing the enamel and dentin.